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OST1 92000-90

UDC

Group B63

INDUSTRY STANDARD

Sheets OST1 92000−90

aluminum alloy

grade AMg6

Specifications Replaces OST1 92000−73

OKP 181511

This standard applies to sheets of aluminum alloy grade AMg6, intended for critical parts, including those made by machining, chemical and electrochemical milling.

CONTROL

EXAMPLE


Reg. No. VIFS 8432042 dated 06.12.90.


Developed Approved Date of introduction

VILS MAP 16.10.1990 from 01.01.1991

Validity

before 01.01.1996

(unlim. Wed)

Reg. number Made up Checked Beginning department Ch. engineer
302 247−91 Kandyba Pastushenko Isupov Rodin
05/16/91   05/15/91 05/31/91

Instead of OST1 92000−731 (302.879−83)

BNK: 16.05.91

05/27/91

① (rev. No. 2 8.04.96)


1. CLASSIFICATION

1.1. According to the manufacturing method, the sheets are divided into:

clad with technological cladding — B (AMg6B);

clad with thickened cladding — U (AMg6U).

At the discretion of the manufacturer, it is allowed to produce sheets without technological cladding (without additional marking) — Amg6.

1.2. According to the state of the material, the sheets are divided into:

annealed — M (AMgbBM, AMg6UM, AMg6M);

annealed with increased strength — MPP (AMg6BMPP, AMg6MPP);

cold-worked — N (AMg6BN, AMg6N);

work-hardened with increased strength — NPP (AMg6BNPP, AMg6NPP);

cold-worked with limited strength — NOP (AMg6BNOP, AMg6NOP);

without heat treatment — without additional designation — (AMg6, AMg6B);

without heat treatment with increased strength — PP (AMg6UPP).

2. VARIETY

2.1. Sheets, depending on the state of the material, are made with the dimensions given in table. 1.

2.2. The sheet thickness, width and maximum deviations in thickness (depending on the width) must correspond to those indicated in table. 2.

2.2.1. The theoretical mass (M theor.) Of one meter of a sheet is calculated by the formula:

where: H max. and B max. — the largest limiting dimensions in thickness and width, mm;

H min. and In min. — the smallest limiting dimensions in thickness and width, mm;

is the density of the AMg6 aluminum alloy, 2.64 g / .

The theoretical mass of one meter of fox is given in the obligatory appendix (Tables 1 and 2).

2.3. The thickness of the sheet at any measuring point should not go beyond the permissible deviations.

Permissible thickness variation on annealed sheets (including on annealed with increased strength and on sheets without heat treatment of all thicknesses with a width of up to 2000 mm inclusive, as well as on cold-worked sheets (including on cold-worked sheets with increased and limited strength) of all thicknesses up to 2100 mm inclusively there should be no more than half of the tolerance field The permissible thickness difference on annealed sheets with a width of over 2000 mm should be actual and entered in the certificate.

Table 1

Material condition

sheets

Designation of glory grade, plating and material condition Thickness Width Length
Annealed

AMg6BM,

AMg6M

0.8−10.5

1200, 1400

1500, 1600

1800, 2000

2000 — 7000
mm Continued table. 1

Material condition

sheets

Designation of glory grade, plating and material condition Thickness Width Length
Annealed

AMg6BM,

AMg6M

2.0

2100, 2300

2500, 2700

2900, 3000

2100−3000
2.5

2100, 2300

2500, 2700

2900, 3000

2100−3500
3.0−4.0 2100−5000
4.5−5.5 2100−4000
6.0−10.5 2100−3000
3.9−9.0 3050 3050−4000
AMg6UM 0.5−0.7

1200, 1400

1500, 1600

2000−7000
0.8−5.5

1200, 1400

1500, 1600

1800, 2000

2000−7000
Annealed with increased strength

AMg6BMPP,

AMg6MPP

3.0−10.5

1200, 1400

1500, 1600

1800, 2000

2000−7000
Cold-worked

AMg6BN,

AMg6N

0.8−10.5

1200, 1400

1500, 1600

1800, 2000

2000−7000
4.0−6.6 2100 2000−7000
Hard-worked with increased strength

AMg6BNPP,

AMg6NPP

2.0−10.5

1200, 1400

1500, 1600

1800, 2000

2000−7000
4.0−5.5 2100 4000−7000
Hard-worked with limited strength

AMg6BNOP,

AMg6NOP

3.0−10.5

1200, 1400

1500, 1600

1800, 2000

2000−7000
Without heat treatment

AMg6B,

AMg6

5.0−10.5

1200, 1400

1500, 1600

1800, 2000

2000−7000
No heat treatment with increased strength AMg6UPP 7.0 2000 5000−7000

Note. Sheets with a width of 3000 mm with a thickness of 3.0 to 9.0 mm are allowed to be made with a width of 3000 mm in an amount not exceeding 70% of the order.



table 2

mm

Thickness of sheets Limit deviations in thickness at width
1200 1400

1500,

1600

1800 2000

2100,

2300,

2500

2700,

2900,

3000

2050

0.5

0.6

0.7

0.8

0.9

1.0

1,2

1.5

1.6

1.8

1.9

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

-0.12

-0.12

-0.12

-0.13

-0.13

-0.16

-0.16

-0.22

-0.22

-0.22

-0.22

-0.24

-0.28

-0.33

-0.34

-0.35

-0.35

-0.36

-0.36

-0.41

-0.41

-0.42

-0.42

-0.46

-0.46

-0.47

-0.47

-0.50

-0.50

-0.12

-0.13

-0.13

-0.14

-0.14

-0.17

-0.17

-0.25

-0.25

-0.25

-0.25

-0.26

-0.29

-0.34

-0.35

-0.36

-0.36

-0.37

-0.37

-0.42

-0.42

-0.43

-0.43

-0.47

-0.47

-0.48

-0.48

-0.50

-0.50

-0.13

-0.13

-0.13

-0.14

-0.14

-0.17

-0.17

-0.25

-0.25

-0.23

-0.25

-0.26

-0.29

-0.34

-0.35

-0.36

-0.36

-0.37

-0.37

-0.42

-0.42

-0.43

-0.43

-0.47

-0.47

-0.48

-0.48

-0.50

-0.50

-

-

-

-0.16

-0.16

-0.18

-0.20

-0.26

-0.26

-0.26

-0.26

-0.27

-0.30

-0.35

-0.36

-0.37

-0.37

-0.38

-0.38

-0.43

-0.43

-0.44

-0.44

-0.48

-0.48

-0.49

-0.49

-0.50

-0.50

-

-

-

-0.18

-0.18

-0.20

-0.22

-0.27

-0.27

-0.27

-0.27

-0.28

-0.30

-0.35

-0.36

-0.37

-0.37

-0.38

-0.38

-0.43

-0.43

-0.44

-0.44

-0.48

-0.48

-0.49

-0.49

-0.50

-0.50

-

-

-

-

-

-

-

-

-

-

-

+0.30

+0.31

+0.36

± 0.21

± 0.24

± 0.27

± 0.30

± 0.33

± 0.36

± 0.39

± 0.42

± 0.45

± 0.48

± 0.51

± 0.54

± 0.57

± 0.60

± 0.63

-

-

-

-

-

-

-

-

-

-

-

± 0.30

± 0.30

± 0.30

± 0.21

± 0.24

± 0.27

± 0.30

± 0.33

± 0.36

± 0.39

± 0.42

± 0.45

± 0.48

± 0.51

± 0.54

± 0.57

± 0.60

± 0.63

-

-

-

-

-

-

-

-

-

-

-

-

-

± 0.30

± 0.21

± 0.24

± 0.27

± 0.30

± 0.33

± 0.36

± 0.39

± 0.42

± 0.45

± 0.48

± 0.51

± 0.54

-

-

-

Notes. 1. By agreement of the parties, it is allowed to manufacture sheets with intermediate

dimensions in thickness, with maximum deviations in sheet thickness

for these sizes are accepted as for the nearest smaller size,

specified in table. 2.

2. By agreement with the customer, the maximum deviations of sheets without

heat treatment and annealed with a thickness of 5 mm or more with a width of up to

2000 mm and sheets AMg6UPP set to ± 5% of the nominal thickness.

3. Limit deviations of sheets with a thickness of 10 and 10.5 mm manufactured in

cold-worked and cold-worked with increased strength states, according to

customer’s requirement should be +0.3 mm,

-0.2

2.4. Limit deviations of sheets in width:

+10 mm — for sheets up to 2100 mm wide inclusive with a thickness of 0.5 to 4.5 mm;

+15 mm — for sheets up to 2100 mm wide inclusive with a thickness of 5.0 to 10.5 mm;

+30

-20 mm — for sheets over 2100 to 3050 mm wide.

For cold-worked (including cold-worked with increased and limited strength) sheets, the maximum deviations in width are +60 mm.

2.5. Limit deviations along the length of the sheets:

+25 mm — for sheets up to 2100 mm wide inclusive with a thickness of 0.5 to 3.5 mm;

+30 mm — for sheets up to 2100 mm wide, inclusive, with a thickness of 4.0 to 10.5 mm;

+50 mm — for sheets over 2100 mm wide.

2.6. Sheets with a length of more than 4000 mm and a thickness of more than 4.0 mm in the cold-worked state may be made with a width exceeding the nominal size by no more than 40 mm. (rev. 1)

2.7. Sheets are made measured (of a certain length) or a multiple thereof within the lengths indicated in table. 1, with an interval of 0.5 m.

2.8. Dimensions of sheets, grade of alloy, plating and condition of the material must be specified in the order-order.

Examples of symbols:

Sheet from alloy grade AMg6 with technological cladding (B), annealed (M), thickness

3.0 mm, 2000 mm wide. Length 3000 mm:

Sheet AMg6.B.N 3x2000x3000 OST1 92000−90

The same, without technological cladding:

Sheet AMg6. M 3x2000x3000 OST1 92000−90

The same, with a thickened cladding (U):

Sheet AMg6.U.M 3x2000x3000 OST1 92000−90

Sheet made of alloy grade AMg6 with technological cladding (B), cold-worked with limited strength (NOP), 6.0 mm thick, 1500 mm wide, 4000 mm long:

Sheet AMg6.B.NOP 5x1500x4000 OST1 92000−90

3. TECHNICAL REQUIREMENTS

3.1. Sheets are made in accordance with the requirements of this standard according to the technological instructions, approved in the prescribed manner.

3.1.1. The chemical composition of the AMg6 grade alloy must meet the requirements of GOST 4784.

The maximum permissible hydrogen content in the metal should not exceed 0.4 per 100 g of metal.

3.2. For sheet cladding (including for technological cladding), aluminum is used in purity not lower than grade AD1 in accordance with GOST 4764 (with a copper content of up to 0.02%) or not lower than grade A5 in accordance with GOST 11069.

At the request of the customer, as specified in the order, AMg6UM sheets with a thickness of 0.6 to 1.8 mm and AMg6UPP sheets with a thickness of 7.0 mm are made with cladding of A7 grade aluminum in accordance with GOST 11069.

3.3. The thickness of the technological cladding on each side of the sheet should not exceed 1.5% of the nominal sheet thickness.

The thickness of the thickened cladding on each side of the sheet shall not be less than 4% of the nominal sheet thickness.

AMg6UPP sheets with a thickness of 7.0 mm are made with a thickened cladding of at least 4.5% on each side of the sheet. By agreement between the manufacturer and the customer, it is allowed to produce sheets with a thickened plating of at least 6% on each side.

3.4. The mechanical properties of the sheets must correspond to those indicated in table. 3.

3.5. The sheets should be cut at right angles. The slant of the cut should not bring the sheets beyond the maximum deviations in width and length.

Burrs and delamination are not allowed on the edges of cut sheets; Sheets with a length of more than 4000 mm and a thickness of more than 4.0 mm, made widened, as agreed with the customer, may not be cut along the edges.

A sheet with a width of more than 2100 to 3000 mm inclusive with a thickness of 5.5 to 10.5, as well as sheets of 3050 mm wide with a thickness of 3.0 to 6.0 mm, are made without cutting along the edges.

3.6. Cracks, tears, delamination, saltpeter deposits, corrosive spots and areas exposed from cladding (on sheets with thickened cladding) are not allowed on the surface of the front and opposite front sides of the sheets; on the sheets, stains and stripes from burnt grease, non-metallic exceptions of metallurgical origin (slag inclusions and others) and non-metallic particles adhered to the surface are also not allowed, if they are not removed by control etching in 5−6% NaOH solution at 50 ° C for 1 -3 min. followed by clarification in a 30% solution of HNor according to the mode adopted at the factory.

On annealed sheets with a width of 2100 mm and more, spots and stripes from burnt grease are allowed.

3.7. Rejection signs are not:

a) small sunsets and nadirs (in the form of a metal sunset) with a total area of no more than:

80 for 1 sheet surface up to 2000 mm wide;

100 per 1  — «- -" — St. 2000 to 2500 mm;

400 per 1  — «- -" — St. 2500 mm;

b) nests from sunsets chipping, if their depth does not go beyond half of the maximum deviation in sheet thickness;

c) single and group small scratches with a depth not exceeding half of the maximum deviation in sheet thickness;

d) prints in the form of small dents and bulges, which should not go beyond half of the maximum deviation in sheet thickness;

e) notching and aluminizing with a stroke length of no more than 5 mm, which should not go beyond half of the maximum deviation in sheet thickness;

f) subplate bubbles, as well as areas exposed from cladding without cracks on sheets with technological cladding;

g) single trace of bends (kinks) in annealed sheets with a thickness of 0.5−0.8 mm, a width of 1200 mm or more with a length of more than 4000 mm and a width of 1500 mm or more with a length of up to 4000 mm;

h) fine smooth waviness resulting from vibration during autofrettage, with a distance between the tops of two adjacent waves equal to 200 mm or less, on cold-worked sheets up to 4.0 mm thick should be no more than 0.3 mm deep, and on sheets with a thickness of sv… 4.0 mm — no more than 0.5 mm deep.

At the request of the customer, specified in the order, small smooth waviness resulting from vibration during auto-fretting, with a distance between the tops of two adjacent waves equal to 200 mm or less, on cold-worked sheets with a thickness of St. 0.4 mm should not be more than 0.3 mm deep;

i) crescent shape along the length within the limits of obtaining the nominal compression of the sheet;

g) stains and stripes from the emulsion, if they occupy an area not more than:

3% of the sheet surface up to 2100 mm wide;

5% — «- -" — St. 2100 mm to 2500 mm;

7% — «- -" — St. 2500 mm;

k) sliding lines arising when the sheets are stretched;

l) tarnishing colors;

m) imprints from the rolls in the form of light and dark stripes formed during sheet rolling;

o) slight attrition with a total area of no more than:

2% of the surface of a sheet up to 2100 mm wide;

5% — «- -" — St. 2100 mm to 2500 mm;

7% — «- -" — St. 2500 mm;

n) individual cleaned sections of the surface of sheets with a total area of not more than 0.5% of the surface of a sheet up to 2100 mm wide and a total area of not more than 10% of the surface of a sheet with a width of over 2100 mm to a depth of no more than half of the maximum deviation, and on sheets with a width of St. 2100 to 3050 mm stripping depth is allowed more than half of the maximum deviation; on sheets with a thickened cladding — to a depth of no more than half the thickness of the planned layer.

Cleaning is done with paper-based abrasive paper in accordance with GOST 6546 or with fabric-backed abrasive paper in accordance with GOST 5009 with a grain size not larger than 6 in accordance with GOST 3647 or a set.

3.8. The depth of occurrence of all the permissible defects listed in clause 3.7 should not bring the sheets beyond the minimum permissible sheet thickness.

On sheets without heat treatment and annealed with a width of up to 2000 mm, a thickness of 5 mm or more, having maximum deviations in thickness of ± 5% of the nominal thickness, the depth of occurrence of all defects listed in clause 3.7 should not exceed the tolerance field for the thickness of the sheet and not take the sheet beyond the minimum permissible sheet thickness.

3.9. On the edges of sheets with a thickness of St. 4.0 mm and more than 4000 mm in length, made widened, as well as on allowances in the length and width of all sizes, defects are allowed due to the production method with the possibility of cutting out a rectangular sheet of nominal dimensions with a mark of defects with paint.

On square sheets with a width of 2100 mm and more outside the inscribed circle with a diameter equal to the minimum value of the sheet width, defects of rolling origin are allowed without limiting their characteristics and dimensions, and on rectangular sheets with a width of 2100 mm and above, these defects are allowed in places agreed with the customer …

3.10. The surface of the sheets after clarification at the customer’s site must meet the requirements of clause 3.7 of this standard.

3.11. For 1 sheet surface after removing the cladding, machining, electrochemical and chemical milling, no more than three single point inclusions with a diameter of up to 1.5 mm are allowed.

3.12. Deviation from the plane of sheets of all thicknesses, manufactured in annealed and annealed with increased strength states, as well as sheets with a thickness of 0.8 to 3.4 mm inclusive, manufactured in hard-worked and cold-worked with increased and limited strength states, must comply with the requirements specified in table. 4.

3.13. The deviation of the sheet from the plane of the plate per 1 m of the length of the sheets manufactured in cold-worked and cold-worked with increased and limited strength states, when a force is applied not more than 5 kgf, should not exceed:

8.0 mm — for sheets with a thickness of 3.5 to 7.0 mm;

2.0 «-" «" St. 7.0 «10.5».

3.14. The deviation from the plane of sheets of all thicknesses, manufactured without heat treatment, must meet the requirements specified in table. five.

Table 3

Sheet material condition Alloy grade, plating and material condition Sheet thickness, mm

Ultimate tensile strength σ6 MPa (kgf / )

Yield strength σ 0.2 MPa (kgf / )

Relates. Elongation at = 11.347,%

No less
Annealed

AMg6NM,

AMg6M

From 0.8

up to 10.5

315 (32.0) 155 (16.0) 15.0
AMg6UM

From 0.5

up to 0.7

From 0.8

up to 5.5

255 (26.0)

275 (28.0)

120 (12.0)

130 (13.0)

15.0

15.0

Annealed with increased strength

AMg6BMPP,

AMg6MPP

From 3.0

up to 10.5

355 (34.0) 175 (18.0) 15.0
Hard-worked with increased strength

AMg6BNPP,

AMg6NPP

From 2.0

up to 10.5

410 (42.0) 330 (33.5) 5.5
Cold-worked

AMg6BN,

AMg6N

From 0.8

up to 10.5

375 (38.0) 285 (29.0) 6.0
Hard-worked with limited strength

AMg6BNOP,

AMg6NOP

From 3.0

up to 10.5

375−430

(38.0−44.0)

285−355

(29.0−36.0)

6.0
Without heat treatment

AMg6B,

AMg6

From 5.0

up to 10.5

315 (32.0) 165 (16.0) 15.0
No heat treatment with increased strength AMg6UPP 7.0 315 (32.0) 175 (16.0) 15.0

Table 4

mm

Thickness Width Length Deviation of the sheet (waviness and bulge) from the plane with free laying of the sheet (each side) on the plane of the slab: no more
over the entire surface of the sheet (including long sides) on short sides (including sides up to 300 mm from the corners of the sheet)
0.5 to 1.0

Up to 1200 incl.

St. 1200 to 1600

Up to 4000

fifteen

sixteen

20

thirty

Up to 1200 incl.

St. 1200 to 1600

St. 4000

up to 7000

20

35

25

45

St. 1.0 to 1.5

Up to 1200 incl.

St. 1200 to 1600

Up to 4000

20

25

25

35

Up to 1200 incl.

St. 1200 to 1600

St. 4000

up to 7000

25

thirty

thirty

45

St. 1.5 to 4.0

St. 1.5 to 4.0

Up to 1200 incl.

St. 1200 to 1600

Up to 4000

25

25

thirty

40

Up to 1200 incl.

St. 1200 to 1600

St. 4000

up to 7000

25

thirty

40

45

St. 4.0 to 10.5

Up to 1200 incl.

St. 1200 to 1600

Up to 4000

25

thirty

40

40

Up to 1200 incl.

St. 1200 to 1600

St. 4000

up to 7000

25

thirty

40

45

0.8 to 10.5 St. 1600 to 2000

Up to 4000

St. 4000

up to 7000

35

60

50

55

2.0 to 5.0 St. 2000 to 3050 Up to 5000 60 60

Note. For annealed sheets with a width of 2100 mm and more with a thickness of 5.5 to 10.5

deviation of sheets from the plane with free stacking of the sheet (each

side) on the plane of the plate should not be more than 100 mm.

Table 5

mm

Thickness Width Length Deviation of the sheet (waviness and convexity) from the plane with free laying of the sheet (by each side) on the plane of the slab, no more:
over the entire surface of the sheet (including long sides) on short sides (including long sides up to 300 mm from the corners of the sheet)

From 5.0

Up to 10.5

1200

St. 1200

up to 1600

St. 1600

Ddo 2000

Up to 7000

45

60

60

65

65

75


(Sheets of improved quality made of Amg6 alloy. TU)

4. RULES OF ACCEPTANCE AND TEST METHODS

4.1. The batch must consist of sheets of the same material condition and size. The mass of the party is not limited.

4.2. The chemical analysis of the alloy is carried out from each heat.

4.3. Control of geometric dimensions, surface condition, deviations from the plane are subjected to each sheet.

4.3.1. Measurement of sheet thickness is carried out at a distance of at least 115 mm from the corner and at least 25 mm from the edges of the sheet.

Thickness of sheets is not controlled, but guaranteed by the manufacturer in accordance with the requirements of this standard.

4.3.2. Inspection of the surface of the sheets is carried out without the use of optical instruments.

4.3.3. Deviations of sheets from the plane indicated in table. 4 and 5, are determined by all four edges with measuring the distance from the control plate to the bottom surface of the sheet with a metal ruler in accordance with GOST 427.

Small smooth waviness with a distance between the tops of two adjacent waves equal to 200 mm or less according to clause 3.7 «a» is checked with a curved ruler 200 mm long, and deviation from the plane of the slab by 1 m of length according to clause 3.13 is checked in the following way: the sheet is placed on a control plate, a straightedge with a length of 1 m in accordance with GOST 8026 is applied to it and the maximum distance between the ruler and the sheet is measured using probes or a measuring ruler in accordance with GOST 427.

4.4. To determine the mechanical properties in tension, depending on the state of the material, select the number of sheets in accordance with table. 6, but not less than one sheet from each lot presented for delivery.

For the tensile test, one specimen is cut from each test sheet across the rolling direction.

Table 6

Sheet material condition Designation of grade of alloy, cladding and condition of sheet material The minimum number of tested sheets per batch,%
Annealed AMg6BM, AMg6M ten
AMg6UM 100
Annealed with increased strength

AMg6BMPP,

AMg6MPP

100
Cold-worked AMg6BN, AMg6N 100
Hard-worked with increased strength

AMg6BNPP,

AMg6NPP

100
Hard-worked with limited strength AMg6BNOP, AMg6NOP 100
Without heat treatment AMg6B, AMg6 ten
No heat treatment with increased strength AMg6PP 100

Notes: 1. Sheets AMg6UM with a thickness of 0.5 to 1.8 mm, as well as sheets AMg6BN and AMg6N,

produced by coil rolling, tested in the amount of 10% of the batch.

2. At the request of the customer, protocols of mechanical tests of sheets

sent to the customer together with the accompanying documentation.

3. Roll-by-roll testing of sheet products on samples is allowed.

witnesses, selected from one sheet of each roll, in an amount,

provided by this standard.

4.5. Each strip is tested for hydrogen content in accordance with GOST 21132.1.

The arbitration analysis is carried out in accordance with GOST 21132.1.

4.6. The thickness of the thickened cladding is controlled at the manufacturing plants on each side of the sheet in accordance with GOST 1 90047.

At the request of the customer, the protocols for measuring the thickness of the cladding are sent to the customer together with the accompanying documentation.

4.7. Upon receipt of unsatisfactory results of random tests, at least on one sample, a retest of each sheet is carried out.

In a piecewise test, the indicators of mechanical properties are determined in accordance with the requirements of this standard with the rejection of sheets that have lunge.

In case of obtaining unsatisfactory results of testing the mechanical properties of AMg6UPP sheets with a thickness of 7.0 mm, it is allowed to retest the samples with the plating removed, the mechanical properties of which must correspond to Table. 3.

4.8. Sheets with a thickness of 3.0 to 10.6 mm are subjected to ultrasound control in any state of the material in the amount of 100% of the batch according to the list agreed between the manufacturer and the customer.

Sheets with a thickness of 6.5 to 10.5 mm with a width of St. 2000 mm, prepared in the annealed condition, are not subjected to ultrasound control.

4.9. Ultrasound control is carried out in accordance with GOST 1 92074. At the same time, for sheets with a thickness of 2.0 to 8.0 mm, the flaw detectors are adjusted on a through cylindrical control reflector with a diameter of 1.5 mm, and for sheets with a thickness of 8.5−10.5 mm — on flat-bottom reflector with a diameter of 1.5 mm, drilled to a depth equal to half the thickness of the tested sheet.

Ultrasonic vibrations are inputted perpendicular to the hot rolling direction.

A rejection sign for sheets based on the results of ultrasonic testing is the presence on the defectogram of a registered echo signal from a defect that exceeds the echo signal in amplitude:

for sheets with a thickness of 2.0−8.0 mm — from a through cylindrical control reflector with a diameter of 1.5 mm;

for sheets with a thickness of 8.6−10.5 mm — from a flat-bottomed reflector with a diameter of 1.5 mm, drilled at… half the thickness of the controlled sheet.

The size of the uncontrolled wave along the perimeter of the edges of the sheets — no more than 100 mm.

4.10. Sheets that do not meet the requirements of clauses 3.11 and 4.9 when controlled by the customer are considered metallurgical waste in accordance with MTUR 5−73.

4.11. All other requirements for sheets in terms of test methods must comply with GOST 21631.

4.12. Requirements for sheets in terms of marking, packaging and transportation must comply with GOST 21631.

Sheets with a width of more than 2000 mm are made without colorful marking.

At the request of the customer, copies of the chemical analysis protocols are sent to the customer.

The results of tests for hydrogen content are indicated in the certificate only at the request of the customer.


ATTACHMENT

Mandatory

Table 1

kg

Sheet thickness, mm

Theoretical weight of 1 meter of sheet

(in all states of the material except for work-hardened and work-worked with increased and limited strength)

Sheet width, mm
1200 1400 1500 1600 1800 2000 2100 2300 2500 2700 2900 3000 3050

0.5

0.6

0.7

0.8

0.9

1.0

1,2

1.5

1.6

1.8

1.9

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

1,400

1,718

2.036

2,336

2.656

2.927

3.563

4.422

4,740

5.876

5,694

5,981

7.508

9.019

10,593

12,168

13,759

15,365

16.959

18,473

20,067

21,645

23,239

24,769

26,363

27.941

29,535

31,081

32,675

1,632

1.964

2,355

2.708

3.079

3.394

4.136

5,100

5.471

6,213

6,584

6,936

8,735

10.497

12,333

14,169

16,024

17,892

19,749

21,514

23.372

25,212

27,070

28,853

30,711

32,550

34,400

36,229

38,087

1,728

2.126

2,523

2,900

3.296

3.635

4,430

5.463

5.860

6,655

7,052

7.430

9,357

11,244

13,211

15,178

17,164

19,163

21,153

23.043

25.033

27,003

28,993

30.903

32,693

34,863

36,853

38,803

40,793

1,843

2,267

2.691

3.093

3.517

3.877

4.724

5.826

6,250

7,097

7,521

7,924

9.979

11,991

14.089

16,186

18.305

20,434

22,556

24,572

26,694

28,794

30.916

32,953

35,075

37,176

39,298

41,377

43,499

-

-

-

3.431

3.907

4,336

5.242

6.528

7,005

7,958

8,434

8,887

11,196

13,462

15,820

18,179

20,562

22.952

25,338

27,605

29,991

32,353

34,739

37.029

39,415

41,777

44,163

46,525

48,911

-

-

-

3.758

4,287

4.764

5,770

7.225

7,755

8,813

9,342

9,845

12.439

14.953

17,573

20,194

22,840

25,492

28,142

30.659

33,309

35,933

38,583

41,126

46,776

46,400

49,050

51,673

54,323

-

-

-

-

-

-

-

-

-

-

-

11,948

14,754

17,672

19,450

22,229

25,007

27,819

30,601

33,383

36,165

38,947

41,729

44,510

47.292

50,074

52,856

55,638

58,420

-

-

-

-

-

-

-

-

-

-

-

13,063

16,156

19,351

21,298

24,341

27,383

30,426

33,489

36,511

39,584

42,596

45,539

48,682

51,724

54,767

57,809

60,852

63,895

-

-

-

-

-

-

-

-

-

-

-

14,218

17,558

21,030

23,146

26,453

29,759

33,066

36,373

39,679

42,986

46,292

49.699

52,906

56,212

59,519

62.625

66,132

69,439

-

-

-

-

-

-

-

-

-

-

-

14,282

17,853

21,424

24,994

28,565

32,135

35,706

39,277

42,847

46,418

49.988

53,559

57,130

60,700

64,271

67,841

71.412

74,883

-

-

-

-

-

-

-

-

-

-

-

15,338

19,173

23,008

26,842

30,677

34,511

38,346

42.181

46.015

49,850

53,684

57,519

61,354

65,188

69,023

72,857

76,692

80,527

-

-

-

-

-

-

-

-

-

-

-

15,866

19,833

23,800

27,766

31,733

35,699

39,666

43.633

47,599

51,568

55,532

59,499

63,466

67,432

71,399

75,365

79,332

83,299

-

-

-

-

-

-

-

-

-

-

-

-

-

25,196

28,228

32,261

36,293

40,326

44.359

48,391

-

-

-

-

-

-

-

-

-


ATTACHMENT

Mandatory

table 2

kg

Sheet thickness, mm

Theoretical weight of 1 meter of sheet

(cold-worked and cold-worked with increased and limited strength)

Sheet width, mm
1200 1400 1500 1600 1800 2000 2100

0.5

0.9

1.0

1,2

1.5

1.6

1.8

1.9

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

2,387

2,711

2.987

3.637

4.514

4.838

5.488

5.812

6.105

7,663

9.206

10.813

12.421

14.044

15,652

17,275

18,818

20,441

22.048

23.672

25,231

26,854

28,462

30.085

31,660

33,284

2.756

3.133

3.454

4.209

5.191

5.588

6.323

6,701

7,060

8,831

10,684

12,553

14,421

16.309

18,178

20.065

21,858

23,746

25.615

27,502

29,314

31.202

33,071

34.958

36,808

38,696

2.949

3.353

3.696

4.504

5.554

5,958

6,766

7,170

7,553

9,512

11,431

13,430

15,430

17,449

19,449

21,468

23,387

25.407

27.406

29,426

31,364

33,384

35,383

37.403

39,382

41.402

3.141

3.572

3.937

4.798

5.917

6.347

7.208

7,638

8,047

10,134

12,178

14.308

16,438

18,590

20,720

22,872

24.916

27,067

29,197

31,349

33,414

35,566

37,696

39,848

41,956

44,106

3.478

3.962

4.396

5.314

6.619

7.102

8,068

8,551

9.010

11,353

13,648

16,040

18,431

20,847

23,238

25,654

27.948

30,364

32,756

35,171

37.490

39,906

42,297

44,713

47,104

49,520

3.805

4,311

4.823

6,842

7.315

7,851

8,923

9,459

9,968

12,594

15,139

17,793

20,445

23.125

25,778

28,457

31,003

33,683

36,335

39.015

41,587

44,267

46.920

49,599

52,252

54,932

-

-

-

-

-

-

-

-

12,090

14,930

17,882

19,681

22,493

25,304

28,116

30,928

33,739

36,551

39,362

42,174

44,986

47,797

50,609

53,420

56,232

59,044


INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the All-Union Institute of Light Alloys

2. APPROVED AND PUT INTO EFFECT by the Order of the Main Department for the Development of Science and

production of special metallurgy from 16.10.1990

3. REPLACE OST1 92000−73

4. REFERENCE REGULATORY AND TECHNICAL DOCUMENTATION

Designation of the NTD referenced Item number, sub-item

GOST 427−75

GOST 4784−74

GOST 8026−75

GOST 11069−74

GOST 21132.1−81

GOST 21631−758

OST1 90047−72

OST1 92074−78

MTUR5−73

4.3.3

3.1.1.3.2

4.3.3

3.2

4.5

4.11, 4.12

4.6

4.9

4.10


Group B53

INDUSTRY STANDARD

SUPERIOR QUALITY ALUMINUM SHEETS Change No. 1

ALLOY BRAND AMg6 OST1 92000−90

TECHNICAL CONDITIONS

ONP 181511

Clause 2.2. Tab. 2. Note 2 shall be stated in a new edition:

«2. Maximum deviations of sheets without heat treatment and annealed with a thickness of 5 mm and more with a width of up to 2100 mm and sheets AMg6UPP are set ± 5% of the nominal thickness.

Clause 2.6 shall be deleted.

Clause 3.7 p) (first paragraph) shall be revised:

«P) individual cleaned sections of the surface of sheets with a total area of not more than 0.5% of the surface of a sheet with a width of up to 2100 mm to a depth of no more than half of the maximum deviation in thickness on sheets without cladding or with technological cladding and to a depth of no more than half of the thickness of the planning layer on sheets with a thickened cladding, as well as a total area of not more than 10% of the surface of a sheet with a width of 2100 mm and more to a depth within the maximum deviation in thickness on sheets without cladding or with technological cladding. «

Clause 3.8. The second paragraph shall be supplemented with the words: «and annealed sheets with a width of over 2000 mm and a thickness of 2 mm or more (after the words» from the nominal thickness «).

Clause 3.9. The second paragraph shall be supplemented with the words: «and of metallurgical origin, including those detected by ultrasonic testing» (after the words «rolling origin»).

Reg. No. 843204/06 dated 19.12.91

DEVELOPED

VILS

APPROVED BY

GU RNPSM

01.11.91 g.

Introduction period

from 01.03.92


Amendment No. 1 OST1 92000−90 С.2

Clause 3.13 shall be reworded:

«3.13. Deviation of 1 m of the length of the sheet from the plane of the board, with one laying of the sheet on the plate, for sheets manufactured in cold-worked and cold-worked with increased and limited strength states should not exceed

30 mm for sheets with a thickness of 3.5 to 7.0 m;

25 «" — «over 7.0» 10.5 «

Clause 4.4. Table 6 Note 1 shall be stated in a new edition:

«1. Sheets AMg6UM with a thickness of 0.5 to 1.8 mm, as well as sheets AMg6BN, AMg6N, AMg6NPP, AMg6BNOP, AMg6NOP manufactured… rolled, are tested in an amount of 10% of the batch «.

Clause 4.10 shall be amended as follows:

«4.10. Sheets that do not meet the requirements of paragraphs. 3.11 and 4.9, under control at the customer and having defects of metallurgical origin, are technological waste, are returned to the manufacturer without any complaints or penalties and must be replaced without invoicing. «

Application. Required. Table 1. The column «Sheet width, mm 3050» should be supplemented with mass indicators for thicknesses: 6.5; 7.0; 7.5; 8.0; 8.5; 9.0, respectively: 52.424; 56,455; 60,488; 64,520; 68,552; 72,585;

tab. 2. Column «2100» shall exclude the indicators of the mass of sheets with a thickness: from 2.0 to 2.5 inclusive. from 7.0 to 10.5 mm inclusive;

supplement with table 3:


Amendment No. 1 OST1 92000−90 С.3

Table 3

Sheet thickness, mm Theoretical weight of 1 meter of sheet (in the annealed state, without heat treatment and without heat treatment with increased strength of the material state)
Sheet width, mm
1200 1400 1500 1600 1800 2000

5.0

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

15.939

17,533

19,127

20,721

22,315

22,910

25,502

27,100

28,690

30,284

31,878

33,472

18,579

20,437

22,295

24,153

26.011

27,868

29,726

31,584

33,442

35,300

37,158

39,016

19,899

21.889

23,879

25,869

27,858

29,848

31,838

33,828

35,818

37,808

39,798

41,788

21,219

23,341

25,463

27,585

29,707

31,828

33,950

36,072

38,194

40,316

42,438

44,560

23,859

26,245

28.631

31.017

33.403

35,788

38,174

40,560

42,946

45,332

47,718

50,104

26,499

29,149

31,799

34,449

37.099

39,748

42,398

45.048

47,698

50,348

52,998

55,648


OKP 18 1511

Group B 53

INDUSTRY STANDARD

SUPERIOR SHEETS CHANGE No. 2

FROM ALUMINUM ALLOY OF OST1 92000−90

AMg6.TECHNICAL CONDITIONS

Remove the expiration date.

Reg. No. VIFS 8432042/02 dated 09/26/95.

DEVELOPED APPROVED Introduction deadline

VILS GU special metallurgy from 01.10.95

RF Committee on

metallurgy