By visiting this site, you accept the use of cookies. More about our cookie policy.
Will call in 30 seconds. Free.

TU 14-4-70-72

MINISTRY OF FERROUS METALLURGY OF THE USSR

UDC 669.15−194−426−272.43
Group B73


ALLOY STEEL SPRING WIRE
TECHNICAL CONDITIONS
TU 14−4-70−72

Introduction term: 03/15/72 For up to: permanently



Audr 3552−82
Committee of standards
measuring instruments
USSR Council of Ministers
Registered «27» .06.78
According to the book of accounting for number 89 996


1972


These technical specifications apply to wire made of steel grades 50HFA-Sh and 662S2VA-Sh, smelted by the method of electroslag remelting. The wire is designed for cold winding springs.

1. CLASSIFICATION AND VARIETY

1.1. Classification and assortment of wire according to GOST 14963−69 with the following clarifications indicated in Table 1.

Table 1

steel grade Surface finishing group Wire diameter, mm Accuracy class Length
50HFA-Sh A B C D 3.0−12.0 GT4 In bars no more than 4 m
65S2VA-Sh IN 3.0−12.0 GT4 In bars, length according to GOST 14955−69
  D 3.0−12.0 GT4 In bars no more than 5 m
50HFA-Sh
65S2VA-Sh
H 0.5−12.0 GT4 In skeins


NOTES:

  • The group of surface finishing and the length of the rods within the limits specified in the table. 1 is specified in the order.
  • At the request of the customer, wire of group H with a diameter of 1.0 mm and more is supplied in coils of at least 10 kg.

2. TECHNICAL REQUIREMENTS

2.1. According to the technical requirements, the wire must comply with GOST 14963−69 with the following clarifications and additions indicated below.

2.2. The chemical composition of steel, with the exception of sulfur and phosphorus, must comply with:

  • for grade 50HFA-Sh — GOST 14963−69
  • for brand 65S2VA-Sh — GOST 14959−69
  • respectively as for the brand 50HFA and 65S2VA.

The content of sulfur and phosphorus should be no more than: sulfur — 0.015%, phosphorus 0.025%.

2.3. For wire with surface finish of group H with a diameter of 3.0 mm or less, the following additional requirements are established:

  • the total depth of one-sided decarburization should not exceed 1.5% of the diameter;
  • the ultimate tensile strength in the state of delivery of wire made of steel grade 65S2VA-Sh should not exceed 120 kgf / mm 2 ;
  • the depth of occurrence of permissible defects should not exceed half of the maximum deviation in diameter.

2.4. The depth of occurrence of permissible defects for wire with surface finish of group H with a diameter exceeding 3.0 mm should not exceed the maximum deviation in diameter.

2.5. The depth of occurrence of permissible defects (clauses 2.3, 2.4) is calculated from the actual diameter of the wire.


3. TEST METHODS, LABELING, PACKAGING, TRANSPORTATION AND STORAGE

3.1. Test methods, marking, packaging, transportation and storage must comply with GOST 14963−69 with the following additions and clarifications:

  • winding test of wire of surface finish group H with a diameter of 3.0 mm and not less is performed on a rod with a diameter equal to twice the diameter of the test specimen;
  • in the state of delivery, a wire with a diameter of 6.0 mm and more is tested for hardness, and a wire with a diameter of less than 6.0 mm is tested for ultimate tensile strength;
  • wire material is designated: 50KhFA-Sh, 65S2VA-Sh.



Head laboratory of standardization I. Baryshev


The specified technical conditions were developed with the participation of:

Representatives from:

enterprises PO Box R-6209 — / Selyavo. A.L. /
enterprises PO Box A-1122 — / Akinshin A.V. /
enterprises PO Box B-2394 — / Gubarkov Yu.D. /
enterprises PO Box M-5603 — / Kudinov V.F. /
from the enterprise PO Box A-1950
Chief technologist — / Kireev B.A. /
Head of the Bureau of Standards — / Kukushkina E.V. /
Deputy shop manager 19 — / Lyubshin D.I. /



Copy is right


Appendix to TU

PAYMENT
wholesale prices for spring wire
grades 65S2VA-Sh and 50HFA-Sh

The wire is priced at the prices of 50HFA and 62S2Va wire in accordance with GOST 14963−69 (add. No. 18 to the price list 01−05) with additional surcharges to the wholesale price:

  • for increasing the requirements for the surface quality of the wire of the surface finishing group — Н 2%;
  • for additional requirements for the depth of the decarburized layer for wire 3 mm in size and below, group H — 2%
  • for ESR for steel grade 65S2VA — 309 rubles. for 1 ton; for steel grade 50XFA — 255 rubles. per 1 ton (price list No. 01−01 p. 408−409 and addition No. 20 to the price list 01−03 p. 13).


Copy is right
from customer


MINISTRY OF FERROUS METALLURGY OF THE USSR
NIIMETIZ

the USSR
Ministry
ferrous metallurgy
SOYUZMETIZ
Research
Institute of Hardware Products
NIIMETIZ

«24″. 03.1976
No. OT-2306
Magnitogorsk, 15 p / e.

Chelyabinsk region

Head of VIFS
Comrade Makarchuk I.N.
103001, Moscow, per. Shchusev, 4



AMENDMENT LETTER
to specifications TU 14−4-70−72
„Alloy steel spring wire“

The price calculation application has been revised.

Reason: Entry into force from 01.01.1976 price list No. 01−05 edition 1975, part 2.

Appendix: Calculation of wholesale prices on 7 sheets.


Head department of standardization I.V. Barysheva

Noted
22 / 04.76 g.


Appendix to TU 14−4-70−72

Calculation of wholesale prices for spring wire 50HFA-Sh, 65S2VA-Sh
groups A, B, C, D, H, accuracy GT4, according to TU 14−4-70−72.

The calculation was made on the basis of clause 13 of the „General instructions“ to the price list No. 01−05−1975, part 2.

1. Analog: wire in accordance with GOST 14963−69; 50KHFA, 65S2VA, groups D-1U and V-GT4.

(for group H — price list No. 01−05−1975, part 2, page 37, table 1.52)
(for groups A-G — price list No. 01−02−1974, part 1, page 114).

2. A list of differences in the quality requirements of wire according to TU 14−4-70−72 from the analogue, which are the basis for calculating surcharges and discounts:


No. PP TU List of differences Surcharge, discount (+) (-) Justification of surcharges (discounts)
Price List No. P.
2.2. Electroslag alloy steel is used: 50 KhFA-Sh, 65S2VA-Sh Tsm 01−02. Part 1 184
 

Lowered content limits

sulfur by 0.015% (analogue 0.03%, TU-0.015%),

phosphorus by 0.005% (analogue 0.03%, TU — 0.025%)

To the price of section steel or wire rod

five

1

174

»

For wire of group «N»
2.3. 1.5% decarburized layer guarantee 2 « 182
3.1.a Coiling test is mandatory 3 01−05. Part 2 64
For wire group
  A-1U fifteen 01−02. Part 1 113
  B-1U ten « «
  B-1U five « «
  G-1U 2 « «
  D-1 base    


Total:

3. Calculation of wholesale prices for wire

Tsn = (Tsb ± Tsm x Ku) x (1 ± ) ± Pr

For brand 50HFA-Sh


Group A-1U
The price of 1 ton of section steel 50HFA dia. 5 mm — 206 rubles (Project 01−02, Part 1, page 40).
Surcharge for narrowing the limits of sulfur and phosphorus content 6% or 206 x 0.05 = 12 rubles.
The total price of section steel is 206 + 12 = 218 rubles.
Surcharge for remelting «W» (32% + 140 rubles; pr. 01−02. Part 1, p. 184)
P = 218 x 0.32 +140 = 210 rubles. — for diameters 3.0−4.8 mm.
For other wire diameters, the calculation is similar.

Group H
The price of 1 ton of wire rod 50HFA is 171 rubles. (Project 01−02. Ch1, add. 5).
Surcharge for narrowing the limits of sulfur and phosphorus content 6% or 171 x 0.06% = 10 rubles.
Surcharge for remelting «W» for dia. 4.0 mm (171 + 10) x 0.32 + 140 = 198 rubles.
The amount of surcharges P = 10 + 198 = 208 rubles.
P x Ku = 208 x 1.16 = 241 rubles.
Ku = 1.16 (pr. 0−1.-5. Part 1, p. 64).

For brand 65S2VA-Sh

Group A-1U
The price of 1 ton of section steel 65S2VA diam. 5 mm — 285 rubles. (Project 01−02, part 1, page 58)
Surcharge for narrowing the limits of sulfur and phosphorus content 6% or 285 x 0.06 = 17 rubles.
Total price of section steel 285 + 17 = 302 rubles.
Surcharge for remelting «W» (32% + 140 rubles)
P = 302 x 0.32 +140 = 237 rubles. — for diameters 3.0−4.8 mm.
P x Ku = 237 x 1.16 = 275 rubles. — (for group H).
For other wire diameters, the calculation is similar.

Group H
The price of 1 ton of wire rod 65S2VA is 244 rubles.
Surcharge for narrowing the limits of sulfur and phosphorus content 6% or 244 x 0.06 = 15 rubles.
Surcharge for remelting «W» for dia. 4.0 (244 + 15) x 0.32 + 140 = 233 rubles.
The amount of surcharges P = 15 + 223 = 238 rubles.
P x Ku = 238 x 1.16 = 276 rubles.


Table

Calculation of wholesale prices for wire according to TU 14−4-70−72


Diameter, mm Base price, CB Ks Tsm x Ku x Ks

Ts ± Tsm x Ku x Ks

gr. D-1U

Surcharge (discount) (+) (-)

Price in rub. for 1 t.

Tsn

Price in rub. per 1 ton with rounding

Tsn

% rub.
1 2 3 4 five 6 7 eight nine
  Diam.
grade.
become
  Wire 50HFA-Sh      
Group A
3.0 5.0 206 + 800   12 + 210 1228 fifteen 184 1412 1410
3.2−3.5 «206 + 675   12 + 210 1103 « 165 1268 1270
3.8 «206 + 612   12 + 210 1040 « 156 1196 1200
4.0−4.5 «206 + 549   12 + 210 977 « 146 1126 1120
4.8 «206 + 531   12 + 210 959 « 144 1103 1100
5.0−5.5 5.5 197 + 513   12 + 207 929 « 139 1068 1070
6.0−6.5 6.0 188 + 495   11 + 204 898 « 135 1033 1030
7.0−7.5 7.0 175 + 468   11 + 203 867 « 130 997 997
8.0−8.5 9.0 177 + 441   11 + 200 829 « 124 953 953
9.0−9.5 «177 + 423   11 + 200 811 « 122 933 933
10−0-10.5 10.0 174 + 387   10 + 199 770 « 116 866 886
11.0−11.5 11.0 171 + 360   10 + 198 739 « 111 850 850
12.0 12.0 169 + 324   10 + 197 700 « 105 805 805
Group B
3.0 1228       ten 1233 1351 1350
3.2−3.5 1103       « 110 1213 1210
3.8 1040       « 104 1144 1140
4.0−4.5 977       « 98 1075 1080
4.8 959       « 96 1055 1060
5.0−5.5 929       « 93 1022 1020
6.0−6.5 898       « 90 988 988
7.0−7.5 867       « 87 954 954
8.0−8.5 829       « 83 912 912
9.0−9.5 811       « 81 892 892
10−0-10.5 770       « 77 847 847
11.0−11.5 739       « 74 813 813
12.0 700       « 70 770 770



continuation

1 2 3 4 five 6 7 eight nine
Group B
3.0 1228 five 61 1289 1290
  3.2−3.5 1103 « 55 1158 1160
  3.8 1040 « 52 1092 1090
  4.0−4.5 977 « 49 1026 1030
  4.8 959 « 48 1007 1010
  5.0−5.5 929 « 46 975 975
  6.0−6.5 898 « 45 943 943
  7.0−7.5 867 « 43 910 910
  8.0−8.5 829 « 41 870 870
  9.0−9.5 811 « 41 852 852
  10−0-10.5 770 « 39 809 809
  11.0−11.5 739 « 37 776 776
  12.0 700 « 35 735 735
  Group D
  3.0 1228 2 25 1253 1250
  3.2−3.5 1103 « 22 1125 1130
  3.8 1040 « 21 1061 1060
  4.0−4.5 977 « 20 997 997
  4.8 959 « nineteen 978 978
  5.0−5.5 929 « nineteen 948 948
  6.0−6.5 898 « 18 916 916
  7.0−7.5 867 « 17 884 884
  8.0−8.5 829 « 17 946 846
  9.0−9.5 811 « sixteen 827 827
  10−0-10.5 770 « fifteen 785 785
  11.0−11.5 739 « fifteen 754 754
  12.0 700 « fourteen 714 714
  Group H
  0.50 1240 3.68 887 2127 five 106 2233 2230
  0.55 1150 3.41 822 1972 « 99 2071 2070
  0.60 1050 3.12 753 1803 « 90 1893 1890
  0.63 994 2.95 711 1705 « 85 1790 1790
  0.70 908 2.69 648 1556 « 78 1634 1630



continuation

1 2 3 4 five 6 7 eight nine
0.80 811 2.41 581 1392 five 70 1462 1460
0.90 735 2.8 525 1260 « 63 1323 1320
  1.0 680 2.02 487 1167 « 58 1225 1230
  1.1 624 1.85 446 1070 « 54 1124 1120
  1,2 591 1.75 422 1013 « 51 1064 1060
  1.4 547 1.62 390 937 « 47 984 984
  1.6 503 1.49 359 862 « 43 905 905
  1.8 471 1.40 337 808 « 40 848 848
  2.0 448 1.33 321 769 « 38 807 807
  2.2 426 1.26 304 730 « 37 767 767
  2.5 404 1.20 289 693 « 35 728 728
  2.8 382 1.13 272 654 « 33 687 687
  3.0 371 1.10 265 636 « 32 668 668
  3.2 366 1.09 263 629 « 31 660 660
  3.5 355 1.05 253 608 « thirty 638 638
  3.8 344 1.02 246 590 « thirty 620 620
  4.0−12.0 337 1.05 241 578 « 29 607 607


  Diam.
grade.
become
  Wire 65S2VA-Sh      
Group B
3.0 5.0 285 + 800   17 + 237 1339 five 67 1406 1410
3.2−3.5 «285 + 675   17 + 237 1214 « 61 1275 1280
3.8 «285 + 612   17 + 237 1151 « 58 1209 1210
4.0−4.5 «285 + 549   17 + 237 1088 « 54 1142 1140
4.8 «285 + 531   17 + 237 1070 « 54 1124 1120
5.0−5.5 5.5 276 + 513   17 + 234 1040 « 52 10192 1090
6.0−6.5 6.0 267 + 495   16 + 231 1009 « 50 1059 1060
7.0−7.5 7.0 264 + 468   16 + 230 978 « 49 1027 1030
8.0−8.5 9.0 256 + 441   15 + 227 939 « 47 986 986
9.0−9.5 «256 + 423   15 + 227 921 « 46 967 967
10−0-10.5 10.0 253 + 387   15 + 226 881 « 44 925 925
11.0−11.5 11.0 250 + 360   15 + 225 850 « 43 893 893
12.0 12.0 248 + 324   15 + 224 811 « 41 852 852



continuation

1 2 3 4 five 6 7 eight nine
Group D
3.0 1339 2 27 1366 1370
  3.2−3.5 1214 « 24 1238 1240
  3.8 1151 « 23 1174 1170
  4.0−4.5 1088 « 22 1110 1110
  4.8 1070 « 21 1091 1090
  5.0−5.5 1040 « 21 1061 1060
  6.0−6.5 1009 « 20 1029 1030
  7.0−7.5 978 « 20 998 998
  8.0−8.5 939 « nineteen 958 958
  9.0−9.5 921 « 18 939 939
  10−0-10.5 881 « 18 899 899
  11.0−11.5 850 « 17 867 867
  12.0 811 « sixteen 827 827
  Group H
  0.50 1330 3.16 872 2202 five 110 2315 2310
  0.55 1240 2.95 814 2054 « 109 2157 2160
  0.60 1140 2.71 748 1888 « 94 1982 1980
  0.63 1090 2.59 715 1805 « 90 1895 1900
  0.70 998 2.37 654 1652 « 86 1735 1740
  0.80 900 2.14 591 1491 « 75 1566 1570
  0.90 824 1.96 541 1365 « 68 1433 1430
  1.0 769 1.83 505 1278 « 64 1338 1340
  1.1 712 1.69 466 1178 « 59 1237 1240
  1,2 679 1.61 444 1123 « 56 1179 1180
  1.4 634 1.511 417 1051 « 53 1104 1100
  1.6 590 1.40 386 976 « 49 995 1030
  1.8 557 1.32 364 921 « 46 967 967
  2.0 534 1.27 351 885 « 44 929 929
  2.2 512 1.22 337 849 « 42 891 891
  2.5 489 1.16 320 809 « 40 849 849
  2.8 467 1.11 306 773 « 39 812 812
  3.0 455 1.08 298 753 « 38 791 791
  3.2 450 1.07 295 745 « 37 782 782
  3.5 439 1.04 287 726 « 36 762 762



continuation

1 2 3 4 five 6 7 eight nine
3.8 428 1.02 282 710 five 36 749 743
4.0−12 421 1.0 276 697 « 35 732 732


Note. Wire according to TU 14−4-70−72 is subject to «General instructions» to price list No. 01−05−1975, part 2.


APPROVED BY

with the manufacturer

20.10.80 g.

AGREED

with the base organization
standardization

17.11.80 g.

with the customer

04.09.80 g.

Right:

04/08/81

UDC

Group B73

USSR Ministry of Standards
Registered and entered in the register
state registration
81.05.13. No. 215333


STEEL WIRE
ALLOY SPRING

TECHNICAL CONDITIONS
TU 14−4-70−72

Notice 2

The term of introduction is from 01.06.81.

1. In the introductory part, the designation of the brand «50XFA-Sh» shall be replaced by «51XFA-Sh».

2. To make the following changes in paragraph 1.1:

  • — in table 1, in the column «Steel grade» in two cases, the brand «50XFA-Sh» shall be replaced by «51XFA-Sh»;
  • — in the column «Surface finishing group» in the second line, add the group «B»;
  • — change the name of the column «Accuracy class» to «Manufacturing accuracy» and put the word «normal» in all lines of the column;
  • — the column «Length» shall be excluded;
  • — Note 1. Delete the words «and the length of the rods (within the limits specified in Table 1);
  • — note 2 to table. 1 shall be stated in the wording: «At the request of the customer, wire of group H with diameters of 1.0 mm and more is supplied in coils weighing at least 10 kg. It is allowed to supply wire in coils weighing in accordance with GOST 14963−78 in an amount not exceeding 10% of the batch weight. «

3. Clause 2.2 shall be stated in the wording:

  • «The chemical composition of steel, with the exception of sulfur and phosphorus, must comply with GOST 14959−79. The sulfur content should be no more than 0.015%, the phosphorus content — no more than 0.025%.

4. Clause 3.1, sub-clause «b» shall be deleted; in subparagraph «c» steel grade 50HFA-Sh shall be replaced by 51HFA-Sh.

5. To supplement the technical conditions with the note «Prices are indicated in Appendix 2».

6. In clauses 1.1; 2.1; 3.1 replace references from GOST 14963−69 to GOST 14963−78.

7. On the title page of the TU in the left part of field 2, put the OKP code 12 2100.

Registered
March 2, 1981

Head department of standardization
and the quality of Research Institute of Metiz I. V. Barysheva

TU 14−4-70−72
with notice No. 2

Appendix 2
Mandatory

Wholesale prices for steel wire
alloy spring

Alloy steel spring wire, surface finish G

Range and technical

requirements of TU 14−4-70−72
with notice No. 2

Diameter, mm Wholesale price in rubles per ton of wire
and steel grades
51HFA-Sh 65S2VA-Sh
1.00−1.10 6680 6500
1.20−1.25 5240 5120
1.40−1.60 3680 3600
1.80- 2710 2690
2.00 2320 2470
2.20 2000 2010
2.50 1690 1740
2.80−3.00 1460 1530
3.20−3.50 1290 1360
3.80 1220 1270
4.00−4.50 1110 180
4.80 1090 1160
5.00−5.50 1010 1120
5.60 980 1090
6.00−6.30 968 1080
7.00−7.50 927 1040
8.00−8.50 883 987
9.00−9.50 852 962
10.0 798 907
11.0−11.50 756 864
12.00−12.50 703 811
13.0 674 797
14.0 645 754


For wire of other groups of surface finishing, wholesale prices are estimated based on the wholesale price of wire of surface group D of the same size and grade with surcharges,%

Surface finishing group Surcharges,%
AND sixteen
B ten
IN five
D base



Alloy steel spring wire, surface finish H

Range and technical

requirements of TU 14−4-70−72
with notice No. 2

Diameter, mm Wholesale price in rubles per ton of wire
and steel grades
51HFA-Sh 65S2VA-Sh
0.50 2320 2380
0.56 2110 2190
0.60 1960 2040
0.63 1860 1950
0.71 1690 1780
0.80 1520 1610
0.90 1370 1480
1.00 1270 1380
1.10 1170 1280
1.20 1110 1220
1.25 1080 1190
1.30 1060 1170
1.40 1020 1140
1.50 982 1100
1.60 941 1060
1.80 881 999
2.00 838 957
2.20 797 918
2.50 756 877
2.80 715 837
3.00 694 816
3.20 685 807
3.50 664 787
3.80 644 768
4.00−14.00 630 755


Note: for steel alloy spring wire in accordance with TU 14−4-70−72 with notice No. 2 «General instructions» apply to the price list No. 01−05−1975, part 2


Head price laboratory 02/27/88
VNIImetiza V.A. Serkin


Approved

with the manufacturer

April 26, 1982

Designed by

with the base organization
standardization

March 23, 1982

Agreed

with the customer

April 15, 1982

Right:

UDC

Group B73


STEEL WIRE
ALLOY SPRING

TECHNICAL CONDITIONS
TU 14−4-70−72

Change 3

The term of introduction is from 01.06.81.

1. The term of validity of the technical conditions has been extended to 01.07.87.

2. In paragraph 2.3, subparagraph b) shall be stated in the wording:

«B) the ultimate tensile strength in the state of delivery of wire made of steel grade 65S2VA-Sh should not exceed 1180 n / mm2 (120 kgf / mm2)».


STATE COMMITTEE
USSR STANDARDS
Registered and entered in the register
state registration
82.06.11 No. 89996/03

Registered
base organization

on standardization
May 4, 1982