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GOST 18905-73

GOST 19746-2015 GOST 25474-2015 GOST 25475-2015 GOST 19739-2015 GOST 24353-2014 GOST 24552-2014 GOST 24718-2014 GOST 18389-2014 GOST 18390-2014 GOST 7222-2014 GOST 7221-2014 GOST 21007-2014 GOST P 55084-2012 STATE STANDARD P 54151-2010 STATE STANDARD P 54152-2010 GOST 19671-91 GOST 2205-2016 GOST 1762.3-71 GOST 1762.2-71 GOST 18903-73 GOST 1762.6-71 GOST 1762.0-71 GOST 6563-75 GOST 22663-77 GOST 27266-87 GOST 1525-91 GOST 1762.4-71 GOST 1762.1-71 GOST 1762.7-71 GOST 1762.5-71 GOST 7222-75 GOST 18905-73 GOST 18389-73 GOST 19351-2006 GOST 10821-2007 GOST 21007-75 GOST 25442-82 GOST 26469-85

GOST 18905−73 molybdenum Wire. Assortment (with Amendments No. 1, 2)

GOST 18905−73

Group В74

INTERSTATE STANDARD

MOLYBDENUM WIRE

Assortment

Molibdenum wire. Assortment

ISS 77.150.99
GST 18 5290

Date of introduction 1976−01−01

The decision of the State standards Committee of the USSR Council of Ministers dated 20 June 1973 1505 N date of introduction is established 01.01.76

Limitation of actions taken by Protocol No. 2−92 of the Interstate Council for standardization, Metrology and certification (ICS 2−93)

EDITION (July 2004) with Changes No. 1, 2 approved in April 1980 and June 1987 (IUS 6−80, 9−87).

1. This standard applies to pull the wire made of molybdenum produced by powder metallurgy used in the manufacture of electronic devices and light sources.

2. The diameter of the wire and maximum deviation and the allowable deviation of the mass of the segment wire length of 200 mm from the nominal mass shall be as specified in the table.

Wire diameter, µm
 Maximum deviation of diameter, %, wire precision manufacturing Tolerance, %, by mass of the segment wire length of 200 mm precision manufacturing
increased accuracy
 normal accuracy
 increased accuracy
 normal accuracy
From 15 to 19,5 interval 0,5 -
 -
 ±3,0
 ±4,0
" 20 " 29,5 The same 0,5 -
 -
 ±2,5
 -
" 30 " 39,5 " 0,5 -
 -
 ±1,5
 ±3,0
" 40 " 104,4 " 1,0 -
 -
 ±1,5
 ±3,0
" 105
 " 205,0 " 5,0 -
 -
 ±1,5
 ±3,0
" 210 " 400,0 " 10,0 -
 -
 ±1,5
 ±3,0
" 420 " 840,0 " 20,0 ±1,5
 ±2,5
 -
 -
" 850 " 1550,0 " 50,0
 ±1,5
 ±2,5
 -
 -
" 1600 " 2500,0 " 100,0
 ±1,5
 ±2,5
 -
 -


Note. By agreement of the parties can be made wire with different values of nominal diameters and other extreme deviations from the nominal diameter.


(Changed edition, Rev. N 1, 2).

3. The purpose and the group of wire depending on the brand of molybdenum, the surface condition and metal specified in Annex 1.

4. The nominal mass of the segment wire length of 200 mm and tolerances given in Annex 2.

Example of designation of a wire made of molybdenum brand MRN, the normal precision manufacturing, group D, with a diameter of 700 microns

Wire MRN-N-D-700 GOST 18905−73

The same molybdenum brand MK, high precision manufacturing, group A, with a diameter of 250 microns:

Wire MK-N-A-250 GOST 18905−73

(Changed edition, Rev. N 2).

ANNEX 1
Recommended

THE PURPOSE MOLYBDENUM WIRE

Brand molyb-
Dan
 Group
 Surface condition and metal
 Diameter, µm
 Precision manufacturing
 Appointment
MCH
 And
 Black
 From 20 to 2500
 Increased, normal
 The core for the production of spirals of tungsten and its alloys. Hooks, support, Plushenko framework meshes and wire mesh with a diameter of 150 microns and other details
B
 Purified
 From 15 to 1000
 Increased, normal
 The core for the production of spirals of tungsten and its alloys. Hooks vacuum tubes
In
 Annealed
 From 20 to 1000
 Increased, normal
 Various details of vacuum devices
G
 Purified, annealed
 From 20 to 1000
 Increased, normal
 Mesh of electronic devices made of wire of diameter greater than 150 microns, beams, hooks, Plushenko core coils
D
 Annealed
 From 20 to 1000
 Increased
 The core for the production of spirals of tungsten and its alloys
MS
 And
 Black
 From 15 to 400
 Increased, normal
 Mesh electronic devices
B
 Purified
 From 20 to 200
 Increased, normal
In
 Annealed
 From 20 to 200
 Increased, normal
G, E
 Purified, annealed
 From 20 to 200
 Increased, normal
MK
 And
 Black
 200 to 2500
 Increased, normal
 The inputs to junction with quartz and other high temperature glasses and ceramics, metallic, support beams and powerful and some of the special incandescent lamps, cathodes of gas discharge devices and other parts that must have high strength after high temperature treatment. Can be used as a core in the helix of wire of the alloy tungsten-rhenium for titanium and ceramic lamps
B
 Purified
 From 200 to 1000
 Increased, normal
In
 Annealed
 From 200 to 1000
 Increased, normal
G
 Purified, annealed
 From 200 to 1000
 Increased, normal
MRN
 And
 Black
 From 600 to 2500
 Increased, normal
 Conclusions the core for the production of spirals of tungsten and its alloys, traverse
In
 Annealed
 From 600 to 1000
 Increased, normal
 Traverse
G
 Purified, annealed
 From 600 to 1000
 Increased, normal
 Traverse
D
 Annealed
 From 600 to 1000
 Increased
 The core for the production of spirals of tungsten and its alloys
IBSC
 And
 Black
 From 200 to 500
 Increased, normal
 Mesh electronic devices


Note. Molybdenum wire grade MS E and group brand IBSC is made by agreement between manufacturer and consumer.


APPENDIX 1. (Changed edition, Rev. N 1, 2).

ANNEX 2 (informative). Of ACCEPTABLE DEVIATION MASS CUT MOLYBDENUM WIRE LENGTH 200 mm

ANNEX 2
Reference

Nominal diameter, µm Nominal weight cut length 200 mm,
mg		 Permissible deviation of the mass of the segment wire length of 200 mm from the nominal value, mg precision manufacturing
increased accuracy
 normal accuracy
not less than
 no more
 not less than
 no more
15,0
 0,37
 0,36
 0,38
 -
 -
15,5
 0,39
 0,37
 0,41
 -
 -
16,0
 0,42
 0,40
 0,44
 -
 -
16,5
 0,44
 0,42
 0,46
 -
 -
17,0
 0,47
 0,45
 0,49
 -
 -
17,5
 0,50
 0,48
 0,52
 -
 -
18,0
 0,53
 0,51
 0,55
 -
 -
18,5
 0,56
 0,54
 0,58
 -
 -
19,0
 0,59
 0,57
 0,61
 -
 -
19,5
 0,62
 0,60
 0,64
 -
 -
20,0
 0,65
 0,63
 0,67
 -
 -
20,5
 0,69
 0,67
 0,71
 -
 -
21,0
 0,72
 0,70
 0,74
 -
 -
21,5
 0,75
 0,73
 0,77
 -
 -
22,0
 0,79
 0,77
 0,81
 -
 -
22,5
 0,83
 0,81
 0,85
 -
 -
23,0
 0,86
 0,84
 0,88
 -
 -
23,5
 0,90
 0,88
 0,92
 -
 -
24,0
 0,94
 0,92
 0,96
 -
 -
24,5
 0,98
 0,96
 Of 1.00
 -
 -
25,0
 1,02
 0,99
 1,05
 -
 -
25,5
 1,06
 1,03
 Of 1.09
 -
 -
26,0
 1,10
 Of 1.07
 1,13
 -
 -
26,5
 1,15
 1,12
 1,18
 -
 -
27,0
 1,19
 1,16
 1,22
 -
 -
27,5
 Of 1.23
 1,20
 1,26
 -
 -
28,0
 1,28
 1,25
 Of 1.31
 -
 -
28,5
 1,33
 1,30
 1,36
 -
 -
29,0
 1,37
 Of 1.34
 1,40
 -
 -
29,5
 1,42
 1,39
 1,45
 -
 -
30,0
 Of 1.47
 1,45
 1,49
 1,43
 Of 1.51
30,5
 1.52 m
 1,50
 1,54
 Of 1.47
 1,57
31,0
 1,57
 1.55 V
 1,59
 1.52 m
 1,62
31,5
 1,62
 1,60
 1,64
 1,57
 1,67
32,0
 1,67
 1,65
 1,69
 1,62
 1,72
32,5
 1,72
 1,69
 1,75
 1,67
 1,77
33,0
 1,78
 1,75
 1,81
 1,73
 1,83
33,5
 1,83
 1,80
 1,86
 1,78
 Of 1.88
34,0
 1,89
 1,86
 1,92
 1,83
 1,95
34,5
 Of 1.94
 Of 1.91
 Of 1.97
 Of 1.88
 Of 2.00
35,0
 Of 2.00
 Of 1.97
 2,03
 Of 1.94
 Of 2.06
35,5
 Of 2.06
 2,03
 Of 2.09
 Of 2.00
 2,12
36,0
 2,12
 Of 2.09
 2,15
 Of 2.06
 2,18
36,5
 2,17
 2,14
 2,20
 2,11
 Of 2.23
37,0
 Of 2.23
 2,20
 2,26
 Of 2.16
 2,30
37,5
 2,30
 2,27
 2,33
 Of 2.23
 2,37
38,0
 2,36
 2,33
 2,39
 2,29
 2,43
38,5
 2,42
 2,38
 2,46
 2,35
 2,49
39,0
 2,48
 2,44
 2,52
 2,41
 2,55
39,5
 2,55
 2,51
 2,59
 2,47
 2,63
40,0
 2,61
 2,57
 2,65
 Of 2.53
 2,69
41,0
 Of 2.74
 2,70
 Of 2.78
 Of 2.66
 2,82
42,0
 Of 2.88
 Of 2.84
 Of 2.92
 2,79
 2,97
43,0
 3,02
 Of 2.98
 3,06
 2,93
 3,11
44,0
 3,16
 3,11
 3,21
 3,07
 3,25
45,0
 3,31
 3,26
 3,36
 3,21
 3,41
46,0
 3,45
 3,40
 3,50
 3,35
 3,55
47,0
 3,61
 3,56
 3,66
 3,50
 3,72
48,0
 3,76
 3,70
 3,82
 3,65
 3,87
49,0
 3,92
 3,86
 Of 3.98
 3,80
 Of 4.04
50,0
 4,08
 4,02
 4,14
 Of 3.96
 4,20
51,0
 4,25
 4,19
 4,31
 4,12
 4,38
52,0
 4,41
 4,34
 4,48
 4,28
 4,54
53,0
 Of 4.59
 Of 4.52
 Of 4.66
 4,45
 4,73
54,0
 4,76
 4,69
 4,83
 4.62 a
 4,90
55,0
 4,94
 4,87
 Of 5.01
 4,79
 5,09
56,0
 5,12
 5,04
 5,20
 4,97
 5,27
57,0
 5,30
 5,22
 5,38
 5,14
 5,46
58,0
 5,49
 Of 5.41
 5,57
 Of 5.33
 5,65
59,0
 5,68
 5,60
 5,76
 5,51
 5,85
60,0
 Of 5.88
 5,79
 5,97
 5,70
 6,06
61,0
 6,08
 5,99
 6,17
 5,90
 6,26
62,0
 6,28
 6,19
 6,37
 6,09
 Of 6.47
63,0
 6,48
 6,38
 Of 6.58
 6,29
 6,67
64,0
 6,69
 Of 6.59
 Of 6.79
 Of 6.49
 6,89
65,0
 6,90
 Of 6.80
 7,00
 6,69
 7,11
66,0
 7,11
 7,00
 Of 7.22
 6,90
 7,32
67,0
 7,33
 Of 7.22
 7,44
 7,11
 7,55
68,0
 7,55
 7,44
 7,66
 7,32
 7,78
69,0
 Of 7.77
 7,65
 7,89
 7,54
 8,00
70,0
 8,00
 Of 7.88
 8,12
 7,76
 8,24
71.0 per
 8,23
 8,11
 8,35
 7,98
 8,48
72,0
 8,46
 8,33
 8,59
 Of 8.21
 Of 8.71
73,0
 8,70
 8,57
 8,83
 8,44
 Of 8.96
74,0
 Of 8.94
 Of 8.81
 9,07
 8,67
 9,21
75,0
 Of 9.18
 9,04
 9,32
 Of 8.91
 9,45
76,0
 9,43
 9,29
 9,57
 9,15
 Of 9.71
77,0
 Of 9.68
 Of 9.54
 Of 9.82
 9,39
 Of 9.97
78,0
 9,93
 9,78
 10.08 the
 9,63
 10,23
79,0
 10,19
 Of 10.04
 10,34
 For 9.88
 10,50
80,0
 Of 10.45
 10,29
 Of 10.61
 10,14
 Of 10.76
81,0
 To 10.71
 10,55
 With 10.87
 10,39
 Of 11.03
82,0
 Of 10.98
 10,82
 11,14
 10,65
 Of 11.31
83,0
 11,25
 11,08
 11,42
 10,91
 At 11.59
84,0
 11,52
 11,35
 11,69
 11,17
 11,87
85,0
 11,80
 11,62
 11,98
 11,45
 12,15
86,0
 12,08
 11,90
 12,26
 11,72
 Of 12.44
87,0
 12,36
 12,18
 12,54
 11,99
 The 12.73
88,0
 12,64
 12,45
 Of 12.83
 12,26
 Of 13.02
89,0
 12,93
 12,74
 13,12
 12,54
 Of 13.32
90,0
 13,22
 Of 13.02
 13,42
 Of 12.82
 Of 13.62
91,0
 13,52
 Of 13.32
 13,72
 13,12
 13,92
92,0
 13,82
 13,61
 14,03
 13,41
 14,23
93,0
 14,12
 13,91
 14,33
 Of 13.70
 Of 14.54
94,0
 14,43
 Of 14.21
 14,65
 14,00
 14,86
95,0
 14,74
 14,52
 14,96
 14,30
 15,18
96,0
 15,05
 Of 14.82
 15,28
 Of 14.60
 15,50
97,0
 15,36
 15,13
 Of 15.59
 14,90
 15,82
98,0
 15,68
 And 15.44
 15,92
 Of 15.21
 16,15
99,0
 16,00
 15,76
 16,24
 15,52
 16,48
100,0
 16,33
 With 16.09
 Accounting period 16.57
 15,84
 16,82
101,0
 16,66
 16,41
 16,91
 16,16
 17,16
102,0
 16,99
 16,74
 17,24
 16,48
 17,50
103,0
 17,32
 17,06
 17,58
 16,80
 17,84
104,0
 17,66
 17,40
 17,92
 Of 17.13
 18,19
105,0
 18,00
 Of 17.73
 18,27
 17,46
 18,54
110,0
 19,76
 19,46
 Of 20.06
 19,17
 20,35
115,0
 21,59
 Of 21.27
 21,91
 20,94
 22,24
120,0
 23,51
 23,16
 23,86
 22,80
 24,22
125,0
 Has 25.51
 25,13
 25,89
 24,75
 26,27
130,0
 27,59
 27,18
 28,00
 To 26.76
 From 28.42
Of 135.0
 29,76
 29,31
 Of 30.21
 Of 28.87
 30,65
140,0
 32,00
 31,52
 32,48
 31,04
 32,96
145,0
 34,33
 33,82
 34,84
 33,30
 35,36
150,0
 36,74
 36,19
 37,29
 Of 35.64
 37,84
155,0
 39,23
 Of 38.64
 39,82
 38,05
 40,41
160,0
 41,80
 41,17
 42,43
 40,55
 43,05
165,0
 44,45
 43,78
 Of 45.12
 43,12
 45,78
170,0
 47,10
 46,48
 47,90
 45,77
 For 48. 61
175,0
 50,00
 49,25
 50,75
 48,50
 51,50
180,0
 52,90
 52,11
 53,69
 51,31
 54,49
185,0
 55,88
 55,04
 56,72
 54,20
 57,56
190,0
 58,94
 58,06
 59,82
 57,17
 A 60.71
195,0
 62,09
 61,16
 63,02
 60,23
 63,95
200,0
 65,31
 64,33
 66,29
 63,35
 67,27
205,0
 68,62
 67,59
 From 69.65
 66,56
 70,68
Of 210.0
 72,01
 70,93
 73,09
 69.85 mm
 74,17
220,0
 79,03
 For 77.85
 Of 80.21
 76,66
 81,40
230,0
 86.37 from
 85,08
 87,66
 83,78
 88,96
240,0
 94,05
 92,64
 95,46
 Of 91.23
 96,87
250,0
 102,05
 100,52
 103,58
 98,99
 105,11
260,0
 110,38
 108,72
 112,04
 107,07
 113,69
: 270.0 cm
 119,03
 117,25
 120,81
 At 115.46
 122,60
280,0
 128,01
 126,09
 129,93
 124,17
 131,85
290,0
 137,32
 Of 135.26
 139,38
 133,20
 141,44
300,0
 146,95
 144,75
 149,15
 142,54
 151,36
310,0
 156,91
 154,56
 159,26
 152,20
 161,62
320,0
 167,20
 164,69
 169,71
 162,18
 172,22
330,0
 177,81
 175,14
 180,48
 172,48
 183,14
340,0
 188,75
 185,92
 191,58
 183,09
 194,41
To 350.0
 200,02
 197,02
 203,02
 194,02
 206,02
360,0
 207,50
 204,39
 210,61
 201,28
 213,72
370,0
 219,2
 215,91
 234,67
 212,62
 225,78
380,0
 231,2
 227,73
 222,49
 242,26
 238,14
390,0
 Of 243.6
 239,95
 247,25
 236,29
 250,91
400,0
 256,2
 252,36
 260,04
 248,51
 263,89


Note. The calculation of the wire diameter ГОСТ 18905-73 Проволока молибденовая. Сортамент (с Изменениями N 1, 2)in microns for the mass cut are based on a formula

ГОСТ 18905-73 Проволока молибденовая. Сортамент (с Изменениями N 1, 2),

where ГОСТ 18905-73 Проволока молибденовая. Сортамент (с Изменениями N 1, 2)is the mass of the segment, mg;

ГОСТ 18905-73 Проволока молибденовая. Сортамент (с Изменениями N 1, 2) — constant coefficient = 3.14;

ГОСТ 18905-73 Проволока молибденовая. Сортамент (с Изменениями N 1, 2) — cut length of wire equal to 200 mm;

ГОСТ 18905-73 Проволока молибденовая. Сортамент (с Изменениями N 1, 2) — the density of molybdenum, which is taken equal to 10.4 g/cmГОСТ 18905-73 Проволока молибденовая. Сортамент (с Изменениями N 1, 2)for diameters of 15−350 microns and 10.2 g/cmГОСТ 18905-73 Проволока молибденовая. Сортамент (с Изменениями N 1, 2)for diameters of 351−400 µm.


APPENDIX 2. (Changed edition, Rev. N 1, 2).