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B631 Class B4

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America ASTM B631ClassB4 银钨电接触材料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B631ClassB4 / B631 Class B4
Category Grade Standard Region/Area Standard Content
Metals B631 Class B4 ASTM B631 America 银钨电接触材料

Chemical composition(mass fraction)(wt.%) of the B631 Class B4

Element Min Max Similar
W - - -
Total Others - 1.0000 -
Cu - 0.2000 -
Co - 1.0000 -
C - 0.2000 -
Ag 47.0000 51.0000 -

Mechanical Properties of steel grade B631 Class B4

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
549 (≥) 116 (≥) 31 43 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade B631 Class B4

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
11 - -     0.21 -  
842 242 - 43.3 331   -  
354 - 22 12.2   433 341

Heat Treatment of steel grade B631 Class B4

Heat treated : 1582°C - 1859°C

Technological Curves of steel grade B631 Class B4

Cross Reference Table (Equivalent Grade) of B631 Class B4

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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