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Alloy 731

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EU EN Alloy731 Soft solder alloys - Chemical compositions and forms (ISO 9453:2014) and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Alloy731 / Alloy 731
Category Grade Standard Region/Area Standard Content
Metals Alloy 731 EN ISO 9453 EU Soft solder alloys - Chemical compositions and forms (ISO 9453:2014)

Chemical composition(mass fraction)(wt.%) of the Alloy 731

Element Min Max Similar
Au - 0.0500 -
In 0.2000 0.8000 -
Ni - 0.0100 -
Cu 0.3000 0.7000 -
Cd - 0.0020 -
Al - 0.0010 -
Zn - 0.0010 -
Sn - - -
Sb - 0.1000 -
Fe - 0.0200 -
Ag 1.0000 1.4000 -
As - 0.0300 -
Bi - 0.1000 -
Pb - 0.0700 -

Mechanical Properties of steel grade Alloy 731

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)
485 (≥) 957 (≥) 22 41 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade Alloy 731

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
32 - -     0.22 -  
813 124 - 31.3 343   -  
315 - 22 34.2   122 244

Heat Treatment of steel grade Alloy 731

Heat treated : 1356°C - 1833°C

Technological Curves of steel grade Alloy 731

Cross Reference Table (Equivalent Grade) of Alloy 731

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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