SAE 640

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America SAE SAE640 Wrought and cast copper alloys and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SAE640 / SAE 640

Category	Grade	Standard	Region/Area	Standard Content
Metals	SAE 640	SAE J 461	America	Wrought and cast copper alloys

Chemical composition(mass fraction)(wt.%) of the SAE 640

Element	Min	Max	Similar
Zn	-	0.5000	-
Sn	10.0000	12.0000	-
Si	-	0.0050	-
Sb	-	0.2500	-
S	-	0.0500	-
Pb	1.0000	1.5000	-
P	-	0.3000	-
Ni	0.8000	1.5000	-
Fe	-	0.3000	-
Cu	85.0000	88.0000	-
Al	-	0.0050	-

Mechanical Properties of steel grade SAE 640

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
426 (≥)	952 (≥)	34	44	33	Solution and Aging, Annealing, Ausaging, Q+T,etc	131

Physical Properties of steel grade SAE 640

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
21	-	-			0.42	-
715	619	-	33.3	424		-
211	-	43	13.2			333	313

Heat Treatment of steel grade SAE 640

Heat treated : 1621°C - 1433°C

Technological Curves of steel grade SAE 640

No Curve

Cross Reference Table (Equivalent Grade) of SAE 640

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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