A878

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America ASTM A878 经改良的铬钒阀弹簧级钢丝 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A878 / A878

Category	Grade	Standard	Region/Area	Standard Content
Metals	A878	ASTM A878/A878M	America	经改良的铬钒阀弹簧级钢丝

Chemical composition(mass fraction)(wt.%) of the A878

Element	Min	Max	Similar
V	0.1000	0.2500	-
Si	0.1500	0.3000	-
S	-	0.0250	-
P	-	0.0250	-
Mn	0.5000	0.9000	-
Cr	0.3500	0.6000	-
C	0.6000	0.7500	-

Mechanical Properties of steel grade A878

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)
396 (≥)	498 (≥)	41	43	43	Solution and Aging, Annealing, Ausaging, Q+T,etc	342

Physical Properties of steel grade A878

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	-	-			0.33	-
393	391	-	22.3	342		-
913	-	42	14.2			424	122

Heat Treatment of steel grade A878

Heat treated : 1163°C - 1524°C

Technological Curves of steel grade A878

No Curve

Cross Reference Table (Equivalent Grade) of A878

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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