50 ChGFA

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Bulgaria BDS 50ChGFA Spring steels. Designations and technical requirements and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 50ChGFA / 50 ChGFA

Category	Grade	Standard	Region/Area	Standard Content
Metals	50 ChGFA	BDS 6742	Bulgaria	Spring steels. Designations and technical requirements

Chemical composition(mass fraction)(wt.%) of the 50 ChGFA

Element	Min	Max	Similar
V	0.1500	0.2500	-
Si	0.1700	0.3700	-
S	-	0.0250	-
P	-	0.0250	-
Ni	-	0.3000	-
Mn	0.8000	1.0000	-
Cu	-	0.3000	-
Cr	0.9500	1.2000	-
C	0.4800	0.5500	-

Mechanical Properties of steel grade 50 ChGFA

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)
864 (≥)	322 (≥)	42	23	44	Solution and Aging, Annealing, Ausaging, Q+T,etc	131

Physical Properties of steel grade 50 ChGFA

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
42	-	-			0.31	-
753	859	-	13.3	232		-
296	-	23	11.2			233	111

Heat Treatment of steel grade 50 ChGFA

Heat treated : 1259°C - 1238°C

Technological Curves of steel grade 50 ChGFA

No Curve

Cross Reference Table (Equivalent Grade) of 50 ChGFA

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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