S 204

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England B.S. S204 Specification for chromium-vanadium steel wire and springs (high duty ground wire - hardened and tempered) and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S204 / S 204

Category	Grade	Standard	Region/Area	Standard Content
Metals	S 204	BS S 204	England	Specification for chromium-vanadium steel wire and springs (high duty ground wire - hardened and tempered)

Chemical composition(mass fraction)(wt.%) of the S 204

Element	Min	Max	Similar
Si	0.2000	1.0000	-
S	-	0.0250	-
P	-	0.0350	-
Ni	7.5000	9.0000	-
Mn	0.5000	2.0000	-
Cr	17.0000	19.0000	-
C	-	0.1500	-

Mechanical Properties of steel grade S 204

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)
612 (≥)	893 (≥)	44	12	22	Solution and Aging, Annealing, Ausaging, Q+T,etc	234

Physical Properties of steel grade S 204

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
22	-	-			0.33	-
581	194	-	21.3	122		-
867	-	31	22.2			141	244

Heat Treatment of steel grade S 204

Heat treated : 1563°C - 1956°C

Technological Curves of steel grade S 204

No Curve

Cross Reference Table (Equivalent Grade) of S 204

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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