ASTM S7

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#ASTM # #S7

Description

ASTM S7 Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel: ASTM S7

Category	Type	Steel Grade
Steel Grades	Tool Steel	ASTM S7
		ASTM S1
		UNS T41901
		ASTM S2
		UNS T41902
		ASTM S4
		UNS T41904
		ASTM S5
		UNS T41905
		ASTM S6
		UNS T41906

Chemical composition(mass fraction)(wt.%) of the ASTM S7

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.45-0.55	0.2-1.0	0.2-0.9	0.03	0.03	3-3.5
Mo	Al	Cu	Nb	Ti	V	Ce
1.3-1.8					≤0.35
N	Co	Pb	B	Other

Mechanical Properties of steel grade ASTM S7

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)
825 (≥)	228 (≥)	33	13	41	Solution and Aging, Annealing, Ausaging, Q+T,etc	143

Physical Properties of steel grade ASTM S7

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
33	-	-			0.41	-
524	733	-	14.3	432		-
196	-	44	12.2			341	413

Heat Treatment of steel grade ASTM S7

Heat treated : 1567°C - 1178°C

Technological Curves of steel grade ASTM S7

No Curve

Cross Reference Table (Equivalent Grade) of ASTM S7

Grade	Standard	Country	Application
ASTM 1030	ASTM	USA	General use carbon steel bar
ASTM 1005	ASTM	USA	General use carbon steel bar
ASTM 1006	ASTM	USA	General use carbon steel bar
ASTM 1008	ASTM	USA	General use carbon steel bar
ASTM 1010	ASTM	USA	General use carbon steel bar
ASTM 1013	ASTM	USA	General use carbon steel bar
ASTM 1015	ASTM	USA	General use carbon steel bar
ASTM 1016	ASTM	USA	General use carbon steel bar
ASTM 1017	ASTM	USA	General use carbon steel bar
ASTM 1018	ASTM	USA	General use carbon steel bar
ASTM 1019	ASTM	USA	General use carbon steel bar
ASTM 1020	ASTM	USA	General use carbon steel bar
ASTM 1021	ASTM	USA	General use carbon steel bar
ASTM W1-A	ASTM	USA	Carbon tool steel
ASTM A182 F55	ASTM	USA	Super Duplex
ASTM 431	ASTM	USA	Martensitic special steel
ASTM 440A	ASTM	USA	Martensitic special steel
ASTM 440B	ASTM	USA	Martensitic special steel
ASTM 440C	ASTM	USA	Martensitic special steel
ASTM 501	ASTM	USA	Martensitic special steel

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