631

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#631

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631 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: 631

Category	Type	Steel Grade
Steel Grades	High Alloy	631
		S41041
		S41425
		615
		S41800
		616
		S42200
		619
		S42300
		630
		S17400

Chemical composition(mass fraction)(wt.%) of the 631

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.09	1	1	0.04	0.03	16-18	6.5-7.7
Mo	Al	Cu	Nb	Ti	V	Ce
	0.75-1.5
N	Co	Pb	B	Other

Mechanical Properties of steel grade 631

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)
928 (≥)	849 (≥)	41	44	44	Solution and Aging, Annealing, Ausaging, Q+T,etc	223

Physical Properties of steel grade 631

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
34	-	-			0.43	-
619	316	-	32.3	333		-
316	-	23	24.2			342	414

Heat Treatment of steel grade 631

Heat treated : 1956°C - 1734°C

Technological Curves of steel grade 631

No Curve

Cross Reference Table (Equivalent Grade) of 631

Grade	Standard	Country	Application
1.2631	DIN	Germany	Cold working alloy tool steel
AISI 631	AISI	USA	precipitation hardening
ASTM 631	ASTM	USA	precipitation hardening
UNS S63198	UNS	USA	precipitation hardening
UNS S63198	UNS	USA	precipitation hardening
UNS S63199	UNS	USA	precipitation hardening
2.4631	DIN	Germany	The high-temperature and high-strength steel
SUS631	JIS	Japan	precipitation-hardening stainless
SUS631-CPS	JIS	Japan	stainless steel
STS631			martensitic steel
STS631			martensitic steel
CNS 631		China	CNS standard precipitation hardening stainless steel
CNS 631-CPS		China	CNS standard springs made of cold rolled stainless steel
416310			The Czech republic Structural steel
16310			The Czech republic Structural steel
V-631			Brazil Stainless steel
CNS 631		China	China Taiwan Stainless steel
631-CPS		China	China Taiwan Stainless steel
SNC631H		China	China Taiwan Structural steel
SNC631		China	China Taiwan Structural steel

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Rfq.: sales@longhaisteel.com

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631