431

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431 Stainless Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Stainless Steel: 431

Category	Type	Steel Grade
Steel Grades	Stainless Steel	431
		S42020
		420FSe
		S42023
		616
		S42200
		S42225
		619
		S42300
		439
		S43035

Chemical composition(mass fraction)(wt.%) of the 431

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.20	1.00	1.00	0.040	0.030	15.0-17.0	1.25-2.50
Mo	Al	Cu	Nb	Ti	V	Ce

N	Co	Pb	B	Other

Mechanical Properties of steel grade 431

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)
789 (≥)	626 (≥)	34	43	31	Solution and Aging, Annealing, Ausaging, Q+T,etc	113

Physical Properties of steel grade 431

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
24	-	-			0.43	-
276	238	-	23.3	114		-
775	-	43	42.2			244	434

Heat Treatment of steel grade 431

Heat treated : 1554°C - 1864°C

Technological Curves of steel grade 431

No Curve

Cross Reference Table (Equivalent Grade) of 431

Grade	Standard	Country	Application
AISI 431	AISI	USA	Martensitic special steel
ASTM 431	ASTM	USA	Martensitic special steel
UNS S43100	UNS	USA	Martensitic special steel
SUS431	JIS	Japan	Martensitic special steel
SUS431FB	JIS	Japan	martensitic stainless steel
431S29			austenitic special steel
1.4313	AFNOR	France	Martensite And Precipitation Hardening
1.4310	AFNOR	France	Austenite
1.4318	AFNOR	France	Austenite
1.4311	AFNOR	France	Austenite
STS431			martensitic steel
STS431			martensitic steel
CNS 431		China	CNS standard martensite stainless steel
E1431			Spain structural alloy steel
411431			The Czech republic Structural steel
11431			The Czech republic Structural steel
416431			The Czech republic Structural steel
16431			The Czech republic Structural steel
X4317			Australia Structural steel
X4317H			Australia Structural steel

Available Suppliers

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Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

Rfq.: sales@longhaisteel.com

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