440B

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#440B

Description

440B Stainless Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Stainless Steel: 440B

Category	Type	Steel Grade
Steel Grades	Stainless Steel	440B
		S42200
		S42225
		619
		S42300
		439
		S43035
		431
		S43100
		440A
		S44002

Chemical composition(mass fraction)(wt.%) of the 440B

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.75-0.95	1.00	1.00	0.040	0.030	16.0-18.0
Mo	Al	Cu	Nb	Ti	V	Ce
≤0.75
N	Co	Pb	B	Other

Mechanical Properties of steel grade 440B

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)
939 (≥)	716 (≥)	14	13	23	Solution and Aging, Annealing, Ausaging, Q+T,etc	232

Physical Properties of steel grade 440B

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
23	-	-			0.23	-
188	331	-	43.3	134		-
189	-	33	24.2			141	141

Heat Treatment of steel grade 440B

Heat treated : 1984°C - 1584°C

Technological Curves of steel grade 440B

No Curve

Cross Reference Table (Equivalent Grade) of 440B

Grade	Standard	Country	Application
AISI 440B	AISI	USA	Martensitic special steel
ASTM 440B	ASTM	USA	Martensitic special steel
SUS440B	JIS	Japan	Martensitic special steel
STS440B			martensitic steel
STS440B			martensitic steel
CNS 440B		China	CNS standard martensite stainless steel
CNS 440B		China	China Taiwan Stainless steel

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