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CNS 440A

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CNS 431 CNS 440B
#440A

Description

China CNS CNS 440A CNS standard martensite stainless steel and CNS 440A Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: CNS 440A
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy CNS 440A CNS China CNS standard martensite stainless steel
CNS 447J1
CNS XM27
CNS 403
CNS 410
CNS 410J1
CNS 416
CNS 420J1
CNS 420J2
CNS 420F
CNS 431

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

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％)
0.60-0.75 Max 1.00 Max 1.00 Max 0.040 Max 0.030 16.00-18.00 Max 0.60 Max 0.75

Mechanical Properties of steel grade CNS 440A

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
479 (≥) 858 (≥) 32 13 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade CNS 440A

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
13 - -     0.13 -  
473 548 - 34.3 331   -  
655 - 11 31.2   212 232

Heat Treatment of steel grade CNS 440A

Heat treated : 1267°C - 1973°C

Technological Curves of steel grade CNS 440A

Cross Reference Table (Equivalent Grade) of CNS 440A

Grade Standard Country Application
AISI 440A AISI China Martensitic special steel
ASTM 440A ASTM USA Martensitic special steel
SUS440A JIS Japan Martensitic special steel
STS440A KS Korea martensitic steel
STS440A KS Korea martensitic steel
CNS 440A CNS China CNS standard martensite stainless steel
CNS 440A CNS China China Taiwan Stainless steel
CNS 440A CNS China China Taiwan Stainless steel
CNS 431 CNS 440B
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

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...

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