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Description

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

Datasheet for: Steel Grades:Stainless Steel: 440A
Category Type Steel Grade Standard Country Application
Steel GradesStainless Steel 440A
S42023
616
S42200
S42225
619
S42300
439
S43035
431
S43100

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

 

C
Si
Mn
P
S
Cr Ni
0.60-0.75 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 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)
929 (≥) 872 (≥) 43 22 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade 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
32 - -     0.12 -  
123 456 - 31.3 214   -  
582 - 13 44.2   313 324

Heat Treatment of steel grade 440A

Heat treated : 1742°C - 1549°C

Technological Curves of steel grade 440A

Cross Reference Table (Equivalent Grade) of 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 martensitic steel
STS440A martensitic steel
CNS 440A China CNS standard martensite stainless steel
CNS 440A China China Taiwan Stainless steel
CNS 440A China China Taiwan Stainless steel

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