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CNS 440A Application:CNS standard martensite stainless steel
Category Type Steel grade Standard Country
Grades Special Alloy CNS 440A CNS China

Chemical composition % of the ladle analysis of grade 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
CNS standard martensite stainless steel
Mechanical properties of grade CNS 440A
Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
289 (≥) 452 (≥) 13 31 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 114
Physical properties of grade CNS 440A
Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
421 (≥) 666 (≥) 21 41 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 331
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
236 366 236
CNS 440A Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
A 276 S44002 CNS China
Stainless Steel Bars and Shapes
A 314 S44002 CNS China
Stainless Steel Billets and Bars for Forging
A 473 S44002 CNS China
Stainless Steel Forgings
A 580 S44002 CNS China
Stainless Steel Wire
S44002 CNS China
Hardenable Chromium Stainless Steel
SUS 440A CNS China
Stainless steel bars
SUS 440A CNS China
Hot-rolled stainless steel plates, sheet and strip
SUS 440A CNS China
Cold-rolled stainless steel plate, sheet and strip
STS440A CNS China
Stainless steel bars
440A CNS China
Stainless steel bars
AISI440A CNS China
AISI440A
ASTM440A CNS China
ASTM440A

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