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

Chemical composition % of the ladle analysis of grade CNS 440B

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%)
0.75-0.95 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 440B
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)
634 (≥) 684 (≥) 23 42 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 121
Physical properties of grade CNS 440B
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
887 (≥) 448 (≥) 24 23 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 224
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
845 783 821
CNS 440B 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 S44003 CNS China
Stainless Steel Bars and Shapes
A 314 S44003 CNS China
Stainless Steel Billets and Bars for Forging
A 473 S44003 CNS China
Stainless Steel Forgings
A 580 S44003 CNS China
Stainless Steel Wire
S44003 CNS China
Hardenable Chromium Stainless Steel
SUS 440B CNS China
Stainless steel bars
STS440B CNS China
Stainless steel bars
440B CNS China
Stainless steel bars
ASTM440B CNS China
ASTM440B
AISI440B CNS China
AISI440B

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