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CNS 631 Application:China Taiwan Stainless steel
Category Type Steel grade Standard Country
Grades Special Alloy CNS 631 CNS China

Chemical composition % of the ladle analysis of grade CNS 631

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Al(%)
Max 0.09 Max 1.00 Max 1.00 0.04 0.03 16.00-18.00 6.50-7.75 0.75-1.50
CNS 631
Mechanical properties of grade CNS 631
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)
791 (≥) 476 (≥) 21 33 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 344
Physical properties of grade CNS 631
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
126 (≥) 615 (≥) 13 23 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 422
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
998 613 586
CNS 631 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
HNV5 CNS China
Steel for intake valves
S63005 CNS China
Steel for intake valves
Z1CNS17-15 CNS China
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z11CNS17-07Az CNS China
Stainless steels for general purposes. Plates, wide strips and strips
Z15CNS25-20 CNS China
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z17CNS20-12 CNS China
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z80CNS20-02 CNS China
Valve steels and alloys for internal combustion engines
0Cr17Ni7Al CNS China
Heat-resisting steel sheets and plates
0Cr17Ni7Al CNS China
Heat-resisting steel sheets and plates
S63198 CNS China
Iron Base Superalloy
A 313 S17700 CNS China
Stainless Steel Spring Wire
A 564 S17700 CNS China
Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes
A 693 S17700 CNS China
Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
A 705 S17700 CNS China
Age-Hardening Stainless Steel Forgings
S17700 CNS China
Precipitation Hardenable Chromium Nickel Aluminum Stainless Steel
SA-564 S17700 CNS China
Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes
SA-693 S17700 CNS China
Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
SA-705 S17700 CNS China
Specification for Age-Hardening Stainless Steel Forgings
S63198 CNS China
Iron Base Superalloy
A 313 S17700 CNS China
Stainless Steel Spring Wire

Relevant products

CNS 631 Equivalent Grade Stock

Steel grade Dimension Shape Unit Quantity Delivery state Query
17-7PH / 631 Coil & Strip, Sheet Stock 0.3-3.0*10-180mm Coil or Strip Kgs 1236.22 Cold-Rolled+Annealed Enquiry

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