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CNS 631Application:China Taiwan Stainless steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy CNS 631CNSChina

Chemical composition%of the ladle analysis of gradeCNS 631

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Al(%)
Max 0.09Max 1.00Max 1.000.040.0316.00-18.006.50-7.750.75-1.50
CNS 631
Mechanical properties of gradeCNS 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 ConditionBrinell hardness(HBW)
676(≥)651(≥)431442Solution and Aging,Annealing,Ausaging,Q+T,etc234
Physical properties of gradeCNS 631
PropertyDensity
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
152(≥)583(≥)421112Solution and Aging,Annealing,Ausaging,Q+T,etc144
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
681561794
CNS 631Range of products
Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging,hot rolling and cold rollingAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel BarRound Bar,Flat Bar,Square BarΦ8-1200mm*LForging,hot rolling and cold rolling,CastBlack,Rough Turning,Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/TubesSeamless Pipes/Tubes,Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion,Cold Drawn,WeldedAnnealed,Solution and Aging,Q+T,ACID-WASHED
Cross Reference Table(Equivalent Grade)
GradeStandardCountryApplication
HNV5CNSChina
Steel for intake valves
S63005CNSChina
Steel for intake valves
Z1CNS17-15CNSChina
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z11CNS17-07AzCNSChina
Stainless steels for general purposes. Plates, wide strips and strips
Z15CNS25-20CNSChina
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z17CNS20-12CNSChina
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z80CNS20-02CNSChina
Valve steels and alloys for internal combustion engines
0Cr17Ni7AlCNSChina
Heat-resisting steel sheets and plates
0Cr17Ni7AlCNSChina
Heat-resisting steel sheets and plates
S63198CNSChina
Iron Base Superalloy
A 313 S17700CNSChina
Stainless Steel Spring Wire
A 564 S17700CNSChina
Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes
A 693 S17700CNSChina
Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
A 705 S17700CNSChina
Age-Hardening Stainless Steel Forgings
S17700CNSChina
Precipitation Hardenable Chromium Nickel Aluminum Stainless Steel
SA-564 S17700CNSChina
Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes
SA-693 S17700CNSChina
Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
SA-705 S17700CNSChina
Specification for Age-Hardening Stainless Steel Forgings
S63198CNSChina
Iron Base Superalloy
A 313 S17700CNSChina
Stainless Steel Spring Wire

Relevant products

CNS 631 Steel Stock

Steel gradeDimensionShapeUnitQuantityDelivery stateQuery
17-7PH / 631 Coil & Strip, Sheet Stock0.3-3.0*10-180mmCoil or StripKgs1236.22Cold-Rolled+AnnealedEnquiry

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