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S31803Application:Dual-phase steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy S31803UNSUSA

Chemical composition%of the ladle analysis of gradeS31803

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Mo(%)N(%)
0.0312Max 0.03Max 0.0221.0-23.04.50-6.502.50-3.502.50-3.50
S31803
Mechanical properties of gradeS31803
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)
982(≥)239(≥)143212Solution and Aging,Annealing,Ausaging,Q+T,etc442
Physical properties of gradeS31803
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
319(≥)724(≥)322442Solution and Aging,Annealing,Ausaging,Q+T,etc314
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
452987463
S31803Range 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
A 1049 S31803UNSUSA
Stainless Steel Forgings, Ferritic/Austenitic (Duplex), for Pressure Vessels and Related Components
A 240 S31803UNSUSA
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 270 S31803UNSUSA
Seamless and Welded Austenitic Stainless Steel Sanitary Tubing
A 276 S31803UNSUSA
Stainless Steel Bars and Shapes
A 479 S31803UNSUSA
Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels
A 511 S31803UNSUSA
Seamless Stainless Steel Mechanical Tubing
A 789 S31803UNSUSA
Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
A 790 S31803UNSUSA
Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
A 815 CRS31803UNSUSA
Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings
A 815 WPS31803UNSUSA
Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings
A 928 S31803UNSUSA
Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
A 949 S31803UNSUSA
Spray-Formed Seamless Ferritic/Austenitic Stainless Steel Pipe
A 955 S31803 Grade 280UNSUSA
Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
A 955 S31803 Grade 40UNSUSA
Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
A 955 S31803 Grade 420UNSUSA
Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
A 955 S31803 Grade 520UNSUSA
Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
A 955 S31803 Grade 60UNSUSA
Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
A 955 S31803 Grade 75UNSUSA
Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement
A 959 S31803UNSUSA
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
A 988 S31803UNSUSA
Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service

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