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DP-3Application:Dual-phase steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy DP-3UNSUSA

Chemical composition%of the ladle analysis of gradeDP-3

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Mo(%)W(%)N(%)Cu(%)
0.030.751Max 0.03Max 0.0324.0-26.05.50-7.502.50-3.500.10-0.500.10-0.300.20-0.80
DP-3
Mechanical properties of gradeDP-3
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)
529(≥)817(≥)413121Solution and Aging,Annealing,Ausaging,Q+T,etc242
Physical properties of gradeDP-3
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
287(≥)913(≥)241332Solution and Aging,Annealing,Ausaging,Q+T,etc424
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
445711565
DP-3Range 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 240 S31260UNSUSA
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 511 S31260UNSUSA
Seamless Stainless Steel Mechanical Tubing
A 789 S31260UNSUSA
Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
A 790 S31260UNSUSA
Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
A 928 S31260UNSUSA
Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
A 949 S31260UNSUSA
Spray-Formed Seamless Ferritic/Austenitic Stainless Steel Pipe
A 959 S31260UNSUSA
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
S31260UNSUSA
Duplex (Austenitic-Ferritic) Chromium Nickel Molybdenum Wolfram Stainless Steel
SA-240 S31260UNSUSA
Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
SA-789 S31260UNSUSA
Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Tubing for General Service
SA-790 S31260UNSUSA
Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Pipe

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