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DP-3 Application:Dual-phase steel
Category Type Steel grade Standard Country
Grades Special Alloy DP-3 UNS USA

Chemical composition % of the ladle analysis of grade DP-3

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) W(%) N(%) Cu(%)
0.03 0.75 1 Max 0.03 Max 0.03 24.0-26.0 5.50-7.50 2.50-3.50 0.10-0.50 0.10-0.30 0.20-0.80
DP-3
Mechanical properties of grade DP-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 Condition Brinell hardness (HBW)
797 (≥) 897 (≥) 22 11 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 411
Physical properties of grade DP-3
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
484 (≥) 731 (≥) 22 42 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 131
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
833 656 924
DP-3 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 240 S31260 UNS USA
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 511 S31260 UNS USA
Seamless Stainless Steel Mechanical Tubing
A 789 S31260 UNS USA
Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
A 790 S31260 UNS USA
Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
A 928 S31260 UNS USA
Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
A 949 S31260 UNS USA
Spray-Formed Seamless Ferritic/Austenitic Stainless Steel Pipe
A 959 S31260 UNS USA
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
S31260 UNS USA
Duplex (Austenitic-Ferritic) Chromium Nickel Molybdenum Wolfram Stainless Steel
SA-240 S31260 UNS USA
Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
SA-789 S31260 UNS USA
Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Tubing for General Service
SA-790 S31260 UNS USA
Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Pipe

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