B.S. X2CrNiMoCuWN25-7-4

Grades | Stainless Steels | X2CrNiMoCuWN25-7-4

B.S. X2CrNiMoCuWN25-7-4 ( Austenitic-Ferritic(Duplex steel) )

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X2CrNiMoCuWN25-7-4 Application:Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel

Chemical composition(mass fraction)(wt.%) of the X2CrNiMoCuWN25-7-4
Elements Min.（≥） Max.（≤） Similar Remarks
C - 0.03
Si - 1.00
Mn - 1.00
P - 0.035
S - 0.015
Cr 24.00 26.00
Ni 6.00 8.00
Mo 3.00 4.00
N 0.20 0.30
W 0.50 1.00
Cu 0.50 1.00

Mechanical properties of grade X2CrNiMoCuWN25-7-4

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition HBW
783 (≥) 374 (≥) 41 41 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical properties of grade X2CrNiMoCuWN25-7-4

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm
861 (≥) 463 (≥) 22 13 24 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2		 - - -
821 975 866 - - -

X2CrNiMoCuWN25-7-4 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