AFNOR X2CrNiMoN25-7-4

Grades | Stainless Steels | X2CrNiMoN25-7-4

AFNOR X2CrNiMoN25-7-4 ( Austenitic-Ferritic(Duplex steel) )

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X2CrNiMoN25-7-4 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 X2CrNiMoN25-7-4
Elements Min.（≥） Max.（≤） Similar Remarks
C - 0.030
Si - 1.00
Mn - 2.00
P - 0.035
S - 0.015
Cr 24.00 26.00
Mo 3.00 4.50
Ni 6.00 8.00
N 0.20 0.35

Mechanical properties of grade X2CrNiMoN25-7-4

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition HBW
383 (≥) 665 (≥) 31 11 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical properties of grade X2CrNiMoN25-7-4

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm
122 (≥) 632 (≥) 24 43 12 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		 - - -
982 499 589 - - -

X2CrNiMoN25-7-4 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