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X6NiCrTiMoB25-15-2 Application:Fasteners with stainless steel and nickel alloy for high temperature and low temperature (NF-EN 10269(1999))
Category Type Steel grade Standard Country
Grades Special Alloy X6NiCrTiMoB25-15-2 AFNOR France

Chemical composition % of the ladle analysis of grade X6NiCrTiMoB25-15-2

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) V(%) B(%) Al(%) Ti(%)
0.03-0.08 Max 1.00 1.00-2.00 Max 0.025 Max 0.015 13.5-16.0 24.0-27.0 1.00-1.50 0.10-0.50 0.003-0.010 Max 0.35 1.90-2.30
X6NiCrTiMoB25-15-2
Mechanical properties of grade X6NiCrTiMoB25-15-2
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)
547 (≥) 569 (≥) 33 31 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 112
Physical properties of grade X6NiCrTiMoB25-15-2
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
345 (≥) 437 (≥) 44 24 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 111
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
156 678 823
X6NiCrTiMoB25-15-2 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
X6NiCrTiMoB25-15-2 AFNOR France
Creep resisting steels, nickel and cobalt alloys

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