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X7(8)CrNiMoBNb16-16Application:The high-temperature and high-strength steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy X7(8)CrNiMoBNb16-16DINGermany

Chemical composition%of the ladle analysis of gradeX7(8)CrNiMoBNb16-16

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Mo(%)B(%)Other(%)
0.04-0.10 0.30-0.60 0.30-0.60Max 0.045Max 0.030 15.5-17.5 15.5-17.5 15.5-17.50.05-0.1010×C%Max Nb+TaMax 1.20
X7(8)CrNiMoBNb16-16
Mechanical properties of gradeX7(8)CrNiMoBNb16-16
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)
963(≥)195(≥)444423Solution and Aging,Annealing,Ausaging,Q+T,etc341
Physical properties of gradeX7(8)CrNiMoBNb16-16
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
341(≥)428(≥)443314Solution and Aging,Annealing,Ausaging,Q+T,etc214
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
246769327
X7(8)CrNiMoBNb16-16Range 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

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