ISO X21Cr13 Special Alloy

Chemical composition%of the ladle analysis of gradeISO X21Cr13

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)
0.09-0.15Max 1.00Max 1.00Max 0.04Max 0.0311.5-14.0Max 1.00
High temperature bainite and martensite steel ISO standard internal combustion engine

Mechanical properties of gradeISO X21Cr13

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)
613(≥) 965(≥) 22 23 31 Solution and Aging,Annealing,Ausaging,Q+T,etc 342

Physical properties of grade ISO X21Cr13

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
863(≥) 727(≥) 24 11 24 Solution and Aging,Annealing,Ausaging,Q+T,etc 443
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
954 842 899

ISO X21Cr13 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