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ISO X21Cr13 Application:High temperature bainite and martensite steel ISO standard internal combustion engine
Category Type Steel grade Standard Country
Grades Special Alloy ISO X21Cr13 ISO ISO

Chemical composition % of the ladle analysis of grade ISO X21Cr13

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％)
0.09-0.15 Max 1.00 Max 1.00 Max 0.04 Max 0.03 11.5-14.0 Max 1.00
High temperature bainite and martensite steel ISO standard internal combustion engine
Mechanical properties of grade ISO 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)
168 (≥) 536 (≥) 43 21 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 144
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
966 (≥) 629 (≥) 43 21 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 213
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
574 172 463
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
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
X21Cr13 ISO ISO
Wrought steels for use at elevated temperatures in engines
X21Cr13 ISO ISO
Tools high alloyed Cr steel

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