**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 gradeISO 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 gradeISO X21Cr13
Proof strength R_p0.2(MPa)	Tensile strength R_m(MPa)	Impact energy KV(J)	Elongation at fracture A(%)	Reduction in cross section on fracture Z(%)	As-Heat-Treated Condition	Brinell hardness(HBW)
321(≥)	685(≥)	44	31	33	Solution and Aging,Annealing,Ausaging,Q+T,etc	222

Physical properties of gradeISO 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
421(≥)	558(≥)	34	31	42	Solution and Aging,Annealing,Ausaging,Q+T,etc	424
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0)N/mm2	Creep rupture strength (10000h) (Rp1,0)N/mm2
575	837	214

ISO X21Cr13Range of products
Product type	Products	Dimension	Processes	Deliver Status
Plates/Sheets	Plates/Sheets	0.08-200mm(T)WL	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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