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Chemical composition % of the ladle analysis of grade ISO 40CrMo5 6

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％)
0.35-0.45 0.15-0.40 0.40-0.70 Max 0.035 Max 0.035 1.00-1.50 0.50-0.80
High temperature bainite and martensite steel ISO standard internal combustion engine
Mechanical properties of grade ISO 40CrMo5 6
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)
921 (≥) 198 (≥) 23 22 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 224
Physical properties of grade ISO 40CrMo5 6
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
987 (≥) 513 (≥) 33 34 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 141
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
716 531 753
ISO 40CrMo5 6 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
40CrMo5-6
Wrought steels for use at elevated temperatures in engines

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