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O6Application:Alloy tool steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy O6ASTMUSA

Chemical composition%of the ladle analysis of gradeO6

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Mo(%)
1.25~1.550.55~1.500.30~1.10≤0.030≤0.030≤0.300.20~0.30
O6
Mechanical properties of gradeO6
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)
154(≥)716(≥)434344Solution and Aging,Annealing,Ausaging,Q+T,etc324
Physical properties of gradeO6
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
581(≥)966(≥)221234Solution and Aging,Annealing,Ausaging,Q+T,etc442
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
679432435
O6Range 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
Cross Reference Table(Equivalent Grade)
GradeStandardCountryApplication
34CrNiMo6ASTMUSA
Steels for quenching and tempering for construction purposes - Technical delivery conditions
O6ASTMUSA
Oil-Hardening Tool Steel
102CrMo6ASTMUSA
Alloyed CrMo steel
45SCD6, 46SiCrMo6, 1.8062ASTMUSA
wrought steels used in aeronautical constructions
34CrNiMo6ASTMUSA
Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

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