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M48Application:Molybdenum series High-speed tool steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy M48ASTMUSA

Chemical composition%of the ladle analysis of gradeM48

C(%)Si(%)Mn(%)P(%)Cr(%)Mo(%)V(%)W(%)Co(%)
1.42-1.520.15-0.400.15-0.40MAX 0.0303.50-4.004.75-5.502.75-3.259.50-10.58.00-10.0
M48
Mechanical properties of gradeM48
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)
644(≥)631(≥)233232Solution and Aging,Annealing,Ausaging,Q+T,etc444
Physical properties of gradeM48
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
223(≥)653(≥)313432Solution and Aging,Annealing,Ausaging,Q+T,etc141
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
355588797
M48Range 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
M48ASTMUSA
High-Speed Tool Steel

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