SAE-AISI M48 (T11348) Cobalt High-Speed Steel
Tool Steels
Property Overview
Density8.7g/cm³
Elastic Modulus200GPa
Tensile Strength890 to 2390MPa
Yield StrengthUnknown
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
C
1.4 to 1.5%
CR
3.5 to 4.0%
NI
0 to 0.3%
MO
4.8 to 5.5%
MN
0.15 to 0.4%
SI
0.15 to 0.4%
P
0 to 0.030%
S
0 to 0.030%
CU
0 to 0.25%
V
2.8 to 3.3%
CO
8.0 to 10%
W
9.5 to 10.5%
FE
63.8 to 69.8%
Mechanical
Elastic (Young's, Tensile) Modulus
200 GPa
Poisson's Ratio
0.29
Shear Modulus
78 GPa
Tensile Strength: Ultimate (UTS)
890 to 2390 MPa
Physical
Density
8.7 g/cm 3
Thermal
Latent Heat of Fusion
260 J/g
Melting Completion (Liquidus)
1670 °C
Melting Onset (Solidus)
1620 °C
Specific Heat Capacity
420 J/kg-K
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
26 to 71 points
Calculated
PREN (Pitting Resistance)
37
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
22 points
Strength to Weight: Axial
28 to 76 points
Strength to Weight: Bending
23 to 45 points
Environmental
Base Metal Price
48 % relative
Embodied Carbon
13 kg CO 2 /kg material
Embodied Energy
190 MJ/kg
Embodied Energy
190 MJ/kg 83 x 10 3 BTU/lb
Embodied Water
160 L/kg
Embodied Water
160 L/kg 19 gal/lb
Registered Designations & Aliases
SAE-AISI M48 (T11348) Cobalt High-Speed SteelT11348
Standards
ASTM A600 ASTM A600: Standard Specification for Tool Steel High Speed
ASTM A600 ASTM A600: Standard Specification for Tool Steel High Speed Tool Steels: Properties and Performance, Rafael A. Mesquita (editor), 2016