Hardened M44 Tool Steel
Tool Steels
Property Overview
Density8.4g/cm³
Elastic Modulus200GPa
Tensile Strength2290MPa
Yield StrengthUnknown
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
C
1.1 to 1.2%
CR
4.0 to 4.8%
NI
0 to 0.3%
MO
6.0 to 7.0%
MN
0.2 to 0.4%
SI
0.3 to 0.55%
P
0 to 0.030%
S
0 to 0.030%
CU
0 to 0.25%
V
1.9 to 2.2%
CO
11 to 12.3%
W
5.0 to 5.8%
FE
65.3 to 70.6%
Mechanical
Elastic (Young's, Tensile) Modulus
200 GPa
Poisson's Ratio
0.29
Shear Modulus
78 GPa
Tensile Strength: Ultimate (UTS)
2290 MPa
Hardness
Rockwell C Hardness
71
Physical
Density
8.4 g/cm 3
Thermal
Latent Heat of Fusion
270 J/g
Melting Completion (Liquidus)
1590 °C
Melting Onset (Solidus)
1540 °C
Specific Heat Capacity
440 J/kg-K
Thermal Conductivity
14 W/m-K
Thermal Diffusivity
3.7 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
70 points
Calculated
PREN (Pitting Resistance)
35
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
23 points
Strength to Weight: Axial
75 points
Strength to Weight: Bending
46 points
Environmental
Base Metal Price
43 % relative
Embodied Carbon
9.9 kg CO 2 /kg material
Embodied Energy
150 MJ/kg
Embodied Energy
150 MJ/kg 63 x 10 3 BTU/lb
Embodied Water
170 L/kg
Embodied Water
170 L/kg 20 gal/lb
Registered Designations & Aliases
Hardened M44 Tool Steel
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, 5th ed., George Roberts et al., 1998 Tool Steels: Properties and Performance, Rafael A. Mesquita (editor), 2016