Hardened M4 Tool Steel
Tool Steels
Property Overview
Density8.3g/cm³
Elastic Modulus200GPa
Tensile Strength2150MPa
Yield StrengthUnknown
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
C
1.3 to 1.4%
CR
3.8 to 4.8%
NI
0 to 0.3%
MO
4.3 to 5.5%
MN
0.15 to 0.4%
SI
0.2 to 0.45%
P
0 to 0.030%
S
0 to 0.030%
CU
0 to 0.25%
V
3.8 to 4.5%
W
5.3 to 6.5%
FE
75.9 to 81.4%
Mechanical
Elastic (Young's, Tensile) Modulus
200 GPa
Poisson's Ratio
0.29
Shear Modulus
76 GPa
Tensile Strength: Ultimate (UTS)
2150 MPa
Hardness
Rockwell C Hardness
66
Physical
Density
8.3 g/cm 3
Thermal
Latent Heat of Fusion
260 J/g
Melting Completion (Liquidus)
1610 °C
Melting Onset (Solidus)
1560 °C
Specific Heat Capacity
440 J/kg-K
Thermal Conductivity
25 W/m-K
Thermal Diffusivity
6.9 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
68 points
Calculated
PREN (Pitting Resistance)
30
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
23 points
Strength to Weight: Axial
72 points
Strength to Weight: Bending
45 points
Environmental
Base Metal Price
25 % relative
Embodied Carbon
14 kg CO 2 /kg material
Embodied Energy
210 MJ/kg
Embodied Energy
210 MJ/kg 91 x 10 3 BTU/lb
Embodied Water
110 L/kg
Embodied Water
110 L/kg 13 gal/lb
Registered Designations & Aliases
Hardened M4 Tool Steel
Standards
ASTM A600 ASTM A600: Standard Specification for Tool Steel High Speed
SAE J437 SAE J437: Selection and Heat Treatment of Tool and Die Steels
SAE J437 SAE J437: Selection and Heat Treatment of Tool and Die Steels ASTM A600: Standard Specification for Tool Steel High Speed Sintering of Advanced Materials: Fundamentals and Processes, Zhigang Zak Fang (editor), 2010 Tool Steels, 5th ed., George Roberts et al., 1998 Tool Steels: Properties and Performance, Rafael A. Mesquita (editor), 2016