Hardened P4 Tool Steel
Tool Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength1980MPa
Yield StrengthUnknown
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
C
0 to 0.12%
CR
4.0 to 5.3%
MO
0.4 to 1.0%
MN
0.2 to 0.6%
SI
0.1 to 0.4%
P
0 to 0.030%
S
0 to 0.030%
CU
0 to 0.25%
FE
92.3 to 95.3%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Poisson's Ratio
0.29
Shear Modulus
74 GPa
Tensile Strength: Ultimate (UTS)
1980 MPa
Hardness
Rockwell C Hardness
61
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
260 J/g
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
41 W/m-K
Thermal Diffusivity
11 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
64 points
Electrical
Electrical Conductivity: Equal Volume
8.1 % IACS
Electrical Conductivity: Equal Weight (Specific)
9.3 % IACS
Calculated
PREN (Pitting Resistance)
7.0
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
70 points
Strength to Weight: Bending
45 points
Environmental
Base Metal Price
4.4 % relative
Embodied Carbon
1.8 kg CO 2 /kg material
Embodied Energy
23 MJ/kg
Embodied Energy
23 MJ/kg 10 x 10 3 BTU/lb
Embodied Water
68 L/kg
Embodied Water
68 L/kg 8.1 gal/lb
Registered Designations & Aliases
Hardened P4 Tool Steel
Standards
ASTM A681 ASTM A681: Standard Specification for Tool Steels Alloy
ASTM A681 ASTM A681: Standard Specification for Tool Steels Alloy Tool Steels, 5th ed., George Roberts et al., 1998 Tool Steels: Properties and Performance, Rafael A. Mesquita (editor), 2016