Annealed P20 Tool Steel
Tool Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength540MPa
Yield Strength290MPa
Brinell Hardness160HB
Maximum Service TemperatureUnknown
Chemical Composition
C
0.28 to 0.4%
CR
0.4 to 2.0%
MO
0.3 to 0.55%
MN
0.35 to 0.71%
SI
0.2 to 0.8%
P
0 to 0.030%
S
0 to 0.030%
CU
0 to 0.25%
FE
95.2 to 98.5%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
23 %
Fatigue Strength
210 MPa
Poisson's Ratio
0.29
Shear Modulus
73 GPa
Shear Strength
340 MPa
Tensile Strength: Ultimate (UTS)
540 MPa
Tensile Strength: Yield (Proof)
290 MPa
Hardness
Brinell Hardness
160
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
45 W/m-K
Thermal Diffusivity
12 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
18 points
Electrical
Electrical Conductivity: Equal Volume
7.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.5 % IACS
Calculated
PREN (Pitting Resistance)
2.6
Resilience: Ultimate (Unit Rupture Work)
100 MJ/m 3
Resilience: Unit (Modulus of Resilience)
230 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
19 points
Strength to Weight: Bending
19 points
Environmental
Base Metal Price
2.8 % relative
Embodied Carbon
1.6 kg CO 2 /kg material
Embodied Energy
21 MJ/kg
Embodied Energy
21 MJ/kg 8.9 x 10 3 BTU/lb
Embodied Water
52 L/kg
Embodied Water
52 L/kg 6.2 gal/lb
Registered Designations & Aliases
Annealed P20 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