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SAE-AISI P2 Steel vs. ASTM A302 Alloy Steel

Both SAE-AISI P2 steel and ASTM A302 alloy steel are iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P2 steel and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 330 to 1980
590 to 620

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 46
39 to 51
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.7
2.4 to 3.0
Density, g/cm3 7.9
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 1.5
1.5 to 1.6
Embodied Energy, MJ/kg 20
20 to 21
Embodied Water, L/kg 51
48 to 50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 12 to 70
21 to 22
Strength to Weight: Bending, points 14 to 45
20 to 21
Thermal Diffusivity, mm2/s 12
10 to 14
Thermal Shock Resistance, points 11 to 65
17 to 18