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SAE-AISI H14 Steel vs. ASTM A302 Alloy Steel

Both SAE-AISI H14 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 (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H14 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 75
73
Tensile Strength: Ultimate (UTS), MPa 710 to 2030
590 to 620

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1530
1460
Melting Onset (Solidus), °C 1490
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 35
39 to 51
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 10
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.4 to 3.0
Density, g/cm3 8.1
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 2.7
1.5 to 1.6
Embodied Energy, MJ/kg 39
20 to 21
Embodied Water, L/kg 73
48 to 50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 69
21 to 22
Strength to Weight: Bending, points 22 to 44
20 to 21
Thermal Diffusivity, mm2/s 9.3
10 to 14
Thermal Shock Resistance, points 24 to 68
17 to 18