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SAE-AISI H43 Steel vs. SAE-AISI O2 Steel

Both SAE-AISI H43 steel and SAE-AISI O2 steel are iron alloys. They have 86% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H43 steel and the bottom bar is SAE-AISI O2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
72
Tensile Strength: Ultimate (UTS), MPa 710 to 2140
640 to 2050

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1530
1450
Melting Onset (Solidus), °C 1480
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 30
43
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 14
2.4
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 8.2
1.8
Embodied Energy, MJ/kg 120
26
Embodied Water, L/kg 100
50

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25 to 75
23 to 73
Strength to Weight: Bending, points 22 to 46
21 to 46
Thermal Diffusivity, mm2/s 8.3
12
Thermal Shock Resistance, points 21 to 62
22 to 70

Alloy Composition

Carbon (C), % 0.5 to 0.65
0.85 to 1.0
Chromium (Cr), % 3.8 to 4.5
0 to 0.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 83.2 to 85.9
95 to 97.8
Manganese (Mn), % 0.15 to 0.4
1.4 to 1.8
Molybdenum (Mo), % 7.8 to 8.5
0 to 0.3
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.45
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 1.8 to 2.2
0 to 0.3

Comparable Variants