SAE-AISI H43 Steel vs. ASTM A231 Spring Steel
Both SAE-AISI H43 steel and ASTM A231 spring steel are iron alloys. They have 87% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI H43 steel and the bottom bar is ASTM A231 spring 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 | |
73 |
Tensile Strength: Ultimate (UTS), MPa | 710 to 2140 | |
1790 |
Thermal Properties
Latent Heat of Fusion, J/g | 270 | |
250 |
Melting Completion (Liquidus), °C | 1530 | |
1460 |
Melting Onset (Solidus), °C | 1480 | |
1410 |
Specific Heat Capacity, J/kg-K | 460 | |
470 |
Thermal Conductivity, W/m-K | 30 | |
52 |
Thermal Expansion, µm/m-K | 12 | |
13 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 14 | |
2.3 |
Density, g/cm3 | 7.9 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 8.2 | |
2.0 |
Embodied Energy, MJ/kg | 120 | |
28 |
Embodied Water, L/kg | 100 | |
51 |
Common Calculations
Stiffness to Weight: Axial, points | 14 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 25 to 75 | |
64 |
Strength to Weight: Bending, points | 22 to 46 | |
42 |
Thermal Diffusivity, mm2/s | 8.3 | |
14 |
Thermal Shock Resistance, points | 21 to 62 | |
53 |
Alloy Composition
Carbon (C), % | 0.5 to 0.65 | |
0.48 to 0.53 |
Chromium (Cr), % | 3.8 to 4.5 | |
0.8 to 1.1 |
Iron (Fe), % | 83.2 to 85.9 | |
96.7 to 97.7 |
Manganese (Mn), % | 0.15 to 0.4 | |
0.7 to 0.9 |
Molybdenum (Mo), % | 7.8 to 8.5 | |
0 |
Phosphorus (P), % | 0 to 0.030 | |
0 to 0.040 |
Silicon (Si), % | 0.2 to 0.45 | |
0.15 to 0.35 |
Sulfur (S), % | 0 to 0.030 | |
0 to 0.040 |
Vanadium (V), % | 1.8 to 2.2 | |
0.15 to 0.3 |