ASTM A372 Grade M Steel vs. ASTM Grade HC Steel
Both ASTM A372 grade M steel and ASTM grade HC steel are iron alloys. They have 73% of their average alloy composition in common. There are 30 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 ASTM A372 grade M steel and the bottom bar is ASTM grade HC steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
200 |
Elongation at Break, % | 18 to 21 | |
6.0 |
Fatigue Strength, MPa | 450 to 520 | |
96 |
Poisson's Ratio | 0.29 | |
0.27 |
Shear Modulus, GPa | 73 | |
80 |
Tensile Strength: Ultimate (UTS), MPa | 810 to 910 | |
430 |
Tensile Strength: Yield (Proof), MPa | 660 to 770 | |
200 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
310 |
Maximum Temperature: Mechanical, °C | 450 | |
1100 |
Melting Completion (Liquidus), °C | 1460 | |
1410 |
Melting Onset (Solidus), °C | 1420 | |
1370 |
Specific Heat Capacity, J/kg-K | 470 | |
490 |
Thermal Conductivity, W/m-K | 46 | |
17 |
Thermal Expansion, µm/m-K | 13 | |
11 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 8.0 | |
2.2 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 9.1 | |
2.6 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 5.0 | |
14 |
Density, g/cm3 | 7.9 | |
7.6 |
Embodied Carbon, kg CO2/kg material | 2.0 | |
2.8 |
Embodied Energy, MJ/kg | 27 | |
40 |
Embodied Water, L/kg | 61 | |
170 |
Common Calculations
PREN (Pitting Resistance) | 3.4 | |
29 |
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 160 | |
21 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 1140 to 1580 | |
95 |
Stiffness to Weight: Axial, points | 13 | |
15 |
Stiffness to Weight: Bending, points | 24 | |
26 |
Strength to Weight: Axial, points | 29 to 32 | |
16 |
Strength to Weight: Bending, points | 24 to 27 | |
16 |
Thermal Diffusivity, mm2/s | 12 | |
4.5 |
Thermal Shock Resistance, points | 24 to 27 | |
14 |
Alloy Composition
Carbon (C), % | 0 to 0.23 | |
0 to 0.5 |
Chromium (Cr), % | 1.5 to 2.0 | |
26 to 30 |
Iron (Fe), % | 92.5 to 95.1 | |
61.9 to 74 |
Manganese (Mn), % | 0.2 to 0.4 | |
0 to 1.0 |
Molybdenum (Mo), % | 0.4 to 0.6 | |
0 to 0.5 |
Nickel (Ni), % | 2.8 to 3.9 | |
0 to 4.0 |
Phosphorus (P), % | 0 to 0.015 | |
0 to 0.040 |
Silicon (Si), % | 0 to 0.3 | |
0 to 2.0 |
Sulfur (S), % | 0 to 0.010 | |
0 to 0.040 |
Vanadium (V), % | 0 to 0.080 | |
0 |