ASTM A225 Steel vs. ASTM A372 Grade M Steel
Both ASTM A225 steel and ASTM A372 grade M steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is ASTM A225 steel and the bottom bar is ASTM A372 grade M steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 250 | |
| 240 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 21 to 23 | |
| 18 to 21 |
| Fatigue Strength, MPa | 330 to 390 | |
| 450 to 520 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 390 to 520 | |
| 510 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 620 to 830 | |
| 810 to 910 |
| Tensile Strength: Yield (Proof), MPa | 460 to 550 | |
| 660 to 770 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 450 |
| 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 | 52 | |
| 46 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 8.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 9.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 5.0 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 2.0 |
| Embodied Energy, MJ/kg | 24 to 25 | |
| 27 |
| Embodied Water, L/kg | 48 | |
| 61 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 170 | |
| 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 580 to 820 | |
| 1140 to 1580 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 22 to 29 | |
| 29 to 32 |
| Strength to Weight: Bending, points | 21 to 25 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 14 | |
| 12 |
| Thermal Shock Resistance, points | 18 to 24 | |
| 24 to 27 |