ASTM A225 Grade C vs. ASTM A225 Grade D
Both ASTM A225 grade C and ASTM A225 grade D are variants of the same material.
For each property being compared, the top bar is ASTM A225 grade C and the bottom bar is ASTM A225 grade D.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 250 | |
| 190 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 23 | |
| 21 |
| Fatigue Strength, MPa | 390 | |
| 330 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 520 | |
| 390 |
| Tensile Strength: Ultimate (UTS), MPa | 830 | |
| 620 |
| Tensile Strength: Yield (Proof), MPa | 550 | |
| 460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 400 |
| 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 | |
| 52 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 2.3 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 1.8 |
| Embodied Energy, MJ/kg | 25 | |
| 24 |
| Embodied Water, L/kg | 48 | |
| 48 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 170 | |
| 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 820 | |
| 580 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 29 | |
| 22 |
| Strength to Weight: Bending, points | 25 | |
| 21 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 24 | |
| 18 |
Alloy Composition
| Carbon (C), % | 0 to 0.25 | |
| 0 to 0.2 |
| Iron (Fe), % | 96.6 to 99.39 | |
| 96.4 to 99.47 |
| Manganese (Mn), % | 0 to 1.7 | |
| 0 to 1.8 |
| Nickel (Ni), % | 0.37 to 0.73 | |
| 0.37 to 0.73 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.035 |
| Silicon (Si), % | 0.13 to 0.45 | |
| 0.080 to 0.56 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.035 |
| Vanadium (V), % | 0.11 to 0.2 | |
| 0.080 to 0.2 |