SAE-AISI 9310 Steel vs. ASTM A387 Grade 9 Steel
Both SAE-AISI 9310 steel and ASTM A387 grade 9 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 9310 steel and the bottom bar is ASTM A387 grade 9 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 540 to 610 | |
| 150 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 17 to 19 | |
| 20 to 21 |
| Fatigue Strength, MPa | 300 to 390 | |
| 160 to 240 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 75 |
| Shear Strength, MPa | 510 to 570 | |
| 310 to 380 |
| Tensile Strength: Ultimate (UTS), MPa | 820 to 910 | |
| 500 to 600 |
| Tensile Strength: Yield (Proof), MPa | 450 to 570 | |
| 230 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 440 | |
| 600 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 48 | |
| 26 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.7 | |
| 9.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.9 | |
| 10 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 4.4 | |
| 6.5 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 2.1 |
| Embodied Energy, MJ/kg | 24 | |
| 28 |
| Embodied Water, L/kg | 57 | |
| 87 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 150 | |
| 83 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 540 to 860 | |
| 140 to 310 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 29 to 32 | |
| 18 to 21 |
| Strength to Weight: Bending, points | 25 to 27 | |
| 18 to 20 |
| Thermal Diffusivity, mm2/s | 13 | |
| 6.9 |
| Thermal Shock Resistance, points | 24 to 27 | |
| 14 to 17 |
Alloy Composition
| Carbon (C), % | 0.080 to 0.13 | |
| 0 to 0.15 |
| Chromium (Cr), % | 1.0 to 1.4 | |
| 8.0 to 10 |
| Iron (Fe), % | 93.8 to 95.2 | |
| 87.1 to 90.8 |
| Manganese (Mn), % | 0.45 to 0.65 | |
| 0.3 to 0.6 |
| Molybdenum (Mo), % | 0.080 to 0.15 | |
| 0.9 to 1.1 |
| Nickel (Ni), % | 3.0 to 3.5 | |
| 0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.025 |
| Silicon (Si), % | 0.2 to 0.35 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.012 | |
| 0 to 0.025 |
| Vanadium (V), % | 0 | |
| 0 to 0.040 |