ASTM A514 Steel vs. ASTM A302 Alloy Steel
Both ASTM A514 steel and ASTM A302 alloy steel are iron alloys.
For each property being compared, the top bar is ASTM A514 steel and the bottom bar is ASTM A302 alloy steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 240 to 250 | |
180 to 190 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Elongation at Break, % | 18 to 21 | |
20 to 23 |
Fatigue Strength, MPa | 470 to 540 | |
250 to 280 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 73 | |
73 |
Shear Strength, MPa | 490 to 520 | |
370 to 390 |
Tensile Strength: Ultimate (UTS), MPa | 790 to 830 | |
590 to 620 |
Tensile Strength: Yield (Proof), MPa | 690 to 770 | |
350 to 390 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 to 260 | |
250 |
Maximum Temperature: Mechanical, °C | 400 to 440 | |
410 |
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 | 37 to 51 | |
39 to 51 |
Thermal Expansion, µm/m-K | 13 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.2 to 7.6 | |
7.2 to 7.4 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 to 8.8 | |
8.2 to 8.4 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 2.3 to 3.8 | |
2.4 to 3.0 |
Density, g/cm3 | 7.8 to 7.9 | |
7.8 to 7.9 |
Embodied Carbon, kg CO2/kg material | 1.6 to 1.8 | |
1.5 to 1.6 |
Embodied Energy, MJ/kg | 21 to 25 | |
20 to 21 |
Embodied Water, L/kg | 48 to 57 | |
48 to 50 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 170 | |
110 to 120 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 1280 to 1590 | |
330 to 410 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 28 to 29 | |
21 to 22 |
Strength to Weight: Bending, points | 24 to 25 | |
20 to 21 |
Thermal Diffusivity, mm2/s | 10 to 14 | |
10 to 14 |
Thermal Shock Resistance, points | 23 to 24 | |
17 to 18 |