ASTM Grade HE Steel vs. AWS E308Mo
Both ASTM grade HE steel and AWS E308Mo are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is ASTM grade HE steel and the bottom bar is AWS E308Mo.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
200 |
Elongation at Break, % | 10 | |
40 |
Poisson's Ratio | 0.27 | |
0.28 |
Shear Modulus, GPa | 79 | |
78 |
Tensile Strength: Ultimate (UTS), MPa | 670 | |
620 |
Thermal Properties
Latent Heat of Fusion, J/g | 310 | |
290 |
Melting Completion (Liquidus), °C | 1400 | |
1440 |
Melting Onset (Solidus), °C | 1360 | |
1400 |
Specific Heat Capacity, J/kg-K | 490 | |
470 |
Thermal Conductivity, W/m-K | 14 | |
16 |
Thermal Expansion, µm/m-K | 17 | |
14 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 2.1 | |
2.0 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
2.3 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 19 | |
19 |
Density, g/cm3 | 7.7 | |
7.9 |
Embodied Carbon, kg CO2/kg material | 3.5 | |
3.8 |
Embodied Energy, MJ/kg | 50 | |
53 |
Embodied Water, L/kg | 190 | |
160 |
Common Calculations
PREN (Pitting Resistance) | 29 | |
28 |
Stiffness to Weight: Axial, points | 15 | |
14 |
Stiffness to Weight: Bending, points | 25 | |
25 |
Strength to Weight: Axial, points | 24 | |
22 |
Strength to Weight: Bending, points | 22 | |
20 |
Thermal Diffusivity, mm2/s | 3.6 | |
4.2 |
Thermal Shock Resistance, points | 14 | |
16 |
Alloy Composition
Carbon (C), % | 0.2 to 0.5 | |
0 to 0.080 |
Chromium (Cr), % | 26 to 30 | |
18 to 21 |
Copper (Cu), % | 0 | |
0 to 0.75 |
Iron (Fe), % | 53.9 to 65.8 | |
59.6 to 70.5 |
Manganese (Mn), % | 0 to 2.0 | |
0.5 to 2.5 |
Molybdenum (Mo), % | 0 to 0.5 | |
2.0 to 3.0 |
Nickel (Ni), % | 8.0 to 11 | |
9.0 to 12 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.040 |
Silicon (Si), % | 0 to 2.0 | |
0 to 1.0 |
Sulfur (S), % | 0 to 0.040 | |
0 to 0.030 |