AWS E309L vs. AWS E308H
Both AWS E309L and AWS E308H are iron alloys. Both are furnished in the as-welded condition. They have a moderately high 93% of their average alloy composition in common.
For each property being compared, the top bar is AWS E309L and the bottom bar is AWS E308H.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
200 |
Elongation at Break, % | 34 | |
40 |
Poisson's Ratio | 0.27 | |
0.28 |
Shear Modulus, GPa | 79 | |
77 |
Tensile Strength: Ultimate (UTS), MPa | 580 | |
620 |
Thermal Properties
Latent Heat of Fusion, J/g | 300 | |
290 |
Melting Completion (Liquidus), °C | 1420 | |
1420 |
Melting Onset (Solidus), °C | 1370 | |
1380 |
Specific Heat Capacity, J/kg-K | 480 | |
480 |
Thermal Conductivity, W/m-K | 15 | |
16 |
Thermal Expansion, µm/m-K | 14 | |
14 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 2.1 | |
2.2 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
2.5 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 20 | |
16 |
Density, g/cm3 | 7.8 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 3.7 | |
3.2 |
Embodied Energy, MJ/kg | 52 | |
46 |
Embodied Water, L/kg | 180 | |
150 |
Common Calculations
PREN (Pitting Resistance) | 25 | |
21 |
Stiffness to Weight: Axial, points | 14 | |
14 |
Stiffness to Weight: Bending, points | 25 | |
25 |
Strength to Weight: Axial, points | 21 | |
22 |
Strength to Weight: Bending, points | 20 | |
21 |
Thermal Diffusivity, mm2/s | 4.0 | |
4.2 |
Thermal Shock Resistance, points | 15 | |
16 |
Alloy Composition
Carbon (C), % | 0 to 0.040 | |
0.040 to 0.080 |
Chromium (Cr), % | 22 to 25 | |
18 to 21 |
Copper (Cu), % | 0 to 0.75 | |
0 to 0.75 |
Iron (Fe), % | 55.9 to 65.5 | |
62.9 to 72.5 |
Manganese (Mn), % | 0.5 to 2.5 | |
0.5 to 2.5 |
Molybdenum (Mo), % | 0 to 0.75 | |
0 to 0.75 |
Nickel (Ni), % | 12 to 14 | |
9.0 to 11 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.040 |
Silicon (Si), % | 0 to 1.0 | |
0 to 1.0 |
Sulfur (S), % | 0 to 0.030 | |
0 to 0.030 |