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AWS E309H vs. AWS E316L

Both AWS E309H and AWS E316L are iron alloys. Both are furnished in the as-welded condition. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is AWS E309H and the bottom bar is AWS E316L.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
34
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 620
550

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 14
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 20
20
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.7
4.0
Embodied Energy, MJ/kg 52
55
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 25
27
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
19
Strength to Weight: Bending, points 21
19
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0.040 to 0.15
0 to 0.040
Chromium (Cr), % 22 to 25
17 to 20
Copper (Cu), % 0 to 0.75
0 to 0.75
Iron (Fe), % 55.8 to 65.5
58.6 to 69.5
Manganese (Mn), % 0.5 to 2.5
0.5 to 2.5
Molybdenum (Mo), % 0 to 0.75
2.0 to 3.0
Nickel (Ni), % 12 to 14
11 to 14
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