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AWS E3155 vs. AWS E312

Both AWS E3155 and AWS E312 are iron alloys. Both are furnished in the as-welded condition. They have 63% of their average alloy composition in common. There are 21 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 AWS E3155 and the bottom bar is AWS E312.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
25
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 81
80
Tensile Strength: Ultimate (UTS), MPa 770
740

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1410
1360
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 70
20
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 7.7
3.6
Embodied Energy, MJ/kg 110
52
Embodied Water, L/kg 300
200

Common Calculations

PREN (Pitting Resistance) 35
31
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
27
Strength to Weight: Bending, points 22
24
Thermal Shock Resistance, points 20
18

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.15
Chromium (Cr), % 20 to 22.5
28 to 32
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0 to 0.75
0 to 0.75
Iron (Fe), % 23.3 to 36.3
52.3 to 63.5
Manganese (Mn), % 1.0 to 2.5
0.5 to 2.5
Molybdenum (Mo), % 2.5 to 3.5
0 to 0.75
Nickel (Ni), % 19 to 21
8.0 to 10.5
Niobium (Nb), % 0.75 to 1.3
0
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
Tungsten (W), % 2.0 to 3.0
0