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EN 1.7108 Steel vs. AWS E33-31

Both EN 1.7108 steel and AWS E33-31 are iron alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.7108 steel and the bottom bar is AWS E33-31.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 72
81
Tensile Strength: Ultimate (UTS), MPa 670 to 2070
810

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Melting Completion (Liquidus), °C 1430
1380
Melting Onset (Solidus), °C 1390
1330
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
14

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
36
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 1.5
6.0
Embodied Energy, MJ/kg 20
86
Embodied Water, L/kg 47
260

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 75
28
Strength to Weight: Bending, points 22 to 47
24
Thermal Shock Resistance, points 20 to 63
19

Alloy Composition

Carbon (C), % 0.57 to 0.65
0 to 0.030
Chromium (Cr), % 0.2 to 0.45
31 to 35
Copper (Cu), % 0
0.4 to 0.8
Iron (Fe), % 95.9 to 96.9
24.7 to 34.8
Manganese (Mn), % 0.7 to 1.0
2.5 to 4.0
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 0
30 to 32
Nitrogen (N), % 0
0.3 to 0.5
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 1.6 to 2.0
0 to 0.9
Sulfur (S), % 0 to 0.025
0 to 0.010