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EN 1.7779 Steel vs. AWS E3155

Both EN 1.7779 steel and AWS E3155 are iron alloys. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.7779 steel and the bottom bar is AWS E3155.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 16
23
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 810
770

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 39
13
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
70
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 2.8
7.7
Embodied Energy, MJ/kg 41
110
Embodied Water, L/kg 64
300

Common Calculations

PREN (Pitting Resistance) 5.0
35
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
26
Strength to Weight: Bending, points 25
22
Thermal Diffusivity, mm2/s 11
3.3
Thermal Shock Resistance, points 23
20

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.17 to 0.23
0 to 0.1
Chromium (Cr), % 3.0 to 3.3
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 0 to 0.3
0 to 0.75
Iron (Fe), % 93.8 to 95.4
23.3 to 36.3
Manganese (Mn), % 0.3 to 0.5
1.0 to 2.5
Molybdenum (Mo), % 0.5 to 0.6
2.5 to 3.5
Nickel (Ni), % 0 to 0.3
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 0
2.0 to 3.0
Vanadium (V), % 0.45 to 0.55
0