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EN 1.7779 Steel vs. AWS ER90S-B3

Both EN 1.7779 steel and AWS ER90S-B3 are iron alloys. They have a very high 99% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 ER90S-B3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
19
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 810
690
Tensile Strength: Yield (Proof), MPa 660
620

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
4.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.8
Embodied Energy, MJ/kg 41
24
Embodied Water, L/kg 64
60

Common Calculations

PREN (Pitting Resistance) 5.0
6.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
130
Resilience: Unit (Modulus of Resilience), kJ/m3 1150
1000
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
25
Strength to Weight: Bending, points 25
22
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 23
20

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.17 to 0.23
0.070 to 0.12
Chromium (Cr), % 3.0 to 3.3
2.3 to 2.7
Copper (Cu), % 0 to 0.3
0 to 0.35
Iron (Fe), % 93.8 to 95.4
93.5 to 95.9
Manganese (Mn), % 0.3 to 0.5
0.4 to 0.7
Molybdenum (Mo), % 0.5 to 0.6
0.9 to 1.2
Nickel (Ni), % 0 to 0.3
0 to 0.2
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0.4 to 0.7
Sulfur (S), % 0 to 0.010
0 to 0.025
Vanadium (V), % 0.45 to 0.55
0
Residuals, % 0
0 to 0.5