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AWS ER70S-A1 vs. EN 1.6579 Steel

Both AWS ER70S-A1 and EN 1.6579 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 27 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 AWS ER70S-A1 and the bottom bar is EN 1.6579 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
11 to 14
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 590
850 to 980
Tensile Strength: Yield (Proof), MPa 450
600 to 910

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 50
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
3.7
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.7
Embodied Energy, MJ/kg 20
22
Embodied Water, L/kg 48
56

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
100 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 540
950 to 2210
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
30 to 35
Strength to Weight: Bending, points 20
25 to 28
Thermal Diffusivity, mm2/s 14
11
Thermal Shock Resistance, points 17
25 to 29

Alloy Composition

Carbon (C), % 0 to 0.12
0.32 to 0.38
Chromium (Cr), % 0
1.4 to 1.7
Copper (Cu), % 0 to 0.35
0
Iron (Fe), % 96.1 to 99.3
94.2 to 96.1
Manganese (Mn), % 0 to 1.3
0.6 to 1.0
Molybdenum (Mo), % 0.4 to 0.65
0.15 to 0.35
Nickel (Ni), % 0 to 0.2
1.4 to 1.7
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0.3 to 0.7
0 to 0.6
Sulfur (S), % 0 to 0.025
0 to 0.030
Residuals, % 0 to 0.5
0