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AWS E80C-B2 vs. AWS E70C-B2L

Both AWS E80C-B2 and AWS E70C-B2L are iron alloys. Both are furnished in the post-weld heat treated (PWHT) condition. Their average alloy composition is basically identical.

For each property being compared, the top bar is AWS E80C-B2 and the bottom bar is AWS E70C-B2L.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
21
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 630
580
Tensile Strength: Yield (Proof), MPa 530
460

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
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 3.0
3.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.6
Embodied Energy, MJ/kg 22
22
Embodied Water, L/kg 53
54

Common Calculations

PREN (Pitting Resistance) 3.0
3.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 740
550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
20
Strength to Weight: Bending, points 21
20
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 18
17

Alloy Composition


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Carbon (C), % 0.050 to 0.12
0 to 0.050
Chromium (Cr), % 1.0 to 1.5
1.0 to 1.5
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 95.3 to 97.9
95.1 to 98
Manganese (Mn), % 0.4 to 1.0
0.4 to 1.0
Molybdenum (Mo), % 0.4 to 0.65
0.4 to 0.65
Nickel (Ni), % 0 to 0.2
0 to 0.2
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0.25 to 0.6
0.25 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0 to 0.030
0 to 0.030
Residuals, % 0 to 0.5
0 to 0.5