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AWS E80C-B2 vs. AWS ER90S-B9

Both AWS E80C-B2 and AWS ER90S-B9 are iron alloys. Both are furnished in the post-weld heat treated (PWHT) condition. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is AWS E80C-B2 and the bottom bar is AWS ER90S-B9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
18
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 630
690
Tensile Strength: Yield (Proof), MPa 530
470

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
25
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.0
7.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
2.6
Embodied Energy, MJ/kg 22
37
Embodied Water, L/kg 53
91

Common Calculations

PREN (Pitting Resistance) 3.0
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 740
570
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
25
Strength to Weight: Bending, points 21
22
Thermal Diffusivity, mm2/s 11
6.9
Thermal Shock Resistance, points 18
19

Alloy Composition


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Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0.050 to 0.12
0.070 to 0.13
Chromium (Cr), % 1.0 to 1.5
8.0 to 10.5
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 95.3 to 97.9
84.4 to 90.7
Manganese (Mn), % 0.4 to 1.0
0 to 1.2
Molybdenum (Mo), % 0.4 to 0.65
0.85 to 1.2
Nickel (Ni), % 0 to 0.2
0 to 0.8
Niobium (Nb), % 0
0.020 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.025
0 to 0.010
Silicon (Si), % 0.25 to 0.6
0.15 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Vanadium (V), % 0 to 0.030
0.15 to 0.3
Residuals, % 0 to 0.5
0 to 0.5