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AWS ER90S-B3 vs. ASTM Grade LC9 Steel

Both AWS ER90S-B3 and ASTM grade LC9 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS ER90S-B3 and the bottom bar is ASTM grade LC9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
22
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 690
660
Tensile Strength: Yield (Proof), MPa 620
590

Thermal Properties

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
10

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
8.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.8
2.3
Embodied Energy, MJ/kg 24
31
Embodied Water, L/kg 60
65

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
920
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
23
Strength to Weight: Bending, points 22
21
Thermal Shock Resistance, points 20
20

Alloy Composition


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Carbon (C), % 0.070 to 0.12
0 to 0.13
Chromium (Cr), % 2.3 to 2.7
0 to 0.5
Copper (Cu), % 0 to 0.35
0 to 0.3
Iron (Fe), % 93.5 to 95.9
87.4 to 91.5
Manganese (Mn), % 0.4 to 0.7
0 to 0.9
Molybdenum (Mo), % 0.9 to 1.2
0 to 0.2
Nickel (Ni), % 0 to 0.2
8.5 to 10
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.4 to 0.7
0 to 0.45
Sulfur (S), % 0 to 0.025
0 to 0.045
Vanadium (V), % 0
0 to 0.030
Residuals, % 0 to 0.5
0