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ASTM Grade LC3 Steel vs. AWS BAu-3

ASTM grade LC3 steel belongs to the iron alloys classification, while AWS BAu-3 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is ASTM grade LC3 steel and the bottom bar is AWS BAu-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.37
Shear Modulus, GPa 73
41
Tensile Strength: Ultimate (UTS), MPa 570
220

Thermal Properties

Latent Heat of Fusion, J/g 250
160
Melting Completion (Liquidus), °C 1460
1030
Melting Onset (Solidus), °C 1420
970
Specific Heat Capacity, J/kg-K 470
300
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Density, g/cm3 7.9
13

Common Calculations

Stiffness to Weight: Axial, points 13
5.0
Stiffness to Weight: Bending, points 24
13
Strength to Weight: Axial, points 20
4.9
Strength to Weight: Bending, points 19
6.4
Thermal Shock Resistance, points 17
8.7

Alloy Composition

Carbon (C), % 0 to 0.15
0
Copper (Cu), % 0
60.9 to 63
Gold (Au), % 0
34.5 to 35.5
Iron (Fe), % 94.4 to 96.5
0
Manganese (Mn), % 0.5 to 0.8
0
Nickel (Ni), % 3.0 to 4.0
2.5 to 3.5
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.045
0
Residuals, % 0
0 to 0.15