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ASTM Grade LC9 Steel vs. AWS BVAu-7

ASTM grade LC9 steel belongs to the iron alloys classification, while AWS BVAu-7 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is ASTM grade LC9 steel and the bottom bar is AWS BVAu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
130
Poisson's Ratio 0.29
0.38
Shear Modulus, GPa 73
45
Tensile Strength: Ultimate (UTS), MPa 660
200

Thermal Properties

Latent Heat of Fusion, J/g 260
140
Melting Completion (Liquidus), °C 1450
1120
Melting Onset (Solidus), °C 1410
1100
Specific Heat Capacity, J/kg-K 470
240
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Density, g/cm3 7.9
15

Common Calculations

Stiffness to Weight: Axial, points 13
4.7
Stiffness to Weight: Bending, points 24
11
Strength to Weight: Axial, points 23
3.7
Strength to Weight: Bending, points 21
5.1
Thermal Shock Resistance, points 20
8.9

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0 to 0.13
0 to 0.0050
Chromium (Cr), % 0 to 0.5
0
Cobalt (Co), % 0
0 to 0.060
Copper (Cu), % 0 to 0.3
0
Gold (Au), % 0
49.5 to 50.5
Iron (Fe), % 87.4 to 91.5
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0 to 0.9
0
Molybdenum (Mo), % 0 to 0.2
0
Nickel (Ni), % 8.5 to 10
24.5 to 25.5
Palladium (Pd), % 0
23.9 to 26
Phosphorus (P), % 0 to 0.040
0 to 0.0020
Silicon (Si), % 0 to 0.45
0
Sulfur (S), % 0 to 0.045
0
Vanadium (V), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.0010