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Grade FDSiCr Steel vs. AWS BAu-6

Grade FDSiCr steel belongs to the iron alloys classification, while AWS BAu-6 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is grade FDSiCr steel and the bottom bar is AWS BAu-6.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Poisson's Ratio 0.29
0.39
Shear Modulus, GPa 80
43
Tensile Strength: Ultimate (UTS), MPa 1930
190

Thermal Properties

Latent Heat of Fusion, J/g 270
120
Melting Completion (Liquidus), °C 1440
1050
Melting Onset (Solidus), °C 1400
1010
Specific Heat Capacity, J/kg-K 480
210
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Density, g/cm3 7.7
16

Common Calculations

Stiffness to Weight: Axial, points 13
4.0
Stiffness to Weight: Bending, points 25
10
Strength to Weight: Axial, points 69
3.2
Strength to Weight: Bending, points 44
4.5
Thermal Shock Resistance, points 58
8.5

Alloy Composition

Carbon (C), % 0.5 to 0.6
0
Chromium (Cr), % 0.5 to 0.8
0
Copper (Cu), % 0 to 0.12
0
Gold (Au), % 0
69.5 to 70.5
Iron (Fe), % 96.5 to 97.8
0
Manganese (Mn), % 0.5 to 0.9
0
Nickel (Ni), % 0
21.5 to 22.5
Palladium (Pd), % 0
7.5 to 8.5
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.2 to 1.6
0
Sulfur (S), % 0 to 0.025
0
Residuals, % 0
0 to 0.15