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R30556 Alloy vs. AWS BAu-5

R30556 alloy belongs to the iron alloys classification, while AWS BAu-5 belongs to the otherwise unclassified metals. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 15 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is R30556 alloy and the bottom bar is AWS BAu-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
140
Poisson's Ratio 0.28
0.37
Shear Modulus, GPa 81
50
Tensile Strength: Ultimate (UTS), MPa 780
210

Thermal Properties

Latent Heat of Fusion, J/g 300
180
Melting Completion (Liquidus), °C 1420
1170
Melting Onset (Solidus), °C 1330
1140
Specific Heat Capacity, J/kg-K 450
280
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Density, g/cm3 8.4
13

Common Calculations

Stiffness to Weight: Axial, points 14
5.8
Stiffness to Weight: Bending, points 23
13
Strength to Weight: Axial, points 26
4.5
Strength to Weight: Bending, points 22
6.0
Thermal Shock Resistance, points 18
9.0

Alloy Composition

Aluminum (Al), % 0.1 to 0.5
0
Boron (B), % 0 to 0.020
0
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 21 to 23
0
Cobalt (Co), % 16 to 21
0
Gold (Au), % 0
29.5 to 30.5
Iron (Fe), % 20.4 to 38.2
0
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
0
Molybdenum (Mo), % 2.5 to 4.0
0
Nickel (Ni), % 19 to 22.5
35.5 to 36.4
Niobium (Nb), % 0 to 0.3
0
Nitrogen (N), % 0.1 to 0.3
0
Palladium (Pd), % 0
33.5 to 34.5
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.2 to 0.8
0
Sulfur (S), % 0 to 0.015
0
Tantalum (Ta), % 0.3 to 1.3
0
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
0
Residuals, % 0
0 to 0.15