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AWS BAu-2 vs. EN 1.4325 Stainless Steel

AWS BAu-2 belongs to the otherwise unclassified metals classification, while EN 1.4325 stainless steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (20, 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 AWS BAu-2 and the bottom bar is EN 1.4325 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Poisson's Ratio 0.4
0.28
Shear Modulus, GPa 36
77
Tensile Strength: Ultimate (UTS), MPa 150
650

Thermal Properties

Latent Heat of Fusion, J/g 92
290
Melting Completion (Liquidus), °C 890
1430
Melting Onset (Solidus), °C 890
1380
Specific Heat Capacity, J/kg-K 180
480
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Density, g/cm3 17
7.8

Common Calculations

Stiffness to Weight: Axial, points 3.3
14
Stiffness to Weight: Bending, points 9.1
25
Strength to Weight: Axial, points 2.4
23
Strength to Weight: Bending, points 3.6
21
Thermal Shock Resistance, points 7.1
15

Alloy Composition

Carbon (C), % 0
0.030 to 0.15
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 19.4 to 20.5
0
Gold (Au), % 79.5 to 80.5
0
Iron (Fe), % 0
67.8 to 75
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
8.0 to 10
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.15
0