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S21460 Stainless Steel vs. ASTM B477 Au-Ni-Ag

S21460 stainless steel belongs to the iron alloys classification, while ASTM B477 Au-Ni-Ag belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (15, 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 S21460 stainless steel and the bottom bar is ASTM B477 Au-Ni-Ag.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
95
Elongation at Break, % 46
5.5 to 11
Poisson's Ratio 0.28
0.41
Shear Modulus, GPa 77
34
Shear Strength, MPa 580
190 to 320
Tensile Strength: Ultimate (UTS), MPa 830
310 to 550

Thermal Properties

Latent Heat of Fusion, J/g 290
80
Melting Completion (Liquidus), °C 1380
1010
Melting Onset (Solidus), °C 1330
930
Specific Heat Capacity, J/kg-K 480
160
Thermal Expansion, µm/m-K 18
15

Otherwise Unclassified Properties

Density, g/cm3 7.6
17

Common Calculations

Stiffness to Weight: Axial, points 14
3.1
Stiffness to Weight: Bending, points 25
8.9
Strength to Weight: Axial, points 30
5.0 to 9.0
Strength to Weight: Bending, points 26
6.0 to 8.8
Thermal Shock Resistance, points 17
16 to 28

Alloy Composition

Carbon (C), % 0 to 0.12
0
Chromium (Cr), % 17 to 19
0
Gold (Au), % 0
74.2 to 75.8
Iron (Fe), % 57.3 to 63.7
0
Manganese (Mn), % 14 to 16
0
Nickel (Ni), % 5.0 to 6.0
2.6 to 3.4
Nitrogen (N), % 0.35 to 0.5
0
Phosphorus (P), % 0 to 0.060
0
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
21.4 to 22.6
Sulfur (S), % 0 to 0.030
0
Residuals, % 0
0 to 0.3