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70Ag-30Ni Alloy vs. S31277 Stainless Steel

70Ag-30Ni alloy belongs to the otherwise unclassified metals classification, while S31277 stainless steel belongs to the iron alloys. They have a modest 27% 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 (15, in this case) are not shown.

For each property being compared, the top bar is 70Ag-30Ni alloy and the bottom bar is S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
210
Poisson's Ratio 0.35
0.28
Shear Modulus, GPa 39
80
Tensile Strength: Ultimate (UTS), MPa 320 to 530
860

Thermal Properties

Latent Heat of Fusion, J/g 170
310
Melting Completion (Liquidus), °C 960
1460
Melting Onset (Solidus), °C 960
1410
Specific Heat Capacity, J/kg-K 300
460
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Density, g/cm3 10
8.1

Common Calculations

Stiffness to Weight: Axial, points 5.8
14
Stiffness to Weight: Bending, points 16
24
Strength to Weight: Axial, points 8.8 to 15
29
Strength to Weight: Bending, points 10 to 15
25
Thermal Shock Resistance, points 13 to 21
19

Alloy Composition

Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
20.5 to 23
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 0
35.5 to 46.2
Manganese (Mn), % 0
0 to 3.0
Molybdenum (Mo), % 0
6.5 to 8.0
Nickel (Ni), % 28.8 to 31
26 to 28
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.5
Silver (Ag), % 69 to 71
0
Sulfur (S), % 0
0 to 0.010
Residuals, % 0 to 0.2
0