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S20910 Stainless Steel vs. ASTM B685 Alloy

S20910 stainless steel belongs to the iron alloys classification, while ASTM B685 alloy belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.

For each property being compared, the top bar is S20910 stainless steel and the bottom bar is ASTM B685 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Poisson's Ratio 0.28
0.37
Shear Modulus, GPa 79
43
Tensile Strength: Ultimate (UTS), MPa 780 to 940
660 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 300
180
Melting Completion (Liquidus), °C 1420
1230
Melting Onset (Solidus), °C 1380
1200
Specific Heat Capacity, J/kg-K 480
300
Thermal Expansion, µm/m-K 16
14

Otherwise Unclassified Properties

Density, g/cm3 7.8
11

Common Calculations

Stiffness to Weight: Axial, points 14
6.1
Stiffness to Weight: Bending, points 25
15
Strength to Weight: Axial, points 28 to 33
17 to 27
Strength to Weight: Bending, points 24 to 27
16 to 21
Thermal Shock Resistance, points 17 to 21
28 to 46

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0
Copper (Cu), % 0
39.5 to 40.5
Iron (Fe), % 52.1 to 62.1
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 4.0 to 6.0
0
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Palladium (Pd), % 0
59 to 60.5
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 0.060
Residuals, % 0
0 to 0.2

Comparable Variants