MakeItFrom.com
Menu (ESC)

ASTM B685 Alloy vs. S38815 Stainless Steel

ASTM B685 alloy belongs to the otherwise unclassified metals classification, while S38815 stainless steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is ASTM B685 alloy and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Poisson's Ratio 0.37
0.29
Shear Modulus, GPa 43
74
Tensile Strength: Ultimate (UTS), MPa 660 to 1060
610

Thermal Properties

Latent Heat of Fusion, J/g 180
370
Melting Completion (Liquidus), °C 1230
1360
Melting Onset (Solidus), °C 1200
1310
Specific Heat Capacity, J/kg-K 300
500
Thermal Expansion, µm/m-K 14
15

Otherwise Unclassified Properties

Density, g/cm3 11
7.5

Common Calculations

Stiffness to Weight: Axial, points 6.1
14
Stiffness to Weight: Bending, points 15
25
Strength to Weight: Axial, points 17 to 27
22
Strength to Weight: Bending, points 16 to 21
21
Thermal Shock Resistance, points 28 to 46
15

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.3
Cadmium (Cd), % 0 to 0.050
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
13 to 15
Copper (Cu), % 39.5 to 40.5
0.75 to 1.5
Iron (Fe), % 0 to 0.050
56.1 to 67
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0.75 to 1.5
Nickel (Ni), % 0
13 to 17
Palladium (Pd), % 59 to 60.5
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
5.5 to 6.5
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.020
Zinc (Zn), % 0 to 0.060
0
Residuals, % 0 to 0.2
0