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S21640 Stainless Steel vs. AWS BVPd-1

S21640 stainless steel belongs to the iron alloys classification, while AWS BVPd-1 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 S21640 stainless steel and the bottom bar is AWS BVPd-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
150
Poisson's Ratio 0.28
0.37
Shear Modulus, GPa 78
56
Tensile Strength: Ultimate (UTS), MPa 740
240

Thermal Properties

Latent Heat of Fusion, J/g 290
200
Melting Completion (Liquidus), °C 1430
1240
Melting Onset (Solidus), °C 1380
1230
Specific Heat Capacity, J/kg-K 480
310
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Density, g/cm3 7.7
11

Common Calculations

Stiffness to Weight: Axial, points 14
7.7
Stiffness to Weight: Bending, points 25
16
Strength to Weight: Axial, points 27
6.1
Strength to Weight: Bending, points 23
7.9
Thermal Shock Resistance, points 16
9.8

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0 to 0.080
0 to 0.0050
Chromium (Cr), % 17.5 to 19.5
0
Cobalt (Co), % 0
33.9 to 36
Iron (Fe), % 63 to 74.3
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 3.5 to 6.5
0
Molybdenum (Mo), % 0.5 to 2.0
0
Nickel (Ni), % 4.0 to 6.5
0 to 0.060
Niobium (Nb), % 0.1 to 1.0
0
Nitrogen (N), % 0.080 to 0.3
0
Palladium (Pd), % 0
64 to 66
Phosphorus (P), % 0 to 0.060
0 to 0.0020
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.0010