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S40975 Stainless Steel vs. Z21210 Zinc

S40975 stainless steel belongs to the iron alloys classification, while Z21210 zinc belongs to the zinc alloys. There are 13 material properties with values for both materials. Properties with values for just one material (21, in this case) are not shown.

For each property being compared, the top bar is S40975 stainless steel and the bottom bar is Z21210 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Rockwell B Hardness 81
45 to 58
Tensile Strength: Ultimate (UTS), MPa 460
150 to 170

Thermal Properties

Melting Completion (Liquidus), °C 1450
420
Melting Onset (Solidus), °C 1400
420
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 26
110
Thermal Expansion, µm/m-K 10
32

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
28
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
35

Otherwise Unclassified Properties

Density, g/cm3 7.8
7.1

Common Calculations

Strength to Weight: Axial, points 17
5.7 to 6.4
Strength to Weight: Bending, points 17
8.6 to 9.4
Thermal Diffusivity, mm2/s 7.0
38