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S21800 Stainless Steel vs. K94200 Alloy

Both S21800 stainless steel and K94200 alloy are iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is K94200 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
140
Elongation at Break, % 40
5.0 to 32
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 75
54
Shear Strength, MPa 510
330 to 410
Tensile Strength: Ultimate (UTS), MPa 740
500 to 710
Tensile Strength: Yield (Proof), MPa 390
270 to 650

Thermal Properties

Melting Onset (Solidus), °C 1310
1440
Specific Heat Capacity, J/kg-K 500
500
Thermal Expansion, µm/m-K 16
5.0

Otherwise Unclassified Properties

Density, g/cm3 7.5
8.2

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
35 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 390
250 to 1460
Stiffness to Weight: Axial, points 14
9.8
Stiffness to Weight: Bending, points 26
21
Strength to Weight: Axial, points 27
17 to 24
Strength to Weight: Bending, points 24
17 to 22
Thermal Shock Resistance, points 17
49 to 70