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K94200 Alloy vs. S40920 Stainless Steel

Both K94200 alloy and S40920 stainless steel are iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is K94200 alloy and the bottom bar is S40920 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
190
Elongation at Break, % 5.0 to 32
22
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 54
75
Shear Strength, MPa 330 to 410
270
Tensile Strength: Ultimate (UTS), MPa 500 to 710
430
Tensile Strength: Yield (Proof), MPa 270 to 650
190

Thermal Properties

Melting Onset (Solidus), °C 1440
1400
Specific Heat Capacity, J/kg-K 500
480
Thermal Conductivity, W/m-K 15
26
Thermal Expansion, µm/m-K 5.0
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
3.3

Otherwise Unclassified Properties

Density, g/cm3 8.2
7.7

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 35 to 130
78
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 1460
97
Stiffness to Weight: Axial, points 9.8
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 17 to 24
15
Strength to Weight: Bending, points 17 to 22
16
Thermal Diffusivity, mm2/s 3.7
6.9
Thermal Shock Resistance, points 49 to 70
15