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AISI 439 Stainless Steel vs. K94200 Alloy

Both AISI 439 stainless steel and K94200 alloy are iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is AISI 439 stainless steel and the bottom bar is K94200 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 23
5.0 to 32
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
54
Shear Strength, MPa 310
330 to 410
Tensile Strength: Ultimate (UTS), MPa 490
500 to 710
Tensile Strength: Yield (Proof), MPa 250
270 to 650

Thermal Properties

Melting Onset (Solidus), °C 1430
1440
Specific Heat Capacity, J/kg-K 480
500
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 11
5.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
3.0

Otherwise Unclassified Properties

Density, g/cm3 7.7
8.2

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
35 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 160
250 to 1460
Stiffness to Weight: Axial, points 14
9.8
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 18
17 to 24
Strength to Weight: Bending, points 18
17 to 22
Thermal Diffusivity, mm2/s 6.7
3.7
Thermal Shock Resistance, points 16
49 to 70