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K94200 Alloy vs. ASTM A232 Spring Steel

Both K94200 alloy and ASTM A232 spring steel are iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is K94200 alloy and the bottom bar is ASTM A232 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
190
Elongation at Break, % 5.0 to 32
14
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 54
73
Shear Strength, MPa 330 to 410
1090
Tensile Strength: Ultimate (UTS), MPa 500 to 710
1790
Tensile Strength: Yield (Proof), MPa 270 to 650
1610

Thermal Properties

Melting Onset (Solidus), °C 1440
1410
Specific Heat Capacity, J/kg-K 500
470
Thermal Conductivity, W/m-K 15
52
Thermal Expansion, µm/m-K 5.0
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
8.4

Otherwise Unclassified Properties

Density, g/cm3 8.2
7.8

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 35 to 130
250
Stiffness to Weight: Axial, points 9.8
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 17 to 24
64
Strength to Weight: Bending, points 17 to 22
42
Thermal Diffusivity, mm2/s 3.7
14
Thermal Shock Resistance, points 49 to 70
53