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ASTM A232 Spring Steel vs. AISI 415 Stainless Steel

Both ASTM A232 spring steel and AISI 415 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A232 spring steel and the bottom bar is AISI 415 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540
260
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14
17
Fatigue Strength, MPa 1040
430
Poisson's Ratio 0.29
0.28
Reduction in Area, % 46
50
Shear Modulus, GPa 73
76
Shear Strength, MPa 1090
550
Tensile Strength: Ultimate (UTS), MPa 1790
900
Tensile Strength: Yield (Proof), MPa 1610
700

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
780
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
24
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
11
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
2.5
Embodied Energy, MJ/kg 28
35
Embodied Water, L/kg 51
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 64
32
Strength to Weight: Bending, points 42
26
Thermal Diffusivity, mm2/s 14
6.4
Thermal Shock Resistance, points 53
33

Alloy Composition

Carbon (C), % 0.48 to 0.53
0 to 0.050
Chromium (Cr), % 0.8 to 1.1
11.5 to 14
Iron (Fe), % 96.8 to 97.7
77.8 to 84
Manganese (Mn), % 0.7 to 0.9
0.5 to 1.0
Molybdenum (Mo), % 0
0.5 to 1.0
Nickel (Ni), % 0
3.5 to 5.5
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0 to 0.6
Sulfur (S), % 0 to 0.035
0 to 0.030
Vanadium (V), % 0.15 to 0.3
0