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S30815 Stainless Steel vs. ASTM A232 Spring Steel

Both S30815 stainless steel and ASTM A232 spring steel are iron alloys. They have 67% 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 S30815 stainless steel and the bottom bar is ASTM A232 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
540
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
14
Fatigue Strength, MPa 320
1040
Poisson's Ratio 0.28
0.29
Reduction in Area, % 56
46
Shear Modulus, GPa 77
73
Shear Strength, MPa 480
1090
Tensile Strength: Ultimate (UTS), MPa 680
1790
Tensile Strength: Yield (Proof), MPa 350
1610

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1020
420
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
52
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 17
2.3
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.3
2.0
Embodied Energy, MJ/kg 47
28
Embodied Water, L/kg 160
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
250
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
64
Strength to Weight: Bending, points 22
42
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 15
53

Alloy Composition

Carbon (C), % 0.050 to 0.1
0.48 to 0.53
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 20 to 22
0.8 to 1.1
Iron (Fe), % 62.8 to 68.4
96.8 to 97.7
Manganese (Mn), % 0 to 0.8
0.7 to 0.9
Nickel (Ni), % 10 to 12
0
Nitrogen (N), % 0.14 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 1.4 to 2.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.035
Vanadium (V), % 0
0.15 to 0.3