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ASTM A227 Spring Steel vs. S30615 Stainless Steel

Both ASTM A227 spring steel and S30615 stainless steel are iron alloys. They have 62% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM A227 spring steel and the bottom bar is S30615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 500 to 640
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12
39
Fatigue Strength, MPa 900 to 1160
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
75
Shear Strength, MPa 1030 to 1330
470
Tensile Strength: Ultimate (UTS), MPa 1720 to 2220
690
Tensile Strength: Yield (Proof), MPa 1430 to 1850
310

Thermal Properties

Latent Heat of Fusion, J/g 250
340
Maximum Temperature: Mechanical, °C 400
960
Melting Completion (Liquidus), °C 1450
1370
Melting Onset (Solidus), °C 1410
1320
Specific Heat Capacity, J/kg-K 470
500
Thermal Conductivity, W/m-K 52
14
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
19
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 1.4
3.7
Embodied Energy, MJ/kg 19
53
Embodied Water, L/kg 46
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 260
220
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 61 to 79
25
Strength to Weight: Bending, points 41 to 48
23
Thermal Diffusivity, mm2/s 14
3.7
Thermal Shock Resistance, points 55 to 71
16

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.5
Carbon (C), % 0.45 to 0.85
0.16 to 0.24
Chromium (Cr), % 0
17 to 19.5
Iron (Fe), % 97.4 to 99.1
56.7 to 65.3
Manganese (Mn), % 0.3 to 1.3
0 to 2.0
Nickel (Ni), % 0
13.5 to 16
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0.15 to 0.35
3.2 to 4.0
Sulfur (S), % 0 to 0.050
0 to 0.030