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S31060 Stainless Steel vs. ASTM A227 Spring Steel

Both S31060 stainless steel and ASTM A227 spring steel are iron alloys. They have 65% of their average alloy composition in common. There are 30 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 S31060 stainless steel and the bottom bar is ASTM A227 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
500 to 640
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 46
12
Fatigue Strength, MPa 290
900 to 1160
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
72
Shear Strength, MPa 480
1030 to 1330
Tensile Strength: Ultimate (UTS), MPa 680
1720 to 2220
Tensile Strength: Yield (Proof), MPa 310
1430 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1080
400
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
52
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 18
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.4
1.4
Embodied Energy, MJ/kg 48
19
Embodied Water, L/kg 170
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
200 to 260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
61 to 79
Strength to Weight: Bending, points 22
41 to 48
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 15
55 to 71

Alloy Composition

Boron (B), % 0.0010 to 0.010
0
Carbon (C), % 0.050 to 0.1
0.45 to 0.85
Cerium (Ce), % 0 to 0.070
0
Chromium (Cr), % 22 to 24
0
Iron (Fe), % 61.4 to 67.8
97.4 to 99.1
Lanthanum (La), % 0 to 0.070
0
Manganese (Mn), % 0 to 1.0
0.3 to 1.3
Nickel (Ni), % 10 to 12.5
0
Nitrogen (N), % 0.18 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.5
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.050