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EN 1.5537 Steel vs. ASTM A231 Spring Steel

Both EN 1.5537 steel and ASTM A231 spring steel are iron alloys. They have a very high 99% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.5537 steel and the bottom bar is ASTM A231 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
540
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Reduction in Area, % 64 to 69
46
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 520 to 1760
1790

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
420
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 48
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.0
Embodied Energy, MJ/kg 19
28
Embodied Water, L/kg 47
51

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18 to 63
64
Strength to Weight: Bending, points 18 to 41
42
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 15 to 52
53

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.33 to 0.38
0.48 to 0.53
Chromium (Cr), % 0 to 0.3
0.8 to 1.1
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 97.6 to 98.9
96.7 to 97.7
Manganese (Mn), % 0.8 to 1.1
0.7 to 0.9
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.3
0.15 to 0.35
Sulfur (S), % 0 to 0.025
0 to 0.040
Vanadium (V), % 0
0.15 to 0.3