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ASTM A232 Spring Steel vs. EN 1.3505 Steel

Both ASTM A232 spring steel and EN 1.3505 steel are iron alloys. Their average alloy composition is basically identical. There are 25 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 A232 spring steel and the bottom bar is EN 1.3505 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540
180 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Tensile Strength: Ultimate (UTS), MPa 1790
600 to 690

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
430
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
45
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
2.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.5
Embodied Energy, MJ/kg 28
20
Embodied Water, L/kg 51
52

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 64
22 to 25
Strength to Weight: Bending, points 42
20 to 22
Thermal Diffusivity, mm2/s 14
12
Thermal Shock Resistance, points 53
18 to 20

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0.48 to 0.53
0.93 to 1.1
Chromium (Cr), % 0.8 to 1.1
1.4 to 1.6
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 96.8 to 97.7
97.1 to 98.3
Manganese (Mn), % 0.7 to 0.9
0.25 to 0.45
Molybdenum (Mo), % 0
0 to 0.1
Oxygen (O), % 0
0 to 0.0015
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0.15 to 0.35
Sulfur (S), % 0 to 0.035
0 to 0.030
Vanadium (V), % 0.15 to 0.3
0