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EN 1.3520 Steel vs. ASTM A232 Spring Steel

Both EN 1.3520 steel and ASTM A232 spring 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 EN 1.3520 steel and the bottom bar is ASTM A232 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 220
540
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Tensile Strength: Ultimate (UTS), MPa 620 to 730
1790

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 430
420
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 43
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
2.0
Embodied Energy, MJ/kg 20
28
Embodied Water, L/kg 54
51

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22 to 26
64
Strength to Weight: Bending, points 21 to 23
42
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 18 to 22
53

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Carbon (C), % 0.93 to 1.1
0.48 to 0.53
Chromium (Cr), % 1.4 to 1.7
0.8 to 1.1
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 95.9 to 97.2
96.8 to 97.7
Manganese (Mn), % 1.0 to 1.2
0.7 to 0.9
Molybdenum (Mo), % 0 to 0.1
0
Oxygen (O), % 0 to 0.0015
0
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0.45 to 0.75
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.035
Vanadium (V), % 0
0.15 to 0.3