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ASTM A232 Spring Steel vs. EN 1.8527 Steel

Both ASTM A232 spring steel and EN 1.8527 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have a very high 96% 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 ASTM A232 spring steel and the bottom bar is EN 1.8527 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540
270
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14
16
Fatigue Strength, MPa 1040
520
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Shear Strength, MPa 1090
550
Tensile Strength: Ultimate (UTS), MPa 1790
900
Tensile Strength: Yield (Proof), MPa 1610
800

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 420
490
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
41
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
4.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.7
Embodied Energy, MJ/kg 28
23
Embodied Water, L/kg 51
66

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 64
32
Strength to Weight: Bending, points 42
26
Thermal Diffusivity, mm2/s 14
11
Thermal Shock Resistance, points 53
26

Alloy Composition

Carbon (C), % 0.48 to 0.53
0.040 to 0.12
Chromium (Cr), % 0.8 to 1.1
3.7 to 4.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 96.8 to 97.7
93.2 to 95.1
Manganese (Mn), % 0.7 to 0.9
0.85 to 1.2
Molybdenum (Mo), % 0
0.4 to 0.6
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.4
Sulfur (S), % 0 to 0.035
0 to 0.035
Vanadium (V), % 0.15 to 0.3
0