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ASTM A232 Spring Steel vs. EN 1.8824 Steel

Both ASTM A232 spring steel and EN 1.8824 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.8824 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14
22
Fatigue Strength, MPa 1040
310
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 1090
370
Tensile Strength: Ultimate (UTS), MPa 1790
580
Tensile Strength: Yield (Proof), MPa 1610
440

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
400
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
49
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.6
Embodied Energy, MJ/kg 28
21
Embodied Water, L/kg 51
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
120
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 64
21
Strength to Weight: Bending, points 42
20
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 53
17

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.040
Carbon (C), % 0.48 to 0.53
0 to 0.16
Chromium (Cr), % 0.8 to 1.1
0
Iron (Fe), % 96.8 to 97.7
96.6 to 99.98
Manganese (Mn), % 0.7 to 0.9
0 to 1.7
Molybdenum (Mo), % 0
0 to 0.2
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.035
0 to 0.010
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0.15 to 0.3
0 to 0.1