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ASTM A232 Spring Steel vs. EN 1.7711 Steel

Both ASTM A232 spring steel and EN 1.7711 steel are iron alloys. Their average alloy composition is basically identical. 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 1.7711 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540
210 to 280
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14
16 to 22
Fatigue Strength, MPa 1040
290 to 520
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 1090
440 to 570
Tensile Strength: Ultimate (UTS), MPa 1790
690 to 930
Tensile Strength: Yield (Proof), MPa 1610
400 to 800

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
430
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
33
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
3.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
2.3
Embodied Energy, MJ/kg 28
32
Embodied Water, L/kg 51
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
130 to 140
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 64
24 to 33
Strength to Weight: Bending, points 42
22 to 27
Thermal Diffusivity, mm2/s 14
8.9
Thermal Shock Resistance, points 53
24 to 32

Alloy Composition

Aluminum (Al), % 0
0 to 0.015
Carbon (C), % 0.48 to 0.53
0.36 to 0.44
Chromium (Cr), % 0.8 to 1.1
0.9 to 1.2
Iron (Fe), % 96.8 to 97.7
96 to 97.5
Manganese (Mn), % 0.7 to 0.9
0.45 to 0.85
Molybdenum (Mo), % 0
0.5 to 0.65
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 0.030
Vanadium (V), % 0.15 to 0.3
0.25 to 0.35