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EN 1.7106 Steel vs. ASTM A232 Spring Steel

Both EN 1.7106 steel and ASTM A232 spring steel are iron alloys. They have a very high 98% of their average alloy composition in common. 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 1.7106 steel and the bottom bar is ASTM A232 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 500
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 660 to 2020
1790

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 410
420
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 46
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 2.1
2.3
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.5
2.0
Embodied Energy, MJ/kg 20
28
Embodied Water, L/kg 47
51

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 73
64
Strength to Weight: Bending, points 22 to 46
42
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 20 to 61
53

Alloy Composition

Carbon (C), % 0.52 to 0.6
0.48 to 0.53
Chromium (Cr), % 0.2 to 0.45
0.8 to 1.1
Iron (Fe), % 95.9 to 97
96.8 to 97.7
Manganese (Mn), % 0.7 to 1.0
0.7 to 0.9
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 1.6 to 2.0
0.15 to 0.35
Sulfur (S), % 0 to 0.025
0 to 0.035
Vanadium (V), % 0
0.15 to 0.3