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EN 1.6368 Steel vs. ASTM A232 Spring Steel

Both EN 1.6368 steel and ASTM A232 spring steel are iron alloys. They have a very high 97% 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 EN 1.6368 steel and the bottom bar is ASTM A232 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
540
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
14
Fatigue Strength, MPa 310 to 330
1040
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 410 to 430
1090
Tensile Strength: Ultimate (UTS), MPa 660 to 690
1790
Tensile Strength: Yield (Proof), MPa 460 to 490
1610

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
420
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
2.3
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.7
2.0
Embodied Energy, MJ/kg 22
28
Embodied Water, L/kg 53
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 24
64
Strength to Weight: Bending, points 21 to 22
42
Thermal Diffusivity, mm2/s 11
14
Thermal Shock Resistance, points 20
53

Alloy Composition

Aluminum (Al), % 0.015 to 0.040
0
Carbon (C), % 0 to 0.17
0.48 to 0.53
Chromium (Cr), % 0 to 0.3
0.8 to 1.1
Copper (Cu), % 0.5 to 0.8
0
Iron (Fe), % 95.1 to 97.2
96.8 to 97.7
Manganese (Mn), % 0.8 to 1.2
0.7 to 0.9
Molybdenum (Mo), % 0.25 to 0.5
0
Nickel (Ni), % 1.0 to 1.3
0
Niobium (Nb), % 0.015 to 0.045
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0.25 to 0.5
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.035
Vanadium (V), % 0
0.15 to 0.3