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ASTM A231 Spring Steel vs. EN 1.1219 Steel

Both ASTM A231 spring steel and EN 1.1219 steel are iron alloys. They have a very high 99% 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 ASTM A231 spring steel and the bottom bar is EN 1.1219 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540
200 to 220
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Tensile Strength: Ultimate (UTS), MPa 1790
700 to 770

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
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
1.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 28
19
Embodied Water, L/kg 51
47

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 64
25 to 27
Strength to Weight: Bending, points 42
22 to 24
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 53
22 to 25

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0.48 to 0.53
0.52 to 0.6
Chromium (Cr), % 0.8 to 1.1
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 96.7 to 97.7
98.3 to 99.4
Manganese (Mn), % 0.7 to 0.9
0.6 to 0.9
Oxygen (O), % 0
0 to 0.0020
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0.15 to 0.3
0