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EN 1.7218 Steel vs. EN 1.8507 Steel

Both EN 1.7218 steel and EN 1.8507 steel are iron alloys. Their average alloy composition is basically identical. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.7218 steel and the bottom bar is EN 1.8507 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 230
270
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 500 to 1550
900

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
430
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 44
41
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
2.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.6
Embodied Energy, MJ/kg 20
21
Embodied Water, L/kg 52
63

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18 to 55
32
Strength to Weight: Bending, points 18 to 38
27
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 15 to 46
26

Alloy Composition

Aluminum (Al), % 0 to 0.040
0.8 to 1.2
Carbon (C), % 0.22 to 0.29
0.3 to 0.37
Chromium (Cr), % 0.9 to 1.2
1.0 to 1.3
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 96.2 to 98.1
96.1 to 97.7
Manganese (Mn), % 0.6 to 0.9
0.4 to 0.7
Molybdenum (Mo), % 0.15 to 0.3
0.15 to 0.25
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.035
0 to 0.035