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ACI-ASTM CH20 Steel vs. EN 1.7218 Steel

Both ACI-ASTM CH20 steel and EN 1.7218 steel are iron alloys. They have 63% of their average alloy composition in common. 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 ACI-ASTM CH20 steel and the bottom bar is EN 1.7218 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150 to 230
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 610
500 to 1550

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
420
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
44
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 20
2.6
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.7
1.5
Embodied Energy, MJ/kg 53
20
Embodied Water, L/kg 180
52

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
18 to 55
Strength to Weight: Bending, points 21
18 to 38
Thermal Diffusivity, mm2/s 3.7
12
Thermal Shock Resistance, points 15
15 to 46

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0 to 0.2
0.22 to 0.29
Chromium (Cr), % 22 to 26
0.9 to 1.2
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 54.7 to 66
96.2 to 98.1
Manganese (Mn), % 0 to 1.5
0.6 to 0.9
Molybdenum (Mo), % 0 to 0.5
0.15 to 0.3
Nickel (Ni), % 12 to 15
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 2.0
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.035