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ACI-ASTM CK20 Steel vs. EN 1.7108 Steel

Both ACI-ASTM CK20 steel and EN 1.7108 steel are iron alloys. They have 55% 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 CK20 steel and the bottom bar is EN 1.7108 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
200 to 510
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
72
Tensile Strength: Ultimate (UTS), MPa 530
670 to 2070

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Mechanical, °C 1100
410
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1430
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
46
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
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.1
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.4
1.5
Embodied Energy, MJ/kg 62
20
Embodied Water, L/kg 190
47

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
24 to 75
Strength to Weight: Bending, points 19
22 to 47
Thermal Diffusivity, mm2/s 3.7
12
Thermal Shock Resistance, points 13
20 to 63

Alloy Composition

Carbon (C), % 0 to 0.2
0.57 to 0.65
Chromium (Cr), % 23 to 27
0.2 to 0.45
Iron (Fe), % 46.7 to 58
95.9 to 96.9
Manganese (Mn), % 0 to 2.0
0.7 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 19 to 22
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.0
1.6 to 2.0
Sulfur (S), % 0 to 0.040
0 to 0.025