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ACI-ASTM CK20 Steel vs. EN 1.1191 Steel

Both ACI-ASTM CK20 steel and EN 1.1191 steel are iron alloys. They have 54% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 1.1191 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
180 to 200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 37
16 to 17
Fatigue Strength, MPa 220
210 to 290
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
72
Tensile Strength: Ultimate (UTS), MPa 530
630 to 700
Tensile Strength: Yield (Proof), MPa 260
310 to 440

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
48
Thermal Expansion, µm/m-K 15
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.4
1.4
Embodied Energy, MJ/kg 62
19
Embodied Water, L/kg 190
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
83 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 170
260 to 510
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
22 to 25
Strength to Weight: Bending, points 19
21 to 22
Thermal Diffusivity, mm2/s 3.7
13
Thermal Shock Resistance, points 13
20 to 22

Alloy Composition

Carbon (C), % 0 to 0.2
0.42 to 0.5
Chromium (Cr), % 23 to 27
0 to 0.4
Iron (Fe), % 46.7 to 58
97.3 to 99.08
Manganese (Mn), % 0 to 2.0
0.5 to 0.8
Molybdenum (Mo), % 0 to 0.5
0 to 0.1
Nickel (Ni), % 19 to 22
0 to 0.4
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