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ACI-ASTM CN7M Steel vs. EN 1.8159 Steel

Both ACI-ASTM CN7M steel and EN 1.8159 steel are iron alloys. They have 45% 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 CN7M steel and the bottom bar is EN 1.8159 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
200 to 360
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 480
660 to 1980

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 1450
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 21
46
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 32
2.3
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.6
1.9
Embodied Energy, MJ/kg 78
26
Embodied Water, L/kg 210
52

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
23 to 70
Strength to Weight: Bending, points 17
21 to 45
Thermal Diffusivity, mm2/s 5.6
13
Thermal Shock Resistance, points 12
19 to 58

Alloy Composition

Carbon (C), % 0 to 0.070
0.47 to 0.55
Chromium (Cr), % 19 to 22
0.9 to 1.2
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 37.4 to 48.5
96.4 to 97.8
Manganese (Mn), % 0 to 1.5
0.7 to 1.1
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 27.5 to 30.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.5
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.035
Vanadium (V), % 0
0.1 to 0.25