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ACI-ASTM CN7MS Steel vs. EN 1.7108 Steel

Both ACI-ASTM CN7MS steel and EN 1.7108 steel are iron alloys. They have 52% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN7MS steel and the bottom bar is EN 1.7108 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
200 to 510
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Tensile Strength: Ultimate (UTS), MPa 540
670 to 2070

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Mechanical, °C 1040
410
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
46
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 28
2.1
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.1
1.5
Embodied Energy, MJ/kg 71
20
Embodied Water, L/kg 180
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 3.2
12
Thermal Shock Resistance, points 13
20 to 63

Alloy Composition

Carbon (C), % 0 to 0.070
0.57 to 0.65
Chromium (Cr), % 18 to 20
0.2 to 0.45
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 45.4 to 53.5
95.9 to 96.9
Manganese (Mn), % 0 to 1.0
0.7 to 1.0
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 22 to 25
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 2.5 to 3.5
1.6 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.025