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EN 1.7077 Steel vs. ACI-ASTM CN7MS Steel

Both EN 1.7077 steel and ACI-ASTM CN7MS steel are iron alloys. They have 51% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.7077 steel and the bottom bar is ACI-ASTM CN7MS steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 490 to 1750
540

Thermal Properties

Latent Heat of Fusion, J/g 250
340
Maximum Temperature: Mechanical, °C 420
1040
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
12
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
28
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
5.1
Embodied Energy, MJ/kg 19
71
Embodied Water, L/kg 51
180

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17 to 62
19
Strength to Weight: Bending, points 18 to 41
19
Thermal Diffusivity, mm2/s 12
3.2
Thermal Shock Resistance, points 14 to 51
13

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.34 to 0.38
0 to 0.070
Chromium (Cr), % 0.9 to 1.2
18 to 20
Copper (Cu), % 0 to 0.25
1.5 to 2.0
Iron (Fe), % 96.8 to 98.1
45.4 to 53.5
Manganese (Mn), % 0.7 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 0
22 to 25
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.3
2.5 to 3.5
Sulfur (S), % 0 to 0.025
0 to 0.030