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ACI-ASTM CN7M Steel vs. EN 1.6579 Steel

Both ACI-ASTM CN7M steel and EN 1.6579 steel are iron alloys. They have 47% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 1.6579 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
260 to 290
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 44
11 to 14
Fatigue Strength, MPa 190
380 to 570
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 480
850 to 980
Tensile Strength: Yield (Proof), MPa 200
600 to 910

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
440
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
39
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 32
3.7
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.6
1.7
Embodied Energy, MJ/kg 78
22
Embodied Water, L/kg 210
56

Common Calculations

PREN (Pitting Resistance) 29
2.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
100 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 110
950 to 2210
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
30 to 35
Strength to Weight: Bending, points 17
25 to 28
Thermal Diffusivity, mm2/s 5.6
11
Thermal Shock Resistance, points 12
25 to 29

Alloy Composition

Carbon (C), % 0 to 0.070
0.32 to 0.38
Chromium (Cr), % 19 to 22
1.4 to 1.7
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 37.4 to 48.5
94.2 to 96.1
Manganese (Mn), % 0 to 1.5
0.6 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
0.15 to 0.35
Nickel (Ni), % 27.5 to 30.5
1.4 to 1.7
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.5
0 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.030