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EN 1.6579 Steel vs. ACI-ASTM CN7MS Steel

Both EN 1.6579 steel and ACI-ASTM CN7MS steel are iron alloys. They have 54% of their average alloy composition in common. There are 29 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 EN 1.6579 steel and the bottom bar is ACI-ASTM CN7MS steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260 to 290
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 14
39
Fatigue Strength, MPa 380 to 570
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 850 to 980
540
Tensile Strength: Yield (Proof), MPa 600 to 910
230

Thermal Properties

Latent Heat of Fusion, J/g 250
340
Maximum Temperature: Mechanical, °C 440
1040
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1410
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
12
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
28
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.7
5.1
Embodied Energy, MJ/kg 22
71
Embodied Water, L/kg 56
180

Common Calculations

PREN (Pitting Resistance) 2.4
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 120
170
Resilience: Unit (Modulus of Resilience), kJ/m3 950 to 2210
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 30 to 35
19
Strength to Weight: Bending, points 25 to 28
19
Thermal Diffusivity, mm2/s 11
3.2
Thermal Shock Resistance, points 25 to 29
13

Alloy Composition

Carbon (C), % 0.32 to 0.38
0 to 0.070
Chromium (Cr), % 1.4 to 1.7
18 to 20
Copper (Cu), % 0
1.5 to 2.0
Iron (Fe), % 94.2 to 96.1
45.4 to 53.5
Manganese (Mn), % 0.6 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.15 to 0.35
2.5 to 3.0
Nickel (Ni), % 1.4 to 1.7
22 to 25
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.6
2.5 to 3.5
Sulfur (S), % 0 to 0.030
0 to 0.030