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ACI-ASTM CN7M Steel vs. EN 1.6580 Steel

Both ACI-ASTM CN7M steel and EN 1.6580 steel are iron alloys. They have 48% 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 1.6580 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
220 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 44
11 to 19
Fatigue Strength, MPa 190
310 to 610
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 480
720 to 1170
Tensile Strength: Yield (Proof), MPa 200
460 to 990

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
450
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 21
40
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 32
4.3
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 5.6
1.8
Embodied Energy, MJ/kg 78
23
Embodied Water, L/kg 210
59

Common Calculations

PREN (Pitting Resistance) 29
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 110
560 to 2590
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
26 to 41
Strength to Weight: Bending, points 17
23 to 31
Thermal Diffusivity, mm2/s 5.6
11
Thermal Shock Resistance, points 12
21 to 34

Alloy Composition

Carbon (C), % 0 to 0.070
0.26 to 0.34
Chromium (Cr), % 19 to 22
1.8 to 2.2
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 37.4 to 48.5
93.7 to 95.5
Manganese (Mn), % 0 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 2.0 to 3.0
0.3 to 0.5
Nickel (Ni), % 27.5 to 30.5
1.8 to 2.2
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