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ACI-ASTM CN7MS Steel vs. ACI-ASTM CE3MN Steel

Both ACI-ASTM CN7MS steel and ACI-ASTM CE3MN steel are iron alloys. They have 79% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN7MS steel and the bottom bar is ACI-ASTM CE3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 39
20
Fatigue Strength, MPa 200
380
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
81
Tensile Strength: Ultimate (UTS), MPa 540
770
Tensile Strength: Yield (Proof), MPa 230
590

Thermal Properties

Latent Heat of Fusion, J/g 340
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1040
1100
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 28
21
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.1
4.2
Embodied Energy, MJ/kg 71
58
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 28
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
140
Resilience: Unit (Modulus of Resilience), kJ/m3 140
840
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
27
Strength to Weight: Bending, points 19
24
Thermal Diffusivity, mm2/s 3.2
4.1
Thermal Shock Resistance, points 13
21

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 18 to 20
24 to 26
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 45.4 to 53.5
58.1 to 65.9
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 2.5 to 3.0
4.0 to 5.0
Nickel (Ni), % 22 to 25
6.0 to 8.0
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 2.5 to 3.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.040