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ACI-ASTM CN7MS Steel vs. SAE-AISI F2 Steel

Both ACI-ASTM CN7MS steel and SAE-AISI F2 steel are iron alloys. They have 50% of their average alloy composition in common. There are 22 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 ACI-ASTM CN7MS steel and the bottom bar is SAE-AISI F2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 540
710 to 2360

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Melting Completion (Liquidus), °C 1400
1520
Melting Onset (Solidus), °C 1350
1470
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 12
42
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 28
10
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 5.1
2.3
Embodied Energy, MJ/kg 71
32
Embodied Water, L/kg 180
50

Common Calculations

PREN (Pitting Resistance) 28
6.5
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
24 to 81
Strength to Weight: Bending, points 19
22 to 49
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 13
21 to 71

Alloy Composition

Carbon (C), % 0 to 0.070
1.2 to 1.4
Chromium (Cr), % 18 to 20
0.2 to 0.4
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 45.4 to 53.5
92.6 to 95.4
Manganese (Mn), % 0 to 1.0
0.1 to 0.5
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 22 to 25
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 2.5 to 3.5
0.1 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
3.0 to 4.5