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ACI-ASTM CN7MS Steel vs. SAE-AISI 4150 Steel

Both ACI-ASTM CN7MS steel and SAE-AISI 4150 steel are iron alloys. They have 51% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 4150 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
200 to 380
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
12 to 20
Fatigue Strength, MPa 200
260 to 780
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 540
660 to 1310
Tensile Strength: Yield (Proof), MPa 230
380 to 1220

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 1040
420
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
42
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 28
2.4
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.1
1.5
Embodied Energy, MJ/kg 71
20
Embodied Water, L/kg 180
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
82 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 140
380 to 3930
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
24 to 47
Strength to Weight: Bending, points 19
22 to 34
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 13
19 to 39

Alloy Composition

Carbon (C), % 0 to 0.070
0.48 to 0.53
Chromium (Cr), % 18 to 20
0.8 to 1.1
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 45.4 to 53.5
96.7 to 97.7
Manganese (Mn), % 0 to 1.0
0.75 to 1.0
Molybdenum (Mo), % 2.5 to 3.0
0.15 to 0.25
Nickel (Ni), % 22 to 25
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 2.5 to 3.5
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040