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ACI-ASTM CN3MN Steel vs. SAE-AISI 1345 Steel

Both ACI-ASTM CN3MN steel and SAE-AISI 1345 steel are iron alloys. They have 47% of their average alloy composition in common. There are 30 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 CN3MN steel and the bottom bar is SAE-AISI 1345 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
170 to 210
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 39
11 to 23
Fatigue Strength, MPa 250
230 to 390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
72
Tensile Strength: Ultimate (UTS), MPa 620
590 to 730
Tensile Strength: Yield (Proof), MPa 300
330 to 620

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 13
51
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 33
1.9
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.2
1.4
Embodied Energy, MJ/kg 84
19
Embodied Water, L/kg 200
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
78 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 210
290 to 1040
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
21 to 26
Strength to Weight: Bending, points 20
20 to 23
Thermal Diffusivity, mm2/s 3.4
14
Thermal Shock Resistance, points 14
19 to 23

Alloy Composition

Carbon (C), % 0 to 0.030
0.43 to 0.48
Chromium (Cr), % 20 to 22
0
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 41.4 to 50.3
97.2 to 97.8
Manganese (Mn), % 0 to 2.0
1.6 to 1.9
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 23.5 to 25.5
0
Nitrogen (N), % 0.18 to 0.26
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.040