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ACI-ASTM CE3MN Steel vs. ACI-ASTM CD3MCuN Steel

Both ACI-ASTM CE3MN steel and ACI-ASTM CD3MCuN steel are iron alloys. Both are furnished in the normalized and tempered condition. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is ACI-ASTM CE3MN steel and the bottom bar is ACI-ASTM CD3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 20
29
Fatigue Strength, MPa 380
370
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 81
80
Tensile Strength: Ultimate (UTS), MPa 770
790
Tensile Strength: Yield (Proof), MPa 590
500

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 450
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 21
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.2
3.9
Embodied Energy, MJ/kg 58
54
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 43
41
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
200
Resilience: Unit (Modulus of Resilience), kJ/m3 840
620
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
28
Strength to Weight: Bending, points 24
24
Thermal Diffusivity, mm2/s 4.1
4.1
Thermal Shock Resistance, points 21
22

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 24 to 26
24 to 26.7
Copper (Cu), % 0
1.4 to 1.9
Iron (Fe), % 58.1 to 65.9
58.2 to 65.9
Manganese (Mn), % 0 to 1.5
0 to 1.2
Molybdenum (Mo), % 4.0 to 5.0
2.9 to 3.8
Nickel (Ni), % 6.0 to 8.0
5.6 to 6.7
Nitrogen (N), % 0.1 to 0.3
0.22 to 0.33
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.1
Sulfur (S), % 0 to 0.040
0 to 0.030