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ACI-ASTM CD3MCuN Steel vs. S39277 Stainless Steel

Both ACI-ASTM CD3MCuN steel and S39277 stainless steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 31 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 CD3MCuN steel and the bottom bar is S39277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
28
Fatigue Strength, MPa 370
480
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 80
80
Tensile Strength: Ultimate (UTS), MPa 790
930
Tensile Strength: Yield (Proof), MPa 500
660

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 1440
1460
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
16
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 20
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.9
4.2
Embodied Energy, MJ/kg 54
59
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 41
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
240
Resilience: Unit (Modulus of Resilience), kJ/m3 620
1070
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
33
Strength to Weight: Bending, points 24
27
Thermal Diffusivity, mm2/s 4.1
4.2
Thermal Shock Resistance, points 22
26

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.025
Chromium (Cr), % 24 to 26.7
24 to 26
Copper (Cu), % 1.4 to 1.9
1.2 to 2.0
Iron (Fe), % 58.2 to 65.9
56.8 to 64.3
Manganese (Mn), % 0 to 1.2
0 to 0.8
Molybdenum (Mo), % 2.9 to 3.8
3.0 to 4.0
Nickel (Ni), % 5.6 to 6.7
6.5 to 8.0
Nitrogen (N), % 0.22 to 0.33
0.23 to 0.33
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 1.1
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.0020
Tungsten (W), % 0
0.8 to 1.2