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ACI-ASTM CD3MCuN Steel vs. S20910 Stainless Steel

Both ACI-ASTM CD3MCuN steel and S20910 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 29 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 CD3MCuN steel and the bottom bar is S20910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
14 to 39
Fatigue Strength, MPa 370
310 to 460
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
79
Tensile Strength: Ultimate (UTS), MPa 790
780 to 940
Tensile Strength: Yield (Proof), MPa 500
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 450
460
Maximum Temperature: Mechanical, °C 1100
1080
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 20
22
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.9
4.8
Embodied Energy, MJ/kg 54
68
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 41
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 620
460 to 1640
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
28 to 33
Strength to Weight: Bending, points 24
24 to 27
Thermal Diffusivity, mm2/s 4.1
3.6
Thermal Shock Resistance, points 22
17 to 21

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.060
Chromium (Cr), % 24 to 26.7
20.5 to 23.5
Copper (Cu), % 1.4 to 1.9
0
Iron (Fe), % 58.2 to 65.9
52.1 to 62.1
Manganese (Mn), % 0 to 1.2
4.0 to 6.0
Molybdenum (Mo), % 2.9 to 3.8
1.5 to 3.0
Nickel (Ni), % 5.6 to 6.7
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0.22 to 0.33
0.2 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.1
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3