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ACI-ASTM CD3MCuN Steel vs. S21603 Stainless Steel

Both ACI-ASTM CD3MCuN steel and S21603 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD3MCuN steel and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
45
Fatigue Strength, MPa 370
360
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
79
Tensile Strength: Ultimate (UTS), MPa 790
690
Tensile Strength: Yield (Proof), MPa 500
390

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
990
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 20
17
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.9
3.6
Embodied Energy, MJ/kg 54
50
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 41
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
270
Resilience: Unit (Modulus of Resilience), kJ/m3 620
380
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
25
Strength to Weight: Bending, points 24
22
Thermal Shock Resistance, points 22
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 24 to 26.7
17.5 to 22
Copper (Cu), % 1.4 to 1.9
0
Iron (Fe), % 58.2 to 65.9
57.6 to 67.8
Manganese (Mn), % 0 to 1.2
7.5 to 9.0
Molybdenum (Mo), % 2.9 to 3.8
2.0 to 3.0
Nickel (Ni), % 5.6 to 6.7
5.0 to 7.0
Nitrogen (N), % 0.22 to 0.33
0.25 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 1.1
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030