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ACI-ASTM CK3MCuN Steel vs. S82012 Stainless Steel

Both ACI-ASTM CK3MCuN steel and S82012 stainless steel are iron alloys. They have 76% 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 CK3MCuN steel and the bottom bar is S82012 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
40
Fatigue Strength, MPa 250
480
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 620
800
Tensile Strength: Yield (Proof), MPa 290
560

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1090
950
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1350
1380
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 29
11
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.6
2.4
Embodied Energy, MJ/kg 76
35
Embodied Water, L/kg 190
140

Common Calculations

PREN (Pitting Resistance) 45
24
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
290
Resilience: Unit (Modulus of Resilience), kJ/m3 210
790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21
29
Strength to Weight: Bending, points 20
25
Thermal Diffusivity, mm2/s 3.2
3.9
Thermal Shock Resistance, points 14
23

Alloy Composition

Carbon (C), % 0 to 0.025
0 to 0.050
Chromium (Cr), % 19.5 to 20.5
19 to 20.5
Copper (Cu), % 0.5 to 1.0
0 to 1.0
Iron (Fe), % 49.5 to 56.3
71.3 to 77.9
Manganese (Mn), % 0 to 1.2
2.0 to 4.0
Molybdenum (Mo), % 6.0 to 7.0
0.1 to 0.6
Nickel (Ni), % 17.5 to 19.5
0.8 to 1.5
Nitrogen (N), % 0.18 to 0.24
0.16 to 0.26
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.010
0 to 0.0050