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ACI-ASTM CK3MCuN Steel vs. S35140 Stainless Steel

Both ACI-ASTM CK3MCuN steel and S35140 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK3MCuN steel and the bottom bar is S35140 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
34
Fatigue Strength, MPa 250
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 620
690
Tensile Strength: Yield (Proof), MPa 290
310

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
500
Maximum Temperature: Mechanical, °C 1090
1100
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1350
1370
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 12
14
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 29
31
Density, g/cm3 8.0
8.0
Embodied Carbon, kg CO2/kg material 5.6
5.5
Embodied Energy, MJ/kg 76
78
Embodied Water, L/kg 190
190

Common Calculations

PREN (Pitting Resistance) 45
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
190
Resilience: Unit (Modulus of Resilience), kJ/m3 210
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
24
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 3.2
3.7
Thermal Shock Resistance, points 14
16

Alloy Composition

Carbon (C), % 0 to 0.025
0 to 0.1
Chromium (Cr), % 19.5 to 20.5
20 to 22
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 49.5 to 56.3
44.1 to 52.7
Manganese (Mn), % 0 to 1.2
1.0 to 3.0
Molybdenum (Mo), % 6.0 to 7.0
1.0 to 2.0
Nickel (Ni), % 17.5 to 19.5
25 to 27
Niobium (Nb), % 0
0.25 to 0.75
Nitrogen (N), % 0.18 to 0.24
0.080 to 0.2
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030