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ACI-ASTM CK3MCuN Steel vs. N08031 Stainless Steel

Both ACI-ASTM CK3MCuN steel and N08031 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK3MCuN steel and the bottom bar is N08031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 39
45
Fatigue Strength, MPa 250
290
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
81
Tensile Strength: Ultimate (UTS), MPa 620
730
Tensile Strength: Yield (Proof), MPa 290
310

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 420
460
Maximum Temperature: Mechanical, °C 1090
1100
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 460
460
Thermal Conductivity, W/m-K 12
12
Thermal Expansion, µm/m-K 16
18

Otherwise Unclassified Properties

Base Metal Price, % relative 29
39
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 5.6
7.1
Embodied Energy, MJ/kg 76
96
Embodied Water, L/kg 190
240

Common Calculations

PREN (Pitting Resistance) 45
52
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
270
Resilience: Unit (Modulus of Resilience), kJ/m3 210
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
25
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 3.2
3.1
Thermal Shock Resistance, points 14
14

Alloy Composition

Carbon (C), % 0 to 0.025
0 to 0.015
Chromium (Cr), % 19.5 to 20.5
26 to 28
Copper (Cu), % 0.5 to 1.0
1.0 to 1.4
Iron (Fe), % 49.5 to 56.3
29 to 36.9
Manganese (Mn), % 0 to 1.2
0 to 2.0
Molybdenum (Mo), % 6.0 to 7.0
6.0 to 7.0
Nickel (Ni), % 17.5 to 19.5
30 to 32
Nitrogen (N), % 0.18 to 0.24
0.15 to 0.25
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.3
Sulfur (S), % 0 to 0.010
0 to 0.010