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ACI-ASTM CK3MCuN Steel vs. EN 1.4521 Stainless Steel

Both ACI-ASTM CK3MCuN steel and EN 1.4521 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 31 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 EN 1.4521 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
23
Fatigue Strength, MPa 250
230
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 620
520
Tensile Strength: Yield (Proof), MPa 290
340

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 420
500
Maximum Temperature: Mechanical, °C 1090
930
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 12
23
Thermal Expansion, µm/m-K 16
10

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
12
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.6
2.8
Embodied Energy, MJ/kg 76
39
Embodied Water, L/kg 190
130

Common Calculations

PREN (Pitting Resistance) 45
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
100
Resilience: Unit (Modulus of Resilience), kJ/m3 210
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21
19
Strength to Weight: Bending, points 20
19
Thermal Diffusivity, mm2/s 3.2
6.2
Thermal Shock Resistance, points 14
18

Alloy Composition

Carbon (C), % 0 to 0.025
0 to 0.025
Chromium (Cr), % 19.5 to 20.5
17 to 20
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 49.5 to 56.3
74.6 to 81.1
Manganese (Mn), % 0 to 1.2
0 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
1.8 to 2.5
Nickel (Ni), % 17.5 to 19.5
0
Nitrogen (N), % 0.18 to 0.24
0 to 0.030
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.8