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ACI-ASTM CK3MCuN Steel vs. AISI 436 Stainless Steel

Both ACI-ASTM CK3MCuN steel and AISI 436 stainless steel are iron alloys. They have 72% 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 AISI 436 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
25
Fatigue Strength, MPa 250
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 620
500
Tensile Strength: Yield (Proof), MPa 290
270

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 420
460
Maximum Temperature: Mechanical, °C 1090
880
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 12
25
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 29
12
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.6
2.7
Embodied Energy, MJ/kg 76
38
Embodied Water, L/kg 190
120

Common Calculations

PREN (Pitting Resistance) 45
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
110
Resilience: Unit (Modulus of Resilience), kJ/m3 210
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21
18
Strength to Weight: Bending, points 20
18
Thermal Diffusivity, mm2/s 3.2
6.7
Thermal Shock Resistance, points 14
18

Alloy Composition

Carbon (C), % 0 to 0.025
0 to 0.12
Chromium (Cr), % 19.5 to 20.5
16 to 18
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 49.5 to 56.3
77.8 to 83.3
Manganese (Mn), % 0 to 1.2
0 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
0.75 to 1.3
Nickel (Ni), % 17.5 to 19.5
0
Niobium (Nb), % 0
0 to 0.8
Nitrogen (N), % 0.18 to 0.24
0
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 0.030