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ACI-ASTM CK3MCuN Steel vs. Nickel 685

ACI-ASTM CK3MCuN steel belongs to the iron alloys classification, while nickel 685 belongs to the nickel alloys. They have 44% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK3MCuN steel and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
350
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
17
Fatigue Strength, MPa 250
470
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 620
1250
Tensile Strength: Yield (Proof), MPa 290
850

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1090
1000
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1350
1330
Specific Heat Capacity, J/kg-K 460
460
Thermal Conductivity, W/m-K 12
13
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 29
75
Density, g/cm3 8.0
8.4
Embodied Carbon, kg CO2/kg material 5.6
10
Embodied Energy, MJ/kg 76
140
Embodied Water, L/kg 190
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
190
Resilience: Unit (Modulus of Resilience), kJ/m3 210
1820
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 21
42
Strength to Weight: Bending, points 20
31
Thermal Diffusivity, mm2/s 3.2
3.3
Thermal Shock Resistance, points 14
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.025
0.030 to 0.1
Chromium (Cr), % 19.5 to 20.5
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0.5 to 1.0
0 to 0.5
Iron (Fe), % 49.5 to 56.3
0 to 2.0
Manganese (Mn), % 0 to 1.2
0 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
3.5 to 5.0
Nickel (Ni), % 17.5 to 19.5
49.6 to 62.5
Nitrogen (N), % 0.18 to 0.24
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0
2.8 to 3.3
Zinc (Zn), % 0
0.020 to 0.12