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Grade CW6MC Nickel vs. AWS ERTi-2

Grade CW6MC nickel belongs to the nickel alloys classification, while AWS ERTi-2 belongs to the titanium alloys.

For each property being compared, the top bar is grade CW6MC nickel and the bottom bar is AWS ERTi-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 28
20
Fatigue Strength, MPa 210
190
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 79
40
Tensile Strength: Ultimate (UTS), MPa 540
340
Tensile Strength: Yield (Proof), MPa 310
280

Thermal Properties

Latent Heat of Fusion, J/g 330
420
Maximum Temperature: Mechanical, °C 980
320
Melting Completion (Liquidus), °C 1480
1670
Melting Onset (Solidus), °C 1430
1620
Specific Heat Capacity, J/kg-K 440
540
Thermal Conductivity, W/m-K 11
21
Thermal Expansion, µm/m-K 12
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 80
37
Density, g/cm3 8.6
4.5
Embodied Carbon, kg CO2/kg material 14
31
Embodied Energy, MJ/kg 200
510
Embodied Water, L/kg 290
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
64
Resilience: Unit (Modulus of Resilience), kJ/m3 240
360
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 18
21
Strength to Weight: Bending, points 17
24
Thermal Diffusivity, mm2/s 2.8
8.7
Thermal Shock Resistance, points 15
27

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 20 to 23
0
Hydrogen (H), % 0
0 to 0.0080
Iron (Fe), % 0 to 5.0
0 to 0.12
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 8.0 to 10
0
Nickel (Ni), % 55.4 to 68.9
0
Niobium (Nb), % 3.2 to 4.5
0
Nitrogen (N), % 0
0 to 0.015
Oxygen (O), % 0
0.080 to 0.16
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
99.667 to 99.92