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Nickel 685 vs. SAE-AISI T2 Steel

Nickel 685 belongs to the nickel alloys classification, while SAE-AISI T2 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is nickel 685 and the bottom bar is SAE-AISI T2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 1250
780 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1380
1820
Melting Onset (Solidus), °C 1330
1760
Specific Heat Capacity, J/kg-K 460
410
Thermal Conductivity, W/m-K 13
19
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
46
Density, g/cm3 8.4
9.3
Embodied Carbon, kg CO2/kg material 10
11
Embodied Energy, MJ/kg 140
170
Embodied Water, L/kg 340
98

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 23
21
Strength to Weight: Axial, points 42
23 to 64
Strength to Weight: Bending, points 31
20 to 40
Thermal Diffusivity, mm2/s 3.3
4.9
Thermal Shock Resistance, points 37
23 to 65

Alloy Composition

Aluminum (Al), % 1.2 to 1.6
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.030 to 0.1
0.8 to 0.9
Chromium (Cr), % 18 to 21
3.8 to 4.5
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
0 to 0.25
Iron (Fe), % 0 to 2.0
70.8 to 75.8
Manganese (Mn), % 0 to 1.0
0.2 to 0.4
Molybdenum (Mo), % 3.5 to 5.0
0 to 1.0
Nickel (Ni), % 49.6 to 62.5
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.75
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 2.8 to 3.3
0
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 0
1.8 to 2.4
Zinc (Zn), % 0.020 to 0.12
0