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Nickel 685 vs. SAE-AISI T15 Steel

Nickel 685 belongs to the nickel alloys classification, while SAE-AISI T15 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 T15 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
76
Tensile Strength: Ultimate (UTS), MPa 1250
830 to 2240

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1380
1690
Melting Onset (Solidus), °C 1330
1640
Specific Heat Capacity, J/kg-K 460
430
Thermal Conductivity, W/m-K 13
21
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
43
Density, g/cm3 8.4
8.7
Embodied Carbon, kg CO2/kg material 10
16
Embodied Energy, MJ/kg 140
250
Embodied Water, L/kg 340
140

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 42
26 to 71
Strength to Weight: Bending, points 31
22 to 43
Thermal Diffusivity, mm2/s 3.3
5.6
Thermal Shock Resistance, points 37
26 to 70

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
1.5 to 1.6
Chromium (Cr), % 18 to 21
3.8 to 5.0
Cobalt (Co), % 12 to 15
4.8 to 5.3
Copper (Cu), % 0 to 0.5
0 to 0.25
Iron (Fe), % 0 to 2.0
67.5 to 73.5
Manganese (Mn), % 0 to 1.0
0.15 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
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 2.8 to 3.3
0
Tungsten (W), % 0
11.8 to 13
Vanadium (V), % 0
4.5 to 5.3
Zinc (Zn), % 0.020 to 0.12
0