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Nickel 685 vs. SAE-AISI 1055 Steel

Nickel 685 belongs to the nickel alloys classification, while SAE-AISI 1055 steel belongs to the iron alloys. There are 30 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 nickel 685 and the bottom bar is SAE-AISI 1055 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
220
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
11 to 14
Fatigue Strength, MPa 470
260 to 390
Poisson's Ratio 0.29
0.29
Reduction in Area, % 20
34 to 45
Shear Modulus, GPa 77
72
Shear Strength, MPa 770
440 to 450
Tensile Strength: Ultimate (UTS), MPa 1250
730 to 750
Tensile Strength: Yield (Proof), MPa 850
400 to 630

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 1000
400
Melting Completion (Liquidus), °C 1380
1460
Melting Onset (Solidus), °C 1330
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 13
51
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
1.8
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 10
1.4
Embodied Energy, MJ/kg 140
18
Embodied Water, L/kg 340
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
80 to 85
Resilience: Unit (Modulus of Resilience), kJ/m3 1820
440 to 1070
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 42
26
Strength to Weight: Bending, points 31
23
Thermal Diffusivity, mm2/s 3.3
14
Thermal Shock Resistance, points 37
23 to 24

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
0.5 to 0.6
Chromium (Cr), % 18 to 21
0
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 2.0
98.4 to 98.9
Manganese (Mn), % 0 to 1.0
0.6 to 0.9
Molybdenum (Mo), % 3.5 to 5.0
0
Nickel (Ni), % 49.6 to 62.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0 to 0.050
Titanium (Ti), % 2.8 to 3.3
0
Zinc (Zn), % 0.020 to 0.12
0