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Nickel 685 vs. EN 1.6958 Steel

Nickel 685 belongs to the nickel alloys classification, while EN 1.6958 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is nickel 685 and the bottom bar is EN 1.6958 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
340
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
16
Fatigue Strength, MPa 470
700
Poisson's Ratio 0.29
0.29
Reduction in Area, % 20
56
Shear Modulus, GPa 77
73
Shear Strength, MPa 770
700
Tensile Strength: Ultimate (UTS), MPa 1250
1140
Tensile Strength: Yield (Proof), MPa 850
1070

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 1000
450
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
47
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 75
5.0
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 10
2.0
Embodied Energy, MJ/kg 140
27
Embodied Water, L/kg 340
60

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
180
Resilience: Unit (Modulus of Resilience), kJ/m3 1820
3050
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 42
40
Strength to Weight: Bending, points 31
31
Thermal Diffusivity, mm2/s 3.3
13
Thermal Shock Resistance, points 37
39

Alloy Composition

Aluminum (Al), % 1.2 to 1.6
0.0050 to 0.050
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.030 to 0.1
0.25 to 0.3
Chromium (Cr), % 18 to 21
1.2 to 1.7
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 2.0
92.6 to 94.5
Manganese (Mn), % 0 to 1.0
0.2 to 0.5
Molybdenum (Mo), % 3.5 to 5.0
0.35 to 0.55
Nickel (Ni), % 49.6 to 62.5
3.3 to 3.8
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.75
0.15 to 0.3
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 2.8 to 3.3
0
Vanadium (V), % 0
0 to 0.12
Zinc (Zn), % 0.020 to 0.12
0