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Nickel 685 vs. EN 1.4736 Stainless Steel

Nickel 685 belongs to the nickel alloys classification, while EN 1.4736 stainless steel belongs to the iron alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is nickel 685 and the bottom bar is EN 1.4736 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
170
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
28
Fatigue Strength, MPa 470
230
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 770
370
Tensile Strength: Ultimate (UTS), MPa 1250
580
Tensile Strength: Yield (Proof), MPa 850
310

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 1000
1000
Melting Completion (Liquidus), °C 1380
1420
Melting Onset (Solidus), °C 1330
1380
Specific Heat Capacity, J/kg-K 460
490
Thermal Conductivity, W/m-K 13
21
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 75
9.0
Density, g/cm3 8.4
7.6
Embodied Carbon, kg CO2/kg material 10
2.4
Embodied Energy, MJ/kg 140
35
Embodied Water, L/kg 340
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1820
250
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 42
21
Strength to Weight: Bending, points 31
20
Thermal Diffusivity, mm2/s 3.3
5.6
Thermal Shock Resistance, points 37
21

Alloy Composition

Aluminum (Al), % 1.2 to 1.6
1.7 to 2.1
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.030 to 0.1
0 to 0.040
Chromium (Cr), % 18 to 21
17 to 18
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 2.0
77 to 81.1
Manganese (Mn), % 0 to 1.0
0 to 1.0
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 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 2.8 to 3.3
0.2 to 0.8
Zinc (Zn), % 0.020 to 0.12
0