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Nickel 684 vs. EN 1.4845 Stainless Steel

Nickel 684 belongs to the nickel alloys classification, while EN 1.4845 stainless steel belongs to the iron alloys. They have 41% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is nickel 684 and the bottom bar is EN 1.4845 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
38
Fatigue Strength, MPa 390
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 76
78
Shear Strength, MPa 710
410
Tensile Strength: Ultimate (UTS), MPa 1190
600
Tensile Strength: Yield (Proof), MPa 800
240

Thermal Properties

Latent Heat of Fusion, J/g 320
310
Maximum Temperature: Mechanical, °C 1000
1050
Melting Completion (Liquidus), °C 1370
1400
Melting Onset (Solidus), °C 1320
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 75
25
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 10
4.3
Embodied Energy, MJ/kg 140
61
Embodied Water, L/kg 360
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
180
Resilience: Unit (Modulus of Resilience), kJ/m3 1610
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 40
21
Strength to Weight: Bending, points 30
20
Thermal Shock Resistance, points 34
14

Alloy Composition

Aluminum (Al), % 2.5 to 3.3
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0 to 0.15
0 to 0.1
Chromium (Cr), % 15 to 20
24 to 26
Cobalt (Co), % 13 to 20
0
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 4.0
48.2 to 57
Manganese (Mn), % 0 to 0.75
0 to 2.0
Molybdenum (Mo), % 3.0 to 5.0
0
Nickel (Ni), % 42.7 to 64
19 to 22
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 2.5 to 3.3
0