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EN 1.4618 Stainless Steel vs. Nickel 684

EN 1.4618 stainless steel belongs to the iron alloys classification, while nickel 684 belongs to the nickel alloys. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.4618 stainless steel and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
310
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
11
Fatigue Strength, MPa 240 to 250
390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
76
Shear Strength, MPa 480 to 500
710
Tensile Strength: Ultimate (UTS), MPa 680 to 700
1190
Tensile Strength: Yield (Proof), MPa 250 to 260
800

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 900
1000
Melting Completion (Liquidus), °C 1400
1370
Melting Onset (Solidus), °C 1360
1320
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 13
75
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 2.7
10
Embodied Energy, MJ/kg 39
140
Embodied Water, L/kg 150
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
120
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
1610
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 24 to 25
40
Strength to Weight: Bending, points 22 to 23
30
Thermal Shock Resistance, points 15 to 16
34

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.1
0 to 0.15
Chromium (Cr), % 16.5 to 18.5
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 1.0 to 2.5
0 to 0.15
Iron (Fe), % 62.7 to 72.5
0 to 4.0
Manganese (Mn), % 5.5 to 9.5
0 to 0.75
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 4.5 to 5.5
42.7 to 64
Nitrogen (N), % 0 to 0.15
0
Phosphorus (P), % 0 to 0.070
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3