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EN 1.4446 Stainless Steel vs. Nickel 684

EN 1.4446 stainless steel belongs to the iron alloys classification, while nickel 684 belongs to the nickel alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.4446 stainless steel and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
310
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
11
Fatigue Strength, MPa 160
390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 490
1190
Tensile Strength: Yield (Proof), MPa 240
800

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Mechanical, °C 980
1000
Melting Completion (Liquidus), °C 1460
1370
Melting Onset (Solidus), °C 1410
1320
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 22
75
Density, g/cm3 7.9
8.3
Embodied Carbon, kg CO2/kg material 4.5
10
Embodied Energy, MJ/kg 60
140
Embodied Water, L/kg 160
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
120
Resilience: Unit (Modulus of Resilience), kJ/m3 140
1610
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 17
40
Strength to Weight: Bending, points 17
30
Thermal Shock Resistance, points 11
34

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 16.5 to 18.5
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 59.7 to 66.9
0 to 4.0
Manganese (Mn), % 0 to 1.5
0 to 0.75
Molybdenum (Mo), % 4.0 to 4.5
3.0 to 5.0
Nickel (Ni), % 12.5 to 14.5
42.7 to 64
Nitrogen (N), % 0.12 to 0.22
0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3