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Nickel 684 vs. AISI 301LN Stainless Steel

Nickel 684 belongs to the nickel alloys classification, while AISI 301LN stainless steel belongs to the iron alloys. They have a modest 27% 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 (7, in this case) are not shown.

For each property being compared, the top bar is nickel 684 and the bottom bar is AISI 301LN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
210 to 320
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
23 to 51
Fatigue Strength, MPa 390
270 to 520
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 710
450 to 670
Tensile Strength: Ultimate (UTS), MPa 1190
630 to 1060
Tensile Strength: Yield (Proof), MPa 800
270 to 770

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 1000
890
Melting Completion (Liquidus), °C 1370
1430
Melting Onset (Solidus), °C 1320
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 75
13
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 10
2.7
Embodied Energy, MJ/kg 140
39
Embodied Water, L/kg 360
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
220 to 290
Resilience: Unit (Modulus of Resilience), kJ/m3 1610
180 to 1520
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 40
22 to 38
Strength to Weight: Bending, points 30
21 to 30
Thermal Shock Resistance, points 34
14 to 24

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 0.030
Chromium (Cr), % 15 to 20
16 to 18
Cobalt (Co), % 13 to 20
0
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 4.0
70.7 to 77.9
Manganese (Mn), % 0 to 0.75
0 to 2.0
Molybdenum (Mo), % 3.0 to 5.0
0
Nickel (Ni), % 42.7 to 64
6.0 to 8.0
Nitrogen (N), % 0
0.070 to 0.2
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 2.5 to 3.3
0