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AISI 405 Stainless Steel vs. Nickel 684

AISI 405 stainless steel belongs to the iron alloys classification, while nickel 684 belongs to the nickel alloys. There are 28 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 AISI 405 stainless steel and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
310
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 22
11
Fatigue Strength, MPa 130
390
Poisson's Ratio 0.28
0.29
Reduction in Area, % 51
17
Shear Modulus, GPa 76
76
Shear Strength, MPa 300
710
Tensile Strength: Ultimate (UTS), MPa 470
1190
Tensile Strength: Yield (Proof), MPa 200
800

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 820
1000
Melting Completion (Liquidus), °C 1530
1370
Melting Onset (Solidus), °C 1480
1320
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
75
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 2.0
10
Embodied Energy, MJ/kg 28
140
Embodied Water, L/kg 100
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
120
Resilience: Unit (Modulus of Resilience), kJ/m3 100
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 16
34

Alloy Composition

Aluminum (Al), % 0.1 to 0.3
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.080
0 to 0.15
Chromium (Cr), % 11.5 to 14.5
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 82.5 to 88.4
0 to 4.0
Manganese (Mn), % 0 to 1.0
0 to 0.75
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 0 to 0.6
42.7 to 64
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