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AISI 439 Stainless Steel vs. Nickel 617

AISI 439 stainless steel belongs to the iron alloys classification, while nickel 617 belongs to the nickel alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AISI 439 stainless steel and the bottom bar is nickel 617.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 23
40
Fatigue Strength, MPa 170
220
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
80
Shear Strength, MPa 310
510
Tensile Strength: Ultimate (UTS), MPa 490
740
Tensile Strength: Yield (Proof), MPa 250
280

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Mechanical, °C 890
1010
Melting Completion (Liquidus), °C 1510
1380
Melting Onset (Solidus), °C 1430
1330
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 25
13
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
75
Density, g/cm3 7.7
8.5
Embodied Carbon, kg CO2/kg material 2.3
10
Embodied Energy, MJ/kg 34
140
Embodied Water, L/kg 120
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
230
Resilience: Unit (Modulus of Resilience), kJ/m3 160
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 18
21
Thermal Diffusivity, mm2/s 6.7
3.5
Thermal Shock Resistance, points 16
21

Alloy Composition

Aluminum (Al), % 0 to 0.15
0.8 to 1.5
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0 to 0.030
0.050 to 0.15
Chromium (Cr), % 17 to 19
20 to 24
Cobalt (Co), % 0
10 to 15
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 77.1 to 82.8
0 to 3.0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
8.0 to 10
Nickel (Ni), % 0 to 0.5
44.5 to 62
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0.2 to 1.1
0