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Nickel 625 vs. AISI 309Cb Stainless Steel

Nickel 625 belongs to the nickel alloys classification, while AISI 309Cb stainless steel belongs to the iron alloys. They have a modest 39% 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 nickel 625 and the bottom bar is AISI 309Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 33 to 34
39
Fatigue Strength, MPa 240 to 320
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
78
Shear Strength, MPa 530 to 600
390
Tensile Strength: Ultimate (UTS), MPa 790 to 910
580
Tensile Strength: Yield (Proof), MPa 320 to 450
230

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 980
1090
Melting Completion (Liquidus), °C 1350
1420
Melting Onset (Solidus), °C 1290
1380
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 11
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 80
23
Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 14
4.1
Embodied Energy, MJ/kg 190
59
Embodied Water, L/kg 290
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220 to 250
180
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 29
20
Strength to Weight: Bending, points 22 to 24
20
Thermal Diffusivity, mm2/s 2.9
4.0
Thermal Shock Resistance, points 22 to 25
13

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0 to 0.080
Chromium (Cr), % 20 to 23
22 to 24
Cobalt (Co), % 0 to 1.0
0
Iron (Fe), % 0 to 5.0
56 to 66
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 8.0 to 10
0
Nickel (Ni), % 58 to 68.9
12 to 16
Niobium (Nb), % 3.2 to 4.2
0 to 1.1
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0 to 0.4
0