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Nickel 625 vs. AISI 201 Stainless Steel

Nickel 625 belongs to the nickel alloys classification, while AISI 201 stainless steel belongs to the iron alloys. They have a modest 25% 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 (4, in this case) are not shown.

For each property being compared, the top bar is nickel 625 and the bottom bar is AISI 201 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 33 to 34
4.6 to 51
Fatigue Strength, MPa 240 to 320
280 to 600
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 530 to 600
450 to 840
Tensile Strength: Ultimate (UTS), MPa 790 to 910
650 to 1450
Tensile Strength: Yield (Proof), MPa 320 to 450
300 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Maximum Temperature: Mechanical, °C 980
880
Melting Completion (Liquidus), °C 1350
1410
Melting Onset (Solidus), °C 1290
1370
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 11
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 80
12
Density, g/cm3 8.6
7.7
Embodied Carbon, kg CO2/kg material 14
2.6
Embodied Energy, MJ/kg 190
38
Embodied Water, L/kg 290
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220 to 250
61 to 340
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
230 to 2970
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 29
23 to 52
Strength to Weight: Bending, points 22 to 24
22 to 37
Thermal Diffusivity, mm2/s 2.9
4.0
Thermal Shock Resistance, points 22 to 25
14 to 32

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0 to 0.15
Chromium (Cr), % 20 to 23
16 to 18
Cobalt (Co), % 0 to 1.0
0
Iron (Fe), % 0 to 5.0
67.5 to 75
Manganese (Mn), % 0 to 0.5
5.5 to 7.5
Molybdenum (Mo), % 8.0 to 10
0
Nickel (Ni), % 58 to 68.9
3.5 to 5.5
Niobium (Nb), % 3.2 to 4.2
0
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.015
0 to 0.060
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0 to 0.4
0

Comparable Variants