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Nickel 625 vs. AISI 420 Stainless Steel

Nickel 625 belongs to the nickel alloys classification, while AISI 420 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is nickel 625 and the bottom bar is AISI 420 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 33 to 34
8.0 to 15
Fatigue Strength, MPa 240 to 320
220 to 670
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
76
Shear Strength, MPa 530 to 600
420 to 1010
Tensile Strength: Ultimate (UTS), MPa 790 to 910
690 to 1720
Tensile Strength: Yield (Proof), MPa 320 to 450
380 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Maximum Temperature: Mechanical, °C 980
620
Melting Completion (Liquidus), °C 1350
1510
Melting Onset (Solidus), °C 1290
1450
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 11
27
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 80
7.5
Density, g/cm3 8.6
7.7
Embodied Carbon, kg CO2/kg material 14
2.0
Embodied Energy, MJ/kg 190
28
Embodied Water, L/kg 290
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220 to 250
88 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
380 to 4410
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 29
25 to 62
Strength to Weight: Bending, points 22 to 24
22 to 41
Thermal Diffusivity, mm2/s 2.9
7.3
Thermal Shock Resistance, points 22 to 25
25 to 62

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0.15 to 0.4
Chromium (Cr), % 20 to 23
12 to 14
Cobalt (Co), % 0 to 1.0
0
Iron (Fe), % 0 to 5.0
82.3 to 87.9
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 8.0 to 10
0 to 0.5
Nickel (Ni), % 58 to 68.9
0 to 0.75
Niobium (Nb), % 3.2 to 4.2
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
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