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Nickel 625 vs. EN 1.4418 Stainless Steel

Nickel 625 belongs to the nickel alloys classification, while EN 1.4418 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 EN 1.4418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 33 to 34
16 to 20
Fatigue Strength, MPa 240 to 320
350 to 480
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 530 to 600
530 to 620
Tensile Strength: Ultimate (UTS), MPa 790 to 910
860 to 1000
Tensile Strength: Yield (Proof), MPa 320 to 450
540 to 790

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Maximum Temperature: Mechanical, °C 980
870
Melting Completion (Liquidus), °C 1350
1450
Melting Onset (Solidus), °C 1290
1400
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 11
15
Thermal Expansion, µm/m-K 13
10

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
13
Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 14
2.8
Embodied Energy, MJ/kg 190
39
Embodied Water, L/kg 290
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220 to 250
130 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
730 to 1590
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 29
31 to 36
Strength to Weight: Bending, points 22 to 24
26 to 28
Thermal Diffusivity, mm2/s 2.9
4.0
Thermal Shock Resistance, points 22 to 25
31 to 36

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0 to 0.060
Chromium (Cr), % 20 to 23
15 to 17
Cobalt (Co), % 0 to 1.0
0
Iron (Fe), % 0 to 5.0
73.2 to 80.2
Manganese (Mn), % 0 to 0.5
0 to 1.5
Molybdenum (Mo), % 8.0 to 10
0.8 to 1.5
Nickel (Ni), % 58 to 68.9
4.0 to 6.0
Niobium (Nb), % 3.2 to 4.2
0
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0 to 0.4
0

Comparable Variants