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Nickel 625 vs. EN 1.4740 Stainless Steel

Nickel 625 belongs to the nickel alloys classification, while EN 1.4740 stainless steel belongs to the iron alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is nickel 625 and the bottom bar is EN 1.4740 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 33 to 34
22
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
77

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 980
900
Melting Completion (Liquidus), °C 1350
1420
Melting Onset (Solidus), °C 1290
1370
Specific Heat Capacity, J/kg-K 440
490
Thermal Conductivity, W/m-K 11
18
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
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 80
9.5
Density, g/cm3 8.6
7.6
Embodied Carbon, kg CO2/kg material 14
2.3
Embodied Energy, MJ/kg 190
32
Embodied Water, L/kg 290
120

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 2.9
4.8

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0.3 to 0.5
Chromium (Cr), % 20 to 23
16 to 19
Cobalt (Co), % 0 to 1.0
0
Iron (Fe), % 0 to 5.0
75.4 to 82.7
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 1.0
Niobium (Nb), % 3.2 to 4.2
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.5
1.0 to 2.5
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0 to 0.4
0