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Nickel 625 vs. ACI-ASTM CN7M Steel

Nickel 625 belongs to the nickel alloys classification, while ACI-ASTM CN7M steel belongs to the iron alloys. They have 55% of their average alloy composition in common. There are 29 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 ACI-ASTM CN7M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 33 to 34
44
Fatigue Strength, MPa 240 to 320
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 790 to 910
480
Tensile Strength: Yield (Proof), MPa 320 to 450
200

Thermal Properties

Latent Heat of Fusion, J/g 330
310
Maximum Temperature: Mechanical, °C 980
1100
Melting Completion (Liquidus), °C 1350
1410
Melting Onset (Solidus), °C 1290
1450
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 11
21
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 80
32
Density, g/cm3 8.6
8.1
Embodied Carbon, kg CO2/kg material 14
5.6
Embodied Energy, MJ/kg 190
78
Embodied Water, L/kg 290
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220 to 250
170
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26 to 29
17
Strength to Weight: Bending, points 22 to 24
17
Thermal Diffusivity, mm2/s 2.9
5.6
Thermal Shock Resistance, points 22 to 25
12

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0 to 0.070
Chromium (Cr), % 20 to 23
19 to 22
Cobalt (Co), % 0 to 1.0
0
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 0 to 5.0
37.4 to 48.5
Manganese (Mn), % 0 to 0.5
0 to 1.5
Molybdenum (Mo), % 8.0 to 10
2.0 to 3.0
Nickel (Ni), % 58 to 68.9
27.5 to 30.5
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 1.5
Sulfur (S), % 0 to 0.015
0 to 0.040
Titanium (Ti), % 0 to 0.4
0