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Nickel 625 vs. ACI-ASTM CG6MMN Steel

Nickel 625 belongs to the nickel alloys classification, while ACI-ASTM CG6MMN steel belongs to the iron alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is nickel 625 and the bottom bar is ACI-ASTM CG6MMN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 33 to 34
34
Fatigue Strength, MPa 240 to 320
260
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
79
Tensile Strength: Ultimate (UTS), MPa 790 to 910
670
Tensile Strength: Yield (Proof), MPa 320 to 450
320

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 980
1080
Melting Completion (Liquidus), °C 1350
1420
Melting Onset (Solidus), °C 1290
1380
Specific Heat Capacity, J/kg-K 440
480
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 80
22
Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 14
4.8
Embodied Energy, MJ/kg 190
68
Embodied Water, L/kg 290
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220 to 250
190
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 29
24
Strength to Weight: Bending, points 22 to 24
22
Thermal Shock Resistance, points 22 to 25
14

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0 to 0.060
Chromium (Cr), % 20 to 23
20.5 to 23.5
Cobalt (Co), % 0 to 1.0
0
Iron (Fe), % 0 to 5.0
51.9 to 62.1
Manganese (Mn), % 0 to 0.5
4.0 to 6.0
Molybdenum (Mo), % 8.0 to 10
1.5 to 3.0
Nickel (Ni), % 58 to 68.9
11.5 to 13.5
Niobium (Nb), % 3.2 to 4.2
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
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
Vanadium (V), % 0
0.1 to 0.3