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Nickel 725 vs. S46910 Stainless Steel

Nickel 725 belongs to the nickel alloys classification, while S46910 stainless steel belongs to the iron alloys. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is nickel 725 and the bottom bar is S46910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
2.2 to 11
Fatigue Strength, MPa 260
250 to 1020
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
76
Shear Strength, MPa 580
410 to 1410
Tensile Strength: Ultimate (UTS), MPa 860
680 to 2470
Tensile Strength: Yield (Proof), MPa 350
450 to 2290

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 980
810
Melting Completion (Liquidus), °C 1340
1460
Melting Onset (Solidus), °C 1270
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 75
18
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 13
4.1
Embodied Energy, MJ/kg 190
55
Embodied Water, L/kg 270
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
48 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 300
510 to 4780
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28
24 to 86
Strength to Weight: Bending, points 24
22 to 51
Thermal Shock Resistance, points 23
23 to 84

Alloy Composition

Aluminum (Al), % 0 to 0.35
0.15 to 0.5
Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 19 to 22.5
11 to 13
Copper (Cu), % 0
1.5 to 3.5
Iron (Fe), % 2.3 to 15.3
65 to 76
Manganese (Mn), % 0 to 0.35
0 to 1.0
Molybdenum (Mo), % 7.0 to 9.5
3.0 to 5.0
Nickel (Ni), % 55 to 59
8.0 to 10
Niobium (Nb), % 2.8 to 4.0
0
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.2
0 to 0.7
Sulfur (S), % 0 to 0.010
0 to 0.015
Titanium (Ti), % 1.0 to 1.7
0.5 to 1.2