MakeItFrom.com
Menu (ESC)

Nickel 725 vs. AISI 441 Stainless Steel

Nickel 725 belongs to the nickel alloys classification, while AISI 441 stainless steel belongs to the iron alloys. They have a modest 29% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 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 AISI 441 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
23
Fatigue Strength, MPa 260
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 580
300
Tensile Strength: Ultimate (UTS), MPa 860
470
Tensile Strength: Yield (Proof), MPa 350
270

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 980
910
Melting Completion (Liquidus), °C 1340
1440
Melting Onset (Solidus), °C 1270
1400
Specific Heat Capacity, J/kg-K 440
480
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 75
13
Density, g/cm3 8.5
7.7
Embodied Carbon, kg CO2/kg material 13
2.8
Embodied Energy, MJ/kg 190
41
Embodied Water, L/kg 270
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
92
Resilience: Unit (Modulus of Resilience), kJ/m3 300
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28
17
Strength to Weight: Bending, points 24
17
Thermal Shock Resistance, points 23
16

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 19 to 22.5
17.5 to 19.5
Iron (Fe), % 2.3 to 15.3
76 to 82.2
Manganese (Mn), % 0 to 0.35
0 to 1.0
Molybdenum (Mo), % 7.0 to 9.5
0
Nickel (Ni), % 55 to 59
0 to 1.0
Niobium (Nb), % 2.8 to 4.0
0.3 to 0.9
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 1.0 to 1.7
0.1 to 0.5