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AISI 444 Stainless Steel vs. Nickel 908

AISI 444 stainless steel belongs to the iron alloys classification, while nickel 908 belongs to the nickel alloys. They have 47% 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 AISI 444 stainless steel and the bottom bar is nickel 908.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 23
11
Fatigue Strength, MPa 210
450
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 78
70
Shear Strength, MPa 300
800
Tensile Strength: Ultimate (UTS), MPa 470
1340
Tensile Strength: Yield (Proof), MPa 310
930

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Mechanical, °C 930
920
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 23
11
Thermal Expansion, µm/m-K 10
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 15
50
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 3.4
9.3
Embodied Energy, MJ/kg 47
140
Embodied Water, L/kg 130
170

Common Calculations

PREN (Pitting Resistance) 26
4.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
140
Resilience: Unit (Modulus of Resilience), kJ/m3 240
2340
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 17
45
Strength to Weight: Bending, points 17
33
Thermal Diffusivity, mm2/s 6.2
2.9
Thermal Shock Resistance, points 16
61

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.3
Boron (B), % 0
0 to 0.012
Carbon (C), % 0 to 0.025
0 to 0.030
Chromium (Cr), % 17.5 to 19.5
3.8 to 4.5
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 73.3 to 80.8
35.6 to 44.6
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 1.8 to 2.5
0
Nickel (Ni), % 0 to 1.0
47 to 51
Niobium (Nb), % 0.2 to 0.8
2.7 to 3.3
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.0050
Titanium (Ti), % 0.2 to 0.8
1.2 to 1.8