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AISI 440A Stainless Steel vs. Nickel 242

AISI 440A stainless steel belongs to the iron alloys classification, while nickel 242 belongs to the nickel alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 440A stainless steel and the bottom bar is nickel 242.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 5.0 to 20
45
Fatigue Strength, MPa 270 to 790
300
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 77
84
Shear Strength, MPa 450 to 1040
570
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
820
Tensile Strength: Yield (Proof), MPa 420 to 1650
350

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Mechanical, °C 760
930
Melting Completion (Liquidus), °C 1480
1380
Melting Onset (Solidus), °C 1370
1290
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 23
11
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
75
Density, g/cm3 7.7
9.0
Embodied Carbon, kg CO2/kg material 2.2
14
Embodied Energy, MJ/kg 31
180
Embodied Water, L/kg 120
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
300
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 26 to 65
25
Strength to Weight: Bending, points 23 to 43
21
Thermal Diffusivity, mm2/s 6.2
3.1
Thermal Shock Resistance, points 26 to 65
25

Alloy Composition

Aluminum (Al), % 0
0 to 0.5
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0.6 to 0.75
0 to 0.030
Chromium (Cr), % 16 to 18
7.0 to 9.0
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 78.4 to 83.4
0 to 2.0
Manganese (Mn), % 0 to 1.0
0 to 0.8
Molybdenum (Mo), % 0 to 0.75
24 to 26
Nickel (Ni), % 0
59.3 to 69
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.015