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AISI 418 Stainless Steel vs. S82441 Stainless Steel

Both AISI 418 stainless steel and S82441 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 418 stainless steel and the bottom bar is S82441 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
28
Fatigue Strength, MPa 520
400
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Shear Strength, MPa 680
490
Tensile Strength: Ultimate (UTS), MPa 1100
760
Tensile Strength: Yield (Proof), MPa 850
550

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 390
440
Maximum Temperature: Mechanical, °C 770
1090
Melting Completion (Liquidus), °C 1500
1430
Melting Onset (Solidus), °C 1460
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
16
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 2.9
3.2
Embodied Energy, MJ/kg 41
45
Embodied Water, L/kg 110
170

Common Calculations

PREN (Pitting Resistance) 19
33
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
190
Resilience: Unit (Modulus of Resilience), kJ/m3 1830
740
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 38
27
Strength to Weight: Bending, points 29
24
Thermal Diffusivity, mm2/s 6.7
3.9
Thermal Shock Resistance, points 40
21

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.030
Chromium (Cr), % 12 to 14
23 to 25
Copper (Cu), % 0
0.1 to 0.8
Iron (Fe), % 78.5 to 83.6
62.6 to 70.2
Manganese (Mn), % 0 to 0.5
2.5 to 4.0
Molybdenum (Mo), % 0 to 0.5
1.0 to 2.0
Nickel (Ni), % 1.8 to 2.2
3.0 to 4.5
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.0050
Tungsten (W), % 2.5 to 3.5
0