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S82441 Stainless Steel vs. AISI 418 Stainless Steel

Both S82441 stainless steel and AISI 418 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 S82441 stainless steel and the bottom bar is AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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