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AISI 418 Stainless Steel vs. AWS E385

Both AISI 418 stainless steel and AWS E385 are iron alloys. They have 62% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AISI 418 stainless steel and the bottom bar is AWS E385.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
34
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 1100
580

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1500
1440
Melting Onset (Solidus), °C 1460
1390
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 25
14
Thermal Expansion, µm/m-K 10
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 15
31
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 2.9
5.8
Embodied Energy, MJ/kg 41
79
Embodied Water, L/kg 110
200

Common Calculations

PREN (Pitting Resistance) 19
36
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 38
20
Strength to Weight: Bending, points 29
19
Thermal Diffusivity, mm2/s 6.7
3.6
Thermal Shock Resistance, points 40
15

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.030
Chromium (Cr), % 12 to 14
19.5 to 21.5
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 78.5 to 83.6
41.8 to 50.1
Manganese (Mn), % 0 to 0.5
1.0 to 2.5
Molybdenum (Mo), % 0 to 0.5
4.2 to 5.2
Nickel (Ni), % 1.8 to 2.2
24 to 26
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.9
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 2.5 to 3.5
0