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AWS E383 vs. AISI 418 Stainless Steel

Both AWS E383 and AISI 418 stainless steel are iron alloys. They have 50% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is AWS E383 and the bottom bar is AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
17
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 580
1100

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1420
1500
Melting Onset (Solidus), °C 1370
1460
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
25
Thermal Expansion, µm/m-K 14
10

Otherwise Unclassified Properties

Base Metal Price, % relative 37
15
Density, g/cm3 8.1
8.0
Embodied Carbon, kg CO2/kg material 6.4
2.9
Embodied Energy, MJ/kg 89
41
Embodied Water, L/kg 240
110

Common Calculations

PREN (Pitting Resistance) 40
19
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
38
Strength to Weight: Bending, points 19
29
Thermal Diffusivity, mm2/s 3.1
6.7
Thermal Shock Resistance, points 15
40

Alloy Composition

Carbon (C), % 0 to 0.030
0.15 to 0.2
Chromium (Cr), % 26.5 to 29
12 to 14
Copper (Cu), % 0.6 to 1.5
0
Iron (Fe), % 28.8 to 39.2
78.5 to 83.6
Manganese (Mn), % 0.5 to 2.5
0 to 0.5
Molybdenum (Mo), % 3.2 to 4.2
0 to 0.5
Nickel (Ni), % 30 to 33
1.8 to 2.2
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.9
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 0
2.5 to 3.5