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EN 1.3555 Steel vs. AISI 418 Stainless Steel

Both EN 1.3555 steel and AISI 418 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.3555 steel and the bottom bar is AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
330
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 770
1100

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 540
770
Melting Completion (Liquidus), °C 1500
1500
Melting Onset (Solidus), °C 1450
1460
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 11
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 11
15
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 5.6
2.9
Embodied Energy, MJ/kg 81
41
Embodied Water, L/kg 90
110

Common Calculations

PREN (Pitting Resistance) 18
19
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27
38
Strength to Weight: Bending, points 23
29
Thermal Shock Resistance, points 22
40

Alloy Composition

Carbon (C), % 0.1 to 0.15
0.15 to 0.2
Chromium (Cr), % 3.9 to 4.3
12 to 14
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 85.4 to 87.7
78.5 to 83.6
Manganese (Mn), % 0.15 to 0.35
0 to 0.5
Molybdenum (Mo), % 4.0 to 4.5
0 to 0.5
Nickel (Ni), % 3.2 to 3.6
1.8 to 2.2
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0.1 to 0.25
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 0 to 0.15
2.5 to 3.5
Vanadium (V), % 1.0 to 1.3
0