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EN 1.3555 Steel vs. AISI 440B Stainless Steel

Both EN 1.3555 steel and AISI 440B stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 23 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 EN 1.3555 steel and the bottom bar is AISI 440B stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

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
740 to 1930

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Maximum Temperature: Mechanical, °C 540
870
Melting Completion (Liquidus), °C 1500
1480
Melting Onset (Solidus), °C 1450
1370
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.6
2.2
Embodied Energy, MJ/kg 81
31
Embodied Water, L/kg 90
120

Common Calculations

PREN (Pitting Resistance) 18
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27
27 to 70
Strength to Weight: Bending, points 23
24 to 45
Thermal Shock Resistance, points 22
27 to 70

Alloy Composition

Carbon (C), % 0.1 to 0.15
0.75 to 1.0
Chromium (Cr), % 3.9 to 4.3
16 to 18
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 85.4 to 87.7
78.2 to 83.3
Manganese (Mn), % 0.15 to 0.35
0 to 1.0
Molybdenum (Mo), % 4.0 to 4.5
0 to 0.75
Nickel (Ni), % 3.2 to 3.6
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0.1 to 0.25
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015
Tungsten (W), % 0 to 0.15
0
Vanadium (V), % 1.0 to 1.3
0