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AISI 440C Stainless Steel vs. EN 1.3551 Steel

Both AISI 440C stainless steel and EN 1.3551 steel are iron alloys. They have 86% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AISI 440C stainless steel and the bottom bar is EN 1.3551 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 710 to 1970
720

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 870
530
Melting Completion (Liquidus), °C 1480
1490
Melting Onset (Solidus), °C 1370
1450
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 22
36
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
8.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
9.0
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.2
4.9
Embodied Energy, MJ/kg 31
71
Embodied Water, L/kg 120
82

Common Calculations

PREN (Pitting Resistance) 18
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 71
26
Strength to Weight: Bending, points 23 to 46
23
Thermal Diffusivity, mm2/s 6.0
9.8
Thermal Shock Resistance, points 26 to 71
21

Alloy Composition

Carbon (C), % 1.0 to 1.2
0.77 to 0.85
Chromium (Cr), % 16 to 18
3.9 to 4.3
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 78 to 83.1
88.8 to 91.1
Manganese (Mn), % 0 to 1.0
0.15 to 0.35
Molybdenum (Mo), % 0 to 0.75
4.0 to 4.5
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 0
0 to 0.25
Vanadium (V), % 0
0.9 to 1.1