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AISI 440A Stainless Steel vs. EN 1.5503 Steel

Both AISI 440A stainless steel and EN 1.5503 steel are iron alloys. They have 82% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 440A stainless steel and the bottom bar is EN 1.5503 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 5.0 to 20
12 to 17
Fatigue Strength, MPa 270 to 790
180 to 280
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 450 to 1040
270 to 320
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
400 to 520
Tensile Strength: Yield (Proof), MPa 420 to 1650
270 to 430

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 760
400
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
52
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
1.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.4
Embodied Energy, MJ/kg 31
18
Embodied Water, L/kg 120
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
41 to 81
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 65
14 to 19
Strength to Weight: Bending, points 23 to 43
15 to 18
Thermal Diffusivity, mm2/s 6.2
14
Thermal Shock Resistance, points 26 to 65
12 to 15

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.6 to 0.75
0.16 to 0.2
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 78.4 to 83.4
98.4 to 99.239
Manganese (Mn), % 0 to 1.0
0.6 to 0.8
Molybdenum (Mo), % 0 to 0.75
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.3
Sulfur (S), % 0 to 0.015
0 to 0.025