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EN 1.4508 Stainless Steel vs. EN 1.4466 Stainless Steel

Both EN 1.4508 stainless steel and EN 1.4466 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 82% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4508 stainless steel and the bottom bar is EN 1.4466 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
42
Fatigue Strength, MPa 210
250
Impact Strength: V-Notched Charpy, J 90
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
80
Tensile Strength: Ultimate (UTS), MPa 570
640
Tensile Strength: Yield (Proof), MPa 260
280

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1000
1100
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 20
28
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.0
5.0
Embodied Energy, MJ/kg 55
70
Embodied Water, L/kg 160
200

Common Calculations

PREN (Pitting Resistance) 32
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
220
Resilience: Unit (Modulus of Resilience), kJ/m3 170
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
22
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 4.1
3.7
Thermal Shock Resistance, points 17
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.020
Chromium (Cr), % 18 to 20
24 to 26
Iron (Fe), % 61.2 to 69.9
45.6 to 52.9
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 3.0 to 3.5
2.0 to 2.5
Nickel (Ni), % 9.0 to 12
21 to 23
Nitrogen (N), % 0.1 to 0.2
0.1 to 0.16
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.5
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.010