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EN 1.4424 Stainless Steel vs. EN 1.4466 Stainless Steel

Both EN 1.4424 stainless steel and EN 1.4466 stainless steel are iron alloys. They have 76% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4424 stainless steel and the bottom bar is EN 1.4466 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
42
Fatigue Strength, MPa 350 to 370
250
Impact Strength: V-Notched Charpy, J 90 to 91
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
80
Shear Strength, MPa 520
440
Tensile Strength: Ultimate (UTS), MPa 800
640
Tensile Strength: Yield (Proof), MPa 480 to 500
280

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 960
1100
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 13
14
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 15
28
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.4
5.0
Embodied Energy, MJ/kg 46
70
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 29
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 200
220
Resilience: Unit (Modulus of Resilience), kJ/m3 580 to 640
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
22
Strength to Weight: Bending, points 25
21
Thermal Diffusivity, mm2/s 3.5
3.7
Thermal Shock Resistance, points 23
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.020
Chromium (Cr), % 18 to 19
24 to 26
Iron (Fe), % 68.6 to 72.4
45.6 to 52.9
Manganese (Mn), % 1.2 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.0
2.0 to 2.5
Nickel (Ni), % 4.5 to 5.2
21 to 23
Nitrogen (N), % 0.050 to 0.1
0.1 to 0.16
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 1.4 to 2.0
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.010