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EN 1.4369 Stainless Steel vs. EN 1.4466 Stainless Steel

Both EN 1.4369 stainless steel and EN 1.4466 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 77% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4369 stainless steel and the bottom bar is EN 1.4466 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
42
Fatigue Strength, MPa 330
250
Impact Strength: V-Notched Charpy, J 91
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Shear Strength, MPa 580
440
Tensile Strength: Ultimate (UTS), MPa 850
640
Tensile Strength: Yield (Proof), MPa 390
280

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 940
1100
Melting Completion (Liquidus), °C 1400
1420
Melting Onset (Solidus), °C 1360
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 14
28
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.0
5.0
Embodied Energy, MJ/kg 43
70
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 23
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
220
Resilience: Unit (Modulus of Resilience), kJ/m3 380
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31
22
Strength to Weight: Bending, points 26
21
Thermal Diffusivity, mm2/s 4.0
3.7
Thermal Shock Resistance, points 18
14

Alloy Composition

Carbon (C), % 0.070 to 0.15
0 to 0.020
Chromium (Cr), % 17.5 to 19.5
24 to 26
Iron (Fe), % 63 to 70.2
45.6 to 52.9
Manganese (Mn), % 5.0 to 7.5
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 6.5 to 8.5
21 to 23
Nitrogen (N), % 0.2 to 0.3
0.1 to 0.16
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.5 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.010