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EN 1.4941 Stainless Steel vs. EN 1.4466 Stainless Steel

Both EN 1.4941 stainless steel and EN 1.4466 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 79% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4941 stainless steel and the bottom bar is EN 1.4466 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
42
Fatigue Strength, MPa 180
250
Impact Strength: V-Notched Charpy, J 98
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Shear Strength, MPa 400
440
Tensile Strength: Ultimate (UTS), MPa 590
640
Tensile Strength: Yield (Proof), MPa 210
280

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 520
450
Maximum Temperature: Mechanical, °C 940
1100
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
14
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 16
28
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.3
5.0
Embodied Energy, MJ/kg 47
70
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 18
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
220
Resilience: Unit (Modulus of Resilience), kJ/m3 110
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
22
Strength to Weight: Bending, points 20
21
Thermal Diffusivity, mm2/s 4.3
3.7
Thermal Shock Resistance, points 13
14

Alloy Composition

Boron (B), % 0.0015 to 0.0050
0
Carbon (C), % 0.040 to 0.080
0 to 0.020
Chromium (Cr), % 17 to 19
24 to 26
Iron (Fe), % 65.1 to 73.6
45.6 to 52.9
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 9.0 to 12
21 to 23
Nitrogen (N), % 0
0.1 to 0.16
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0.4 to 0.8
0