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EN 1.4611 Stainless Steel vs. AISI 446 Stainless Steel

Both EN 1.4611 stainless steel and AISI 446 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 95% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4611 stainless steel and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 21
23
Fatigue Strength, MPa 180
200
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 78
79
Shear Strength, MPa 330
360
Tensile Strength: Ultimate (UTS), MPa 530
570
Tensile Strength: Yield (Proof), MPa 280
300

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 530
440
Maximum Temperature: Mechanical, °C 970
1180
Melting Completion (Liquidus), °C 1440
1510
Melting Onset (Solidus), °C 1390
1430
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 21
17
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.5
2.4
Embodied Energy, MJ/kg 36
35
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 21
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 91
110
Resilience: Unit (Modulus of Resilience), kJ/m3 190
230
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 19
21
Strength to Weight: Bending, points 19
20
Thermal Diffusivity, mm2/s 5.7
4.6
Thermal Shock Resistance, points 18
19

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0 to 0.2
Chromium (Cr), % 19 to 22
23 to 27
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 73.3 to 80.8
69.2 to 77
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.5
0 to 0.75
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.050
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.030
Titanium (Ti), % 0.2 to 1.0
0