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EN 1.4401 Stainless Steel vs. EN 1.4446 Stainless Steel

Both EN 1.4401 stainless steel and EN 1.4446 stainless steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4401 stainless steel and the bottom bar is EN 1.4446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 40
23
Fatigue Strength, MPa 200 to 320
160
Impact Strength: V-Notched Charpy, J 91 to 94
56
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
79
Tensile Strength: Ultimate (UTS), MPa 600 to 900
490
Tensile Strength: Yield (Proof), MPa 230 to 570
240

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 950
980
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 19
22
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 3.8
4.5
Embodied Energy, MJ/kg 52
60
Embodied Water, L/kg 150
160

Common Calculations

PREN (Pitting Resistance) 26
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
93
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 800
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 32
17
Strength to Weight: Bending, points 20 to 26
17
Thermal Diffusivity, mm2/s 4.0
3.6
Thermal Shock Resistance, points 13 to 20
11

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 16.5 to 18.5
16.5 to 18.5
Iron (Fe), % 62.8 to 71.5
59.7 to 66.9
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 2.0 to 2.5
4.0 to 4.5
Nickel (Ni), % 10 to 13
12.5 to 14.5
Nitrogen (N), % 0 to 0.1
0.12 to 0.22
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030