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EN 1.4410 Stainless Steel vs. EN 1.4446 Stainless Steel

Both EN 1.4410 stainless steel and EN 1.4446 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have a moderately high 92% 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 1.4410 stainless steel and the bottom bar is EN 1.4446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
140
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 24
23
Fatigue Strength, MPa 410
160
Impact Strength: V-Notched Charpy, J 90
56
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
79
Tensile Strength: Ultimate (UTS), MPa 850
490
Tensile Strength: Yield (Proof), MPa 600
240

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 1100
980
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 13
16

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 20
22
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.0
4.5
Embodied Energy, MJ/kg 56
60
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 42
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
93
Resilience: Unit (Modulus of Resilience), kJ/m3 880
140
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
17
Strength to Weight: Bending, points 26
17
Thermal Diffusivity, mm2/s 4.0
3.6
Thermal Shock Resistance, points 23
11

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 24 to 26
16.5 to 18.5
Iron (Fe), % 58.1 to 66.8
59.7 to 66.9
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 3.0 to 4.5
4.0 to 4.5
Nickel (Ni), % 6.0 to 8.0
12.5 to 14.5
Nitrogen (N), % 0.24 to 0.35
0.12 to 0.22
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030