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EN 1.4911 Stainless Steel vs. EN 1.4446 Stainless Steel

Both EN 1.4911 stainless steel and EN 1.4446 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 31 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 1.4911 stainless steel and the bottom bar is EN 1.4446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
23
Fatigue Strength, MPa 530
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 1070
490
Tensile Strength: Yield (Proof), MPa 970
240

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 430
410
Maximum Temperature: Mechanical, °C 700
980
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 20
14
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 20
22
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 3.4
4.5
Embodied Energy, MJ/kg 49
60
Embodied Water, L/kg 130
160

Common Calculations

PREN (Pitting Resistance) 14
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
93
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 30
17
Thermal Diffusivity, mm2/s 5.4
3.6
Thermal Shock Resistance, points 37
11

Alloy Composition

Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0 to 0.030
Chromium (Cr), % 9.8 to 11.2
16.5 to 18.5
Cobalt (Co), % 5.0 to 7.0
0
Iron (Fe), % 75.7 to 83.8
59.7 to 66.9
Manganese (Mn), % 0.3 to 1.3
0 to 1.5
Molybdenum (Mo), % 0.5 to 1.0
4.0 to 4.5
Nickel (Ni), % 0.2 to 1.2
12.5 to 14.5
Niobium (Nb), % 0.2 to 0.5
0
Nitrogen (N), % 0 to 0.035
0.12 to 0.22
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.1 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0