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ATI Allegheny Ludlum ALFA-II™ Stainless Steel Type 406

Category Metal , Ferrous Metal , Stainless Steel , T 400 Series Stainless Steel
Manufacturer ATI Allegheny Ludlum
Trade Name ALFA-II™
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF ATI Allegheny Ludlum ALFA-II™ Stainless Steel Type 406.pdf
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Material Notes:
Characteristics:superior oxidation resistance for the temperature range 1600°F-over 2200°F, high electrical resistivity, high resistance to sulfidation, high resistance to carburization. Applications:automotive exhaust system components, furnace parts, heat exchangers, recuperator parts, kiln lining, refractory reinforcement fibers.Information provided by Allegheny Ludlum
Physical Properties Metric English Comments
Density 7.34 g/cc
0.265 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell B 89
89
Tensile Strength, Ultimate 554 MPa
80400 psi
Tensile Strength, Yield 412 MPa
59800 psi
Elongation at Break 28 %
28 %
in 2"
Thermal Properties Metric English Comments
CTE, linear 11.3 µm/m-°C

@Temperature 20.0 - 200 °C
6.28 µin/in-°F

@Temperature 68.0 - 392 °F
12.2 µm/m-°C

@Temperature 20.0 - 500 °C
6.78 µin/in-°F

@Temperature 68.0 - 932 °F
14.2 µm/m-°C

@Temperature 20.0 - 1000 °C
7.89 µin/in-°F

@Temperature 68.0 - 1830 °F
Component Elements Properties Metric English Comments
Aluminum, Al 4.0 %
4.0 %
Carbon, C 0.025 %
0.025 %
Chromium, Cr 13 %
13 %
Iron, Fe 82.76 %
82.76 %
As Remainder
Manganese, Mn 0.035 %
0.035 %
Silicon, Si 0.30 %
0.30 %
Titanium, Ti 0.40 %
0.40 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.000120 ohm-cm

@Temperature 20.0 °C
0.000120 ohm-cm

@Temperature 68.0 °F
0.000120 ohm-cm

@Temperature 204 °C
0.000120 ohm-cm

@Temperature 399 °F
0.000125 ohm-cm

@Temperature 427 °C
0.000125 ohm-cm

@Temperature 801 °F
0.000134 ohm-cm

@Temperature 649 °C
0.000134 ohm-cm

@Temperature 1200 °F
Descriptive Properties Value Comments
Anodic Polarization Ep=0.28 volts vs. saturated calomel electrode, Er=-0.17 volts vs. saturated calomel electrode
1000 ppm Cl-(NaCl) pH5
IC=2.0mA/cm2
1 Normal H2SO4
Corrosion Rate mils per year 0.04
20% Acetic Acid
1.85
20% Phosphoric Acid
1803.1
10% Sodium Bisulfate
3549.9
10% Sulfamic Acid
399.24
10% Oxalic Acid
8.64
65% Nitric Acid
Crevice Corrosion-Average Weight Loss, g/cm2 0.0336 (21.1°C, 72 Hours, Plain)
10% Ferric Chloride Rubber Band Test
0.327 (21.1°C, 72 Hours, Welded)
10% Ferric Chloride Rubber Band Test
Stress Corrosion Cracking Resistance No cracks (Plain and Welded)
33% Lithium Chloride(500 hours), 42% Magnesium Chloride(200 hours), 26% Sodium Chloride(1000 hours), 50% Sodium Hydroxide(200 hours)
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