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ATI 409HP

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Journal Articles
Alloy Digest (2013) 62 (2): SS-1135.
Published: 01 February 2013
... ATI 409HP (UNS S40900) ferritic stainless steel was introduced by ATI Allegheny Ludlum to provide improved oxidation and corrosion resistance for automotive exhaust systems in comparison to carbon steel. The alloy was designated "MF-1", indicating its end use: automotive mufflers. The good...
Journal Articles
Alloy Digest (2013) 62 (9): SS-1157.
Published: 01 September 2013
... and the ATI 409HP and ATI 439HP alloys. See Fig. 2 for 100-hour oxidation in air and Fig. 3 for cyclic oxidation in air. Specification Equivalents: UNS S44100 ASTM A240 General Characteristics: ATI 441 HP alloy is a heat resisting ferritic grade that provides good oxidation and corrosion resistance...
Journal Articles
Alloy Digest (2013) 62 (7): SS-1150.
Published: 01 July 2013
... month (millimeters per annum) Medium ATI 441HP ATI 439HP ATI 409HP ATI 304 20% Acetic acid boiling 0.000 (0.000) 0.0003 (0.09) 0.010 (3.10) 0.00001 (0.003) 65% Nitric acid boiling 0.013 (3.96) 0.0020 (0.61) 0.027 (8.3) 0.0007 (0.22) 20% Phosphoric acid boiling 0.00005 (0.015) 0.00002 (0.006) 0.0017...
Journal Articles
Alloy Digest (2001) 50 (9): SS-829.
Published: 01 September 2001
... AL 439HP, AL 409HP, and AL 441HP are trademarks of ATI Properties, Inc. Fig. 1 Cyclic exhaust system condensate corrosion DOI: 10.31399/asm.ad.ss0829 runners where bend radii are often less than 2D. The AL 409HP, AL 439HP, and AL 441HP ferritic stainless steels have been developed specifically...
Journal Articles
Alloy Digest (2005) 54 (9): SS-939.
Published: 01 September 2005
... 409 ALMZ is an aluminum-coated type 409. The substrate is AL 409HP, and the coating is applied by a hot-dipping process. The coating improves corrosion and oxidation resistance. The product will pass 72 h salt spray with no red rust according to ASTM B 117. This datasheet provides information...
Journal Articles
Alloy Digest (2006) 55 (4): SS-958.
Published: 01 April 2006
... Steel) Allegheny Ludlum AL 453 Alloy is a ferritic stainless steel with low levels of rare earth metals added to reduce the growth rate of oxides at high temperatures. The enhanced oxidation resistance makes it applicable to high-temperature applications. AL 453 is trademark of ATI Properties, Inc. DOI...