AeroMat Home      ASM Homepage
Back to "Emerging Materials and Processes IV - Materials II" Search
  Back to "Emerging Materials and Processes" Search  Back to Main Search

Wednesday, June 25, 2008 - 9:00 AM

A Very High Strength PH Stainless Steel For 280ksi, MLX19

A. Tronche, AUBERT & DUVAL, Gennevilliers, France

 AUBERT & DUVAL alloy, MLX19, is a very high strength PH stainless steel recently introduced by the RetD department . The alloy continues a series of high strength, high fracture toughness, and corrosion resistant PH steels from AUBERT&DUVAL. This series of alloys, already widely used in the Aerospace industry, provided solutions ranging from 150 to 250ksi, extended now to 280ksi. Thereby, replacement of cadmium or chromium plated low carbon steels like 300M may be considered. Additionally, the alloy offers Aerospace manufacturers certain fabrication benefits.

 MLX19 is non Carbon, non Cobalt containing steel. The applied heat treatment is a standard PH steel treatment. The alloy therefore presents the advantage of simple heat treatment with low distortions during ageing, weldability and high corrosion resistance. The grade is also well adapted to manufacturing of die forged products.

 The metallurgy along with the characteristics of the grade will be discussed, and will be compared to those of other high strength PH grades including MLX17.


Summary: AUBERT & DUVAL alloy, MLX19, is a very high strength PH stainless steel recently introduced by the RetD department . The alloy continues a series of high strength, high fracture toughness, and corrosion resistant PH steels from AUBERT&DUVAL. This series of alloys, already widely used in the Aerospace industry, provided solutions ranging from 150 to 250ksi, extended now to 280ksi. Thereby, replacement of cadmium or chromium plated low carbon steels like 300M may be considered. Additionally, the alloy offers Aerospace manufacturers certain fabrication benefits. MLX19 is non Carbon, non Cobalt containing steel. The applied heat treatment is a standard PH steel treatment. The alloy therefore presents the advantage of simple heat treatment with low distortions during ageing, weldability and high corrosion resistance. The grade is also well adapted to manufacturing of die forged products. The metallurgy along with the characteristics of the grade will be discussed, and will be compared to those of other high strength PH grades including MLX17.