BM 280 HT

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Nickel Aluminum Bronze Alloys

BM 280 HT AMS 4590 / 4881

Available Formats

Chemical Composition

Copper ................................ Balance

Aluminum ........................... 10,0 - 11,0%
Iron ................................... 4,0 - 6,0%

Nickel ................................. 4,0 - 6,0%

Manganese Max ................... 1,5%

Others Max .......................... 0,5%

Physical and Mechanical Properties

Tensile Strength MPa ................... 650 - 896
Yield Strength MPa ...................... 400 - 724
Elongation 5% ............................. 4 - 10
Rockwell C Hardness ................... 26 - 30

Compressive Strength Rmc/Mpa .... 1034 - 1324
Density Kg/dm³ ........................... 7,45

NOTE: The referred values are merely informative and vary according to the manufacturing process, geometry and dimensions.

Application

This high-strength alloy, due to its special manufacturing process, exhibits superior mechanical properties compared to standard commercial nickel-aluminum bronzes. It was developed to meet the demands of the aeronautical industry and is recommended for applications requiring high mechanical properties, elevated temperatures, and excellent corrosion resistance. It complies with AMS 4590 (aerospace) specifications.

Applications include landing gear bearings, bushings for heavy loads, rolls and dies for tube forming, mold parts for the plastic and glass industry, and tools for tube bending with high wear resistance.