Ultra-strength combined with extreme temperature capabilities

• Extreme high strength properties up to 275 ksi ultimate tensile.
• Maintains superior strength to 1100°F.
• MP159 chemisty and specification
• Datasheet for MP159
• MP159 pan head screw features & benefits

As aerospace engineering advances, so must the materials to meet the technological requirements of this industry. Screws made from MP159 have been developed to provide a solution to high temperature, high strength components. MP159 pan head screws offer strength capabilities similar to other Cobalt Alloys (MP35N) but can be used at much higher temperatures - up to 1100°F, compared to MP35N’s usable limit of 800F. In addition, MP159 pan head screws can be used beyond 1100°F in short term situations.

Key Benefits

• High ultimate tensile strength of 275 ksi and yield strength of 265 ksi (Cold Worked and Age Hardened) combined with excellent ductility and toughness
• Similar corrosion resistance compared to MP35N which is usable in mineral acids, hydrogen sulfide, seawater and salt spray environments.
• Excellent fatigue resistance and creep strength at elevated temperatures
• Excellent resistance to crevice corrosion, stress corrosion cracking and hydrogen embrittlement

Applications

• The aerospace industry relies on MP159 screws for its most advanced gas turbine and jet engines, rocket boosters and jet propulsion systems.
• Power generation and chemical processing utilize MP159 pan head screws for applications that demand high strength at extreme temperatures.

Resources: MP159 Torque Spec

MP159 Screw Types:  12 Point Screws, Button Head Cap Screws, Flat Head Screws, Hex Cap Screws, Hex Cap Screws, Set Screws, Socket Head Cap Screws, Tamper Resistant Security Screws

MP159 Pan Head Screw Features and Benefits

Pan head screws are flat on top and rounded on the sides. MP159 pan head screws are ideal for:
•  Small diameter fasteners – especially when the fastener size needed is too small for a wrench.
•  When phillips or slotted drivers are desired. For many high strength specialty alloys, only slotted drives are available.
•  Low torque applications because the drivers don’t offer as much force as a wrench.
•  Large diameter head provides more clamping area.

How Are They Different from Button Head Screws?
MP159 pan head and button head screws have very similar profiles however, button head screws allow for a hex socket driver whereas pan head screws do not.

MP159 Chemistry and Specifications

MP159N Specifications: UNS R30159

MP159 High Strength Data