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455 Stainless Steel

What is 455 Stainless Steel?

455 stainless steel is a high-strength, corrosion-resistant martensitic alloy designed for demanding applications across industries such as aerospace, automotive, marine, and medical equipment. Its unique composition—containing chromium, nickel, and molybdenum—delivers an excellent balance of strength, toughness, and resistance to harsh environments.

Key Properties of 455 Stainless Steel

  • High Strength – Capable of handling heavy loads and stress, making it suitable for structural applications and fasteners.
  • Corrosion Resistance – Performs well in marine, chemical, and other corrosive environments.
  • Heat Treatable – Can be strengthened further through heat treatment, providing flexibility for high-performance applications.
  • Good Machinability & Weldability – Easier to process compared to many other high-strength alloys, saving time and cost in manufacturing.

Applications of 455 Stainless Steel

Due to its durability and versatility, 455 stainless steel bar is commonly used in:

  • Aerospace components requiring strength and corrosion resistance
  • Automotive fasteners and structural parts
  • Marine and offshore equipment exposed to saltwater
  • Chemical processing equipment
  • Medical instruments and precision components

Partner with Mozaic Precision Metals

At Mozaic Precision Metals, we supply precision-ground 455 stainless steel bar stock tailored to your exact specifications. With finishing services such as grinding, polishing, cutting, and chamfering, we ensure superior performance, accuracy, and long-term durability for every order.

For industries requiring a reliable high-strength alloy, 455 stainless steel from Mozaic is the proven choice.

Applications of 455 Stainless Steel Bar

455 stainless steel is a high-strength, corrosion-resistant martensitic alloy widely used across industries that demand durability, precision, and performance. Its unique balance of properties makes it suitable for critical applications, including:

  • Aerospace: Landing gear components, engine mounts, and structural parts requiring strength under extreme conditions.
  • Automotive: Engine components, suspension parts, and exhaust systems where wear resistance and corrosion protection are essential.
  • Medical Equipment: Surgical instruments, dental tools, and implantable devices thanks to its biocompatibility and corrosion resistance.
  • Food Processing: Conveyors, mixers, and tanks that must withstand acidic foods and frequent cleaning agents.
  • Marine: Propellers, marine hardware, and underwater equipment requiring toughness and saltwater corrosion resistance.

 

Key Properties of 455 Stainless Steel

Engineered with chromium, nickel, and molybdenum, 455 stainless steel bar delivers a superior combination of strength, corrosion resistance, and workability. Notable properties include:

  • Corrosion Resistance: Enhanced by 5% molybdenum for superior resistance to pitting and crevice corrosion, even in marine and chemical environments.
  • High Strength: Tensile strength up to 220 ksi, making it ideal for heavy-duty structural components and fasteners.
  • Machinability: Good machinability with conventional methods, though its hardness may require specialized tooling for precision work.
  • Weldability: Compatible with GTAW (TIG) and GMAW (MIG) processes; preheating and post-weld heat treatment recommended to avoid cracking.
  • Heat Treatment: Can be heat-treated through processes such as annealing and quenching to further increase strength and durability.

455 Stainless Steel from Mozaic Precision Metals

At Mozaic Precision Metals, we supply 455 stainless steel bar stock for industries that demand high strength, corrosion resistance, and reliability under pressure. With ISO-informed practices and over 60 years of combined leadership experience in precision grinding and stainless supply, we deliver material solutions engineered to perform.