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446 Ferritic Stainless Steel Bar

446 Ferritic Stainless Steel Bar: 446 (UNS S44600) is a high-chromium ferritic stainless alloy selected for oxidation resistance under specified elevated-temperature conditions.

Download Mozaic 446 Ferritic Stainless Steel Bar reference PDF

446 Ferritic Stainless Steel Bar — Technical Specification Overview

Grade and purchasing reference; check the actual mill certificate
Property Material or specification details
Material designation 446 Ferritic Stainless Steel Bar
Chemical / alloy identity UNS S44600; high-chromium ferritic stainless
Specification to confirm ASTM A276 / ASTM A479 for applicable bars
Supplied condition Annealed ferritic grade; service temperature and atmosphere must be documented
Representative parts Heat-related industrial fittings and oxidation-resistant machine components
Processing requirements Finished bar OD, surface roughness, straightness, length and heat/lot traceability determined per purchase order

Illustrative reference only. The exact edition of the purchase standard, product form, supply condition and mill test report govern material acceptance.

Selection, Properties and Applications

Oxidation resistance and high-temperature load-bearing strength are different requirements.

Common applications include heat-related industrial fittings and oxidation-resistant machine components. The correct steel grade depends on operating environment, hardness or corrosion criteria, machining requirements, and traceability. An engineer should approve any alternative material designation and required temper before production.

Centerless Ground Bar and Processing

Mozaic Precision Metals can review 446 Ferritic Stainless Steel Bar sourcing and precision centerless grinding, polishing, straightening, saw cutting and packaging. Service capability depends on bar diameter, length, condition, starting material and tolerances. Requirements for straightness, roundness, finished diameter and surface finish should be separately specified, not assumed to share one universal tolerance.

Related Material Grades

Request a Material Quote

Please identify the exact grade, product standard/revision, annealed or heat-treated condition, starting and final OD, bar length, quantity, surface and inspection criteria, and certificates needed. Request a quote from Mozaic, email sales@mozaicprecision.com, or call 847-637-8379.

Machining and Welding of 446 Stainless Steel Bar

446 stainless steel round bar is known for its high chromium content and excellent resistance to oxidation and corrosion at elevated temperatures. However, its unique composition also makes machining and welding more challenging compared to other stainless grades.

Machining 446 Stainless Steel

Due to low thermal conductivity and a tendency to work harden, 446 bar requires careful handling during machining. To optimize performance:

  • Use cutting tools specifically designed for high-temperature alloys.
  • Maintain proper cutting speeds and feeds to reduce excessive heat buildup.
  • Apply coolant consistently to dissipate heat and minimize work hardening.
  • Monitor tool wear closely, as chip formation and tool life can be impacted.

Welding 446 Stainless Steel

Welding of 446 bar can be performed using methods such as GTAW (TIG), GMAW (MIG), and SMAW (stick welding). Key considerations include:

  • Use filler metals designed for high-temperature applications, such as AWS A5.9 ER446.
  • Preheating and post-weld heat treatment are recommended to minimize cracking and enhance weld properties.
  • Avoid overheating during welding to prevent chromium evaporation, which reduces corrosion resistance.

 

Applications of 446 Stainless Steel Bar

446 stainless steel bar offers exceptional durability, high-temperature resistance, and strong corrosion protection, making it valuable across many industries. Its affordability compared to other heat-resistant alloys further increases its demand.

Common Applications

  • Heat Exchangers: Excellent oxidation resistance makes it ideal for industrial heat transfer systems.
  • Furnace Components: Used for furnace grids, retorts, and muffles where high-temperature strength is essential.
  • Welding Fixtures: Provides durability and corrosion resistance in fabrication environments.
  • Oil & Gas: Valves, tubing, and piping designed to withstand harsh, corrosive environments.
  • Chemical Processing: Pumps, tanks, and process equipment resistant to aggressive chemicals.
  • Kitchenware: Cutlery, cookware, and utensils benefiting from wear resistance and easy maintenance.

446 Stainless Steel from Mozaic Precision Metals

At Mozaic Precision Metals, we supply 446 stainless steel round bar engineered for high-performance applications in heat, chemical, and corrosive environments. With decades of expertise in precision grinding and stainless supply, we ensure material consistency and reliability for every order.