303 Stainless Steel T Section

Characteristics of 303 Stainless Steel T Section Products

The 303 Stainless Steel T Section, classified as EN 1.4305, stands out as the most machinable option among austenitic stainless steel products. This enhanced machinability is achieved through sulphur addition, though this modification slightly reduces corrosion resistance and toughness compared to 304 grade Stainless Steel T Section variants.

Key Features:

• Superior machinability
• Good corrosion resistance in mild environments
• Excellent for precision-engineered components
• Enhanced galling resistance
• Specific temperature service ranges

Performance and Environmental Considerations

The 303 Stainless Steel T Section offers:

• Reliable oxidation resistance in:
  • Intermittent service up to 760°C (1400°F)
  • Continuous service up to 870°C (1,598°F)

Important Usage Guidelines:

• Not recommended for use between 425-860°C (797-1580°F) due to carbide precipitation
• Avoid exposure to marine environments
• Exercise caution in highly corrosive settings
• Consider potential sensitization issues

While the Stainless Steel T Section in grade 303 provides excellent machining characteristics, users should carefully evaluate environmental conditions before selection. The sulphide inclusions that enhance machinability can act as pit initiation sites, resulting in reduced corrosion resistance compared to other grades. For applications requiring both good machinability and moderate corrosion resistance in non-marine environments, the 303 Stainless Steel T Section provides an optimal solution.