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Product Overview

The 316L stainless steel hot rolled flat bar is an ultra-low carbon variant of 316, with a maximum carbon content of 0.03%. This reduced carbon level eliminates the risk of intergranular corrosion (sensitization) after welding, even without post-weld annealing, making it the preferred choice for heavy fabrication.

Retaining the full molybdenum-enhanced corrosion resistance of 316, the 316L grade is ideal for welded structures in marine, chemical, and pharmaceutical environments where long-term structural integrity is critical.

Technical Specifications

Grade316L
Thickness3mm - 30mm
Width20mm - 200mm
Length3m - 6m (custom available)
Surface FinishHot Rolled (No.1)
StandardASTM A276, ASTM A484, GB/T 1220
ProcessHot Rolled & Annealed
Chemical CompositionC ≤0.03%, Cr 16-18%, Ni 10-14%, Mo 2-3%, Mn ≤2.0%

Key Features

  • Ultra-low carbon — no sensitization after welding
  • No post-weld annealing required
  • Full 316-grade corrosion resistance
  • Excellent for heavy fabrication
  • Ideal for thick-section welded structures

Typical Uses

  • Welded pressure vessels and tanks
  • Pharmaceutical processing equipment
  • Heavy marine structural components
  • Chemical storage and transport
  • Offshore platform welded assemblies

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