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Stainless SteelS30403

304L Stainless Steel

304L stainless steel is a low-carbon version of 304 stainless steel, designed to reduce carbide precipitation during welding and improve resistance to intergranular corrosion. It retains the excellent corrosion resistance, toughness, and formability of standard 304 while offering enhanced performance in welded structures. Due to its low carbon content (≤0.03%), 304L is widely used in applications where welding is required or where exposure to corrosive environments is expected. It performs well in chemical processing equipment, food and beverage machinery, pharmaceutical systems, and architectural structures. It is supplied in angle bar form under standards such as ASTM A276/A479. This grade provides good strength at both room and elevated temperatures, along with excellent fabrication characteristics, making it one of the most versatile stainless steels in industrial use.

Material Profile

Overview

Family
Stainless Steel
Type
Austenitic
UNS
S30403

Features

Material Advantages

Low-Carbon Weldability

Lower carbon content helps reduce carbide precipitation during welding, supporting corrosion resistance in welded structures.

Intergranular Corrosion Resistance

Designed to improve resistance to intergranular corrosion after welding or thermal exposure compared with standard-carbon 304.

Versatile Austenitic Fabrication

Combines good formability, toughness and fabrication behavior for tanks, piping, food equipment and architectural components.

General Industrial Corrosion Resistance

Maintains the broad corrosion resistance profile of 304 for many atmospheric, food processing and mild chemical environments.

Supply Forms

Available Product Forms

Select a product form to review size ranges, specifications and sourcing details.

Technical Data

Material Technical Data

Chemistry shown per ASTM A240/A240M (HR / CR). Switch the standard above to compare other editions.

CCrNiMnSiFeNPS
≤0.0318.0-20.08.0-12.0≤2.0≤0.75Bal.0.1≤0.045≤0.030

Applications

Typical Equipment Applications

Storage Tank

Storage Tank

Architectural Decoration System

Architectural Decoration System

Kitchen Equipment

Kitchen Equipment

Vacuum Equipment

Vacuum Equipment