SUS304L Austenitic Stainless Steel – Low-Carbon Weld-Stable Corrosion Solution

Product Introduction

SUS304L is the low-carbon variant of SUS304, specially designed to solve the problem of intergranular corrosion (sensitization) in welded components. With a maximum carbon content of 0.03%, it effectively prevents the precipitation of chromium carbides in the heat-affected zone during welding, eliminating the need for post-weld annealing-a key advantage for large or complex welded structures. This grade retains all the corrosion resistance and formability of SUS304, while offering enhanced ductility and weld integrity. It is the preferred choice for welded components that require long-term corrosion stability, especially in industries such as chemical and food processing.

Chemical Composition (wt%)

C ≤ 0.03, Cr: 18.00-20.00, Ni: 8.00-11.00, Mn ≤ 2.00, Si ≤ 1.00, P ≤ 0.045, S ≤ 0.030

Mechanical Properties (Annealed State)

Tensile Strength ≥ 480 MPa, Yield Strength ≥ 175 MPa, Elongation ≥ 40%, Hardness ≤ 200 HB

Core Advantages

Resistant to sensitization, no post-weld heat treatment required; superior intergranular corrosion resistance compared to SUS304; maintains the general corrosion performance of SUS304; excellent weldability and ductility; non-magnetic; suitable for large-scale welded fabrications.

Typical Applications

Welded pressure vessels, chemical pipelines, pharmaceutical equipment, food processing pipelines, large storage tanks, and welded components in corrosive environments.

Equivalent Grades

AISI 304L, UNS S30403, EN 1.4307, GB 022Cr19Ni10

Stainless Steel Suppliers

If you have project requirements for stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.Email: info@gneestainless.com

 

Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.