Low Carbon Alloy 304L Steel (often referred to as 304L stainless steel) is a widely used austenitic stainless steel variant, distinguished by its low carbon content, which enhances its weldability and corrosion resistance-especially in post-weld applications. Below is a detailed overview of its key characteristics, properties, and applications:

1. Chemical Composition

The low carbon content is its defining feature, with typical ranges (per ASTM standards) as follows:

 

Carbon (C): ≤ 0.03% (significantly lower than 304 stainless steel, which has ≤ 0.08% C). This minimizes the risk of "sensitization" during welding (formation of chromium carbides at grain boundaries, which depletes chromium near the boundaries and reduces corrosion resistance).

Chromium (Cr): 18.0–20.0% (provides primary corrosion resistance by forming a passive oxide layer on the surface).

Nickel (Ni): 8.0–12.0% (stabilizes the austenitic structure, improving ductility and toughness, especially at low temperatures).

Manganese (Mn): ≤ 2.0%.

Silicon (Si): ≤ 1.0%.

Phosphorus (P): ≤ 0.045%.

Sulfur (S): ≤ 0.03%.

2. Key Properties

a. Corrosion Resistance

Excellent resistance to general corrosion in atmospheric environments, fresh water, and many organic/inorganic chemicals (e.g., mild acids, alkalis).

Superior to 304 in welded structures: The low carbon content prevents sensitization, ensuring the weld zone retains corrosion resistance-critical for applications like chemical processing tanks or pipelines.

Resists oxidation at moderate temperatures (up to ~870°C in intermittent service; ~925°C in continuous service).

b. Mechanical Properties

Tensile Strength: 485–655 MPa (depending on heat treatment and form).

Yield Strength: ≥ 170 MPa.

Elongation: ≥ 40% (high ductility, allowing easy forming, bending, and fabrication).

Hardness: ≤ 217 HB (Brinell) or ≤ 95 HRB (Rockwell B), indicating good machinability and workability.

 

 

 

 

 

 

 

 

 

 

 

 

 

Why Choose Us?
We take pride in our ability to provide custom solutions for our customers' unique needs.
We analyze and compare the previous products and the current technical situation of our LOW CARBON ALLOY 304L STEEL, and develop new technical specifications and processes.
Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.
We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.
We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.
Our factory is committed to upholding the highest standards of safety and quality.
All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.
Our Cold-rolled Steel products are known for their durability and reliability.
Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers.

Hot Tags: low carbon alloy 304l steel, China low carbon alloy 304l steel suppliers, factory, 2 4642, GH3030, HastelloyB-2, HastelloyC, N06690, N10001