304L Stainless Steel Coil
304 stainless steel coil is the most common type of austenitic stainless steel. It is produced by continuously rolling and winding 304 stainless steel sheets. Its core characteristic is excellent comprehensive performance, featuring good corrosion resistance, formability and weldability.
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Product Introduction

304L Stainless Steel Coil is a low-carbon variation of the classic 304 grade, specifically designed to minimize carbide precipitation during welding and high-temperature processing. With a maximum carbon content of 0.03%, this grade prevents the formation of chromium carbides at grain boundaries, thereby eliminating "sensitization" and maintaining optimal corrosion resistance in the heat-affected zones of welded structures. This makes it the preferred choice for applications requiring extensive welding, post-weld annealing, or exposure to corrosive environments where intergranular corrosion is a concern.

Supplied in continuous coil form, 304L offers the same excellent balance of corrosion resistance, formability, and toughness as standard 304, but with enhanced weldability and intergranular corrosion resistance. Its lower carbon content ensures stability and durability in welded assemblies, making it ideal for heavy-gauge components, chemical containers, and architectural structures where welding integrity and long-term corrosion resistance are paramount.

Product parameters


Item / ParameterSpecification for 304L Coil (UNS S30403)Notes / Significance
Key FeatureThe Low-Carbon Welding Grade. Maximum 0.03% carbon content prevents carbide precipitation and sensitization in welded structures.Essential for applications requiring extensive welding without post-weld heat treatment.
Common DesignationsUNS S30403, AISI 304L, EN 1.4307, X2CrNi18-9, JIS SUS304LEN 1.4307 is the key European low-carbon designation.
Chemical Composition (Typical wt.%)C: ≤ 0.030
Cr: 18.0 - 20.0
Ni: 8.0 - 12.0
Mn: ≤ 2.00
Si: ≤ 1.00
Ultralow carbon (<0.03%) is the defining characteristic vs. standard 304.
Mechanical Properties (Annealed)Tensile Strength (Rm): ≥ 485 - 620 MPa
Yield Strength (Rp0.2): ≥ 170 - 310 MPa
Elongation (A): ≥ 40%
Hardness (HB): ≤ 201
Slightly lower yield strength than standard 304, but superior ductility.
Physical PropertiesDensity: 7.93 g/cm³
Melting Range: 1399 - 1454 °C
Identical to standard 304 stainless steel.
Key Standards (Coil)ASTM A240 (Material Specification)
ASTM A480/A480M (General Requirements)
EN 10088-2
ASTM A480 governs dimensional tolerances and surface quality for coils.
Common Applications (from Coil)• Welded Fabrications: Chemical tanks, pressure vessels, piping systems.
• Heat Exchangers: Components exposed to high temperatures and corrosion.
• Architectural: Welded structural elements, facade systems.
• Food Processing: Welded equipment and containers.
• Pharmaceutical: Hygienic welded piping and vessels.
Preferred for any application where welding is extensive and corrosion resistance must be maintained.

Surface selection

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Packaging and transportation

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FACTORY SHOW

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FAQ

Q:What about your price? 
A:Our price is very competitive because we are a factory. Feel free to contact us if you are interested in our products. 

Q:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.

Q:What product information do I need to provide?
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase. 

Q:Does the product have quality inspection before loading? 
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we
accept the third party inspection absolutely. 

Q:How about the delivery time? 
A:Within 3-15 days after we confirm you requirement. 

Q:What is your terms of payment ?
A:T/T, L/C at sight, Cash, Western Union are all accepted if you have other payment,please contact me. 

Q: Do you provide samples? 
A:Yes,we could offer the sample for you to test but please pay freight fee.

Q:How do we trust your company? 
A:We are a specialized company focusing on global steel trading and supply chain services. Our mission is to provide high-quality, multi-specification, and one-stop steel products and solutions to customers worldwide.

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