AISI 304L UNS S30403 Stainless Steel Strip

What is AISI 304L / UNS S30403 Stainless Steel?

AISI 304L, also known as UNS S30403, is a low-carbon version of 304 stainless steel. The "L" stands for "low carbon," which improves its weldability and enhances its resistance to intergranular corrosion after welding or heat treatment.

ASTM 304L stainless steel strip is the most popular choice for applications requiring durable, non-magnetic, and corrosion-resistant stainless steel strip, such as in chemical, kitchen equipment, heat exchangers, and electronics industries.

 

If you are looking for a reliable supplier of AISI 304L / UNS S30403 stainless steel strip, Gnee offers a full range of high-quality 304L stainless steel strips with excellent corrosion resistance, formability, and surface finish, suitable for industrial, construction, and food processing applications.

All our stainless steel strips are manufactured to ASTM, AISI, JIS, DIN, and EN standards, ensuring precise thickness, smooth edges, and stable mechanical properties.

 

We provide:1.4306 stainless steel strip, UNS S30403 stainless steel strip, ASTM A240 304L stainless steel strip, 304L stainless steel hot rolled strip, 304L stainless steel cold rolled strip, 304L stainless steel galvanized strip, 304L stainless steel pickled strip, 304L stainless steel slit strip, 304L stainless steel mill strip, 304L stainless steel brushed/polished/mirror/matte strip, 304L stainless steel sheared strip, 304L stainless steel plate, 304L stainless steel sheet, 304L stainless steel coil, 304L stainless steel foil, etc.

 

Standard	ASTM A240 / A240M, EN 10088-2
Grade	1.4307, SUS304L, UNS S30403
Thickness	0.1 mm – 3.0 mm (0.004'' – 0.12''), Customized
Width	5 mm – 800 mm (0.2'' – 31.5''), Customized
Inner Diameter	200 mm – 610 mm (7.9'' – 24''), Customized
Edge	Deburred Edge, Mill Edge, Round Edge, Slit Edge
Technique	Annealing, Coating, Cold Rolling, Hot Rolling
Surface Finish	2B, 2D, 8K, BA, Brush, Checkered, Customized, Embossed, Etching, Hair Line, Mirror, No.1, No.4, No.8, Sand Blast

 

Chemical Composition

GRADE	Chemical Composition
	C	Si	Mn	P	S	Ni	Cr
	%	%	%	%	%	%	%
304L	≤0.03	≤1.0	≤2.00	≤0.045	≤0.030	9.00/12.0	18.00/20.00

 

Mechanical Properties

Property	Metric	Imperial
Tensile Strength (0% cold-worked)	564 MPa	81.8 ksi
Yield Strength (0% cold-worked)	210 MPa	30.5 ksi
Brinell Hardness (HB)	–	–
Rockwell Hardness (HRB)	82	82
Vickers Hardness (HV)	159	159
Elongation at Break (In 50mm/2")	58 %	58 %
Young's Modulus	193 – 200 GPa	28.0 – 29.0 Msi

 

Gnee, a professional supplier of 304L stainless steel strip, boasts over 18 years of experience exporting stainless steel products. We supply ISO and SGS certified 304L stainless steel strip and coils, offering professional custom slitting, polishing, and cutting services. With ample stock and fast delivery, we are trusted by customers in over 60 countries.

Stock Status: In Stock (Immediate Delivery Available)
Minimum Order Quantity: 1 Ton (Negotiable)
Length: Coil or Cut to Order
Delivery Time: 7-15 Working Days
Trade Terms: EXW, FOB, CFR, CIF
Certifications: ISO 9001, SGS, BV, MTC (EN 10204 3.1)
All steel strips are packaged in wooden crates or pallets with moisture-proof measures to ensure safe international transport.

FAQ

Q1: What is the difference between AISI 304 and 304L?

304L has a lower carbon content than 304, which improves its weldability and resistance to sensitization. Both have similar corrosion resistance and mechanical strength.

Q2: What surface treatments are available for 304L steel strip?

Common surface treatments include 2B (matte), BA (bright annealed), No.4 (brushed), and mirror finish (8K), depending on your application.

Q3: What are the standard tolerances?

Thickness tolerances typically conform to ASTM A480 or EN ISO 9445-2 standards to ensure dimensional accuracy.