304L Stainless Steel Bar
Similar to 304 stainless steel, 304L stainless steel has one key difference in its chemical composition. The maximum carbon content of 304 stainless steel is 0.08%, whereas grade 304L stainless steel has a maximum carbon of only 0.03%. This is why the “L” in 304L can be interpreted as extra-low carbon. It is usually used to produce equipment and parts that demand better corrosion resistance and formability.
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Product Description

304L Stainless Steel Bar Description

304L stainless steel bar is used where welding is involved, as a variant of 304 stainless steel bar. The lower carbon content greatly lowers the precipitation of carbides in the heat-affected zone close to the weld, and such precipitation is likely to lead to intergranular corrosion of stainless steel in certain settings. Basically, their is no need to anneal weld joints prior to using the completed metal form using 304L, saving time and effort. As a matter of fact, both 304 and 304L stainless steel bars can be used for many of the same applications. The differences are often minor enough that one isn’t considered massively more useful over the other. 304L stainless steel bars are commonly used as manufacturing parts in fields such as food processing equipment, building materials, automobile parts.


Product Parameters

Product Name                           

304L Stainless Steel Bar

Type

Steel Bar

Outer Diameter

Round Bar

4mm-500mm

Hexagon Bar

18mm-57mm (11/16″ to 2-3/4″)

Square Bar

18mm-47mm (11/16″ to 1-3/4″)

Flat Steel

1/2 "to 10", Thickness: 2mm-150mm, Can provide customized

Length

1-6 meters, Length can be customized

Standard

ASTM, AISI, JIS, GB, DIN, EN, etc.

Surface

Black, Bright Polished, Rough Turning, Mattness Surface Treatment, No. 4. BA, etc.

Scope of Application

Stainless steel bars are used in a variety of industries such as shipbuilding,

Defense, Automotive, Textiles, Paper and pulp, Manufacturing, Cement,

Heavy earthmoving equipment and construction, etc.

 

Chemical Composition

C

Si

Mn

Cr

Ni

S

P

≤ 0.03

≤1.0

≤ 2.0

18.0~20.0

8.0~12.0

≤ 0.03

≤ 0.035

 

Mechanical Properties

Tensile Strength Kb (MPa)

Yield Strength σ0.2 (MPa)

Elongation D5 (%)

Hardness

≥ 520

≥ 205

≥ 40

≤ 187HB ;≤ 90HRB;≤ 200HV

 

Physical Performance

Density(g/cm³)

Modulus of Elasticity(Gpa)

Coefficient of Thermal Expansion(10-6/°C)

Coefficient of Thermal Conductivity(W/m*K)

Resistivity(ΜΩ. cm)

8.03

193

16.9

16.2

72

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Product Application

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Packaging and shipping

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Factory Display

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  • 工厂车间 (4)
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FAQ

Q1: What types of steel products does your company primarily manufacture and supply?
A: We are a direct manufacturer specializing in carbon steel, hot-dip galvanized steel, PPGI (pre-painted galvanized iron), and stainless steel (grades 201, 304, and 316) in the form of sheets, coils, pipes, and various structural profiles, along with complementary steel structural components. Our products serve a wide range of industries, including infrastructure, photovoltaics, machinery manufacturing, chemicals, and new energy.

 

Q2: Do you support customization regarding material grades, thicknesses, and dimensions?
A: Customization is available across our entire product range. For carbon steel, galvanized steel, and stainless steel, we can adjust thickness, width, and cut-to-length dimensions according to GB, ASTM, or EN standards. Various profiles can be cut and bent based on customer drawings, and special steel grades can be produced through customized scheduling.

 

Q3: What is the difference between galvanized steel and color-coated (PPGI) steel, and how should I choose for my project?
A: Hot-dip galvanized steel features a pure zinc anti-rust layer; it is cost-effective and impact-resistant, making it ideal for mounting brackets, guardrails, and load-bearing factory structures (and it can be painted over). PPGI color-coated steel uses a galvanized base, offering both rust protection and aesthetic appeal with a wide range of colors; it is commonly used for factory roofing, wall cladding, and energy storage equipment casings. We recommend thicker galvanized coatings for projects in rainy coastal areas, color-coated sheets for outdoor projects requiring visual appeal, and weather-resistant fluorocarbon (PVDF) coatings for high-temperature desert environments.

 

Q4: Does the factory keep stock on hand, and what is the minimum order quantity (MOQ)?
A: We operate our own standardized, zoned warehouse with a capacity of over 10,000 tons, maintaining ample stock of carbon steel, galvanized steel, and stainless steel. The MOQ for standard specifications is 1 ton, though we also accept sample orders as small as a few dozen kilograms. There is no upper limit for large-scale projects, and we support mixed-load shipments combining different steel products in a single container.

 

Q5: What are the lead times for stock items versus customized products?
A: Standard stock items take 3–7 days for processing, packaging, and container loading. Simple cutting and bending orders take 7–10 days. Orders requiring mold creation or special steel customization take 15–30 days; exact delivery dates are confirmed based on the customer's specific order specifications.

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