304L Stainless Steel Round Bars

304L stainless steel bar is an ultra-low carbon version of austenitic stainless steel bar with a carbon content of ≤0.03% (ordinary 304 is ≤0.08%). It significantly improves the resistance to intergranular corrosion by reducing the risk of carbide precipitation, and is especially suitable for scenarios where heat treatment is not required after welding.
 

What is the difference between 304L stainless steel bar and 304?
Carbon content: 304L is designed with low carbon, and it is not easy to cause corrosion due to chromium depletion at the grain boundary after welding;
Heat treatment requirements: 304L can be used directly after welding, and 304 needs solid solution treatment (heating and rapid cooling) to resist intergranular corrosion.
Cost: 304L is 5%-10% more expensive than 304, because the carbon content needs to be more strictly controlled during smelting.

How is the corrosion resistance of 304L ultra-low carbon stainless steel bar?
It performs well in the atmosphere, fresh water, weak acid and alkali, and low temperature (-196℃) environment, and its corrosion resistance is more than 10 times that of carbon steel. A self-repairing Cr₂O₃ oxide film can be formed on the surface.
 

304L stainless steel bar application

Medical equipment, food processing equipment
High-precision parts (such as screws, shafts, pins)
Chemical equipment, pressure pipe supports
Decorative components, precision structural frames

Specifications 304L Cold Drawn Stainless Steel Bar

Item	Description
Grade	304L / S30403 / 1.4307 / SUS304L
Condition	Cold Drawn or Cold Worked
Diameter Range	Typically Φ3mm to Φ100mm (custom sizes available)
Surface Finish	Bright, Pickled, Ground
Standards	ASTM A276, ASTM A484, JIS G4303, EN 10088, etc.

Mechanical Properties (Cold Worked Condition)

Property	Typical Value
Tensile Strength (UTS)	≥ 600 MPa
Yield Strength (YS)	≥ 240 MPa
Elongation (%)	≥ 35
Hardness	≤ 200 HBW

Chemical Composition (Typical Values, %)

Element	C	Si	Mn	P	S	Cr	Ni
Content	≤0.03	≤1.0	≤2.0	≤0.045	≤0.03	18.0–20.0	8.0–12.0

GNEE supports cold drawing, hot rolling, grinding and other processes. It can be processed into round bars (φ6-φ300mm), square bars (10×10mm-200×200mm), hexagonal bars (opposite sides 6-150mm). The surface conditions can be selected as bright surface (BA), black leather surface (hot rolling), and ground surface (Ra≤0.8μm).

Q1: What products can you offer?
A: We can offer you general steel types like 310S, 316L,304.304L.201,904L, 316H, 316,316L 300and
400 series, and duplex stainless steel like 2205, 2304,2101,2507,etc.

Q2. Can you produce the products according to my own drawings?
Yes,we can produce the products according to your drawings that will be most satisfy you.

Q3. How does your factory do regarding quality control?
Quality is priority. We always attach great importance to quality controlling from beginning to end.