Stainless Steel 304L Round Bars
Stainless Steel 304L Round Bars Manufacturer & Supplier in India
Stainless Steel 304L Round Bars are widely used stainless steel products known for their excellent corrosion resistance, durability, and low carbon content. The lower carbon level in a 304L stainless steel round bar prevents carbide precipitation during welding, which helps maintain corrosion resistance in welded structures.
Because of this advantage, stainless steel 304L round bars are widely used in industries such as chemical processing, food manufacturing, marine engineering, construction, oil & gas processing, and pharmaceutical equipment manufacturing.
Stellar Alloys Steel Pipes and Tubes is a trusted manufacturer and supplier of high-quality SS 304L round bars produced according to international standards such as ASTM A276 304L and SA479 TP304L. Our bars are manufactured using premium raw materials and modern production processes to ensure high strength, dimensional accuracy, and long service life.
We supply 304L stainless steel round bar products in diameters ranging from 3 mm to 500 mm, with various finishes such as hot rolled, bright annealed, and polished. These bars are suitable for machining, fabrication, welded structures, and structural engineering applications.
Stellar Alloys is an ISO 9001:2015 certified manufacturer, and all materials can be supplied with EN 10204 3.1 Mill Test Certificates on request. We export stainless steel round bars to the UAE, Saudi Arabia, USA, UK, Singapore, South Africa, and Australia, supporting industrial projects worldwide.
Table of Contents
- Specification of Stainless Steel 304L Round Bars
- Types of Stainless Steel 304L Round Bars
- Chemical Composition of Stainless Steel 304L Round Bars
- Mechanical Properties of Stainless Steel 304L Round Bars
- Stainless Steel 304L Round Bar Sizes
- SS 304L Round Bar Price Per Kg in India
- Applications & Uses of Stainless Steel 304L Round Bars
- Equivalent Grades of SS 304L Round Bars
- SS 304 vs SS 304L Round Bars — Key Differences
- Related Products
- FAQs About Stainless Steel 304L Round Bars
Specification of Stainless Steel 304L Round Bars
Specification | Details |
Material Grade | Stainless Steel 304L |
Standard | ASTM A276 / SA479 TP304L |
UNS Designation | S30403 |
Form | Round Bar |
Diameter | 3 mm – 500 mm |
Length | 3 m – 6 m or Custom |
Finish | Hot Rolled (Black), Bright Annealed, Polished, Turned |
Technique | Hot Rolled / Cold Drawn |
Testing | Chemical Analysis, Mechanical Testing, PMI |
Certification | EN 10204 3.1 / 3.2 MTC |
Types of Stainless Steel 304L Round Bars
We manufacture stainless steel round bars in multiple grades and finishes to meet diverse industrial requirements:
SS 304 Square Bar
SS 304 Hex Bar
SS 304 Flat Bar
SS 304 Forged Rod
SS 304 Bright Bar
SS 304 Flat Bar
304L Stainless Steel Round Bar
Standard bar form produced through hot rolling or cold drawing processes and supplied in annealed condition according to ASTM standards.
SS 304L Bright Bars
Cold drawn and centerless-ground bars with tight dimensional tolerance and smooth surface finish, commonly used for machining applications.
SS 304L Black Bars
Hot rolled bars with mill scale surface finish, suitable for fabrication and structural applications where surface finish is not critical.
SS 304L Forged Round Bars
Manufactured through forging to improve grain structure and mechanical strength, widely used in heavy engineering components.
SS 304L Hot Rolled Round Bars
Produced by hot rolling above recrystallization temperature, suitable for general industrial and structural engineering applications.
SS 304L Cold Drawn Round Bars
Cold worked bars offering better dimensional accuracy and surface finish compared to hot rolled bars.
Chemical Composition of Stainless Steel 304L Round Bars
Element | Composition (%) |
Chromium (Cr) | 18.0 – 20.0 |
Nickel (Ni) | 8.0 – 12.0 |
Carbon (C) | 0.03 max |
Manganese (Mn) | 2.00 max |
Silicon (Si) | 1.00 max |
Phosphorus (P) | 0.045 max |
Sulfur (S) | 0.030 max |
Nitrogen (N) | 0.10 max |
Mechanical Properties of Stainless Steel 304L Round Bars
Property | Value |
Tensile Strength | 485 MPa (min) |
Yield Strength | 170 MPa (min) |
Elongation | 40% |
Hardness | 92 HRB max |
Modulus of Elasticity | 193 GPa |
Values shown are minimum requirements per ASTM A276 / SA479 TP304L in annealed condition.
Stainless Steel 304L Round Bar Sizes
Stainless steel 304L round bars are available in a wide range of sizes to suit different engineering requirements.
Diameter | Length |
3 mm – 25 mm | 3 m – 6 m |
25 mm – 100 mm | 3 m – 6 m |
100 mm – 300 mm | Custom Length |
300 mm – 500 mm | Custom Length |
Custom sizes and cut lengths can also be supplied based on project specifications.
Density of SS 304L: 7.93 g/cm³
Example weight reference:
25 mm diameter bar ≈ 3.87 kg per meter
Contact us for complete weight charts for SS 304L round bars.
SS 304L Round Bar Price Per Kg in India
Product | Approx Price |
SS 304L Round Bars | ₹220 – ₹320 per kg |
SS 304L Bright Bars | ₹250 – ₹350 per kg |
SS 304L Forged Bars | ₹280 – ₹380 per kg |
Prices vary depending on size, quantity, and market conditions.
Payment modes accepted: LC, TT, and Cheque.
Contact us for bulk pricing or export FOB quotes.
Applications & Uses of Stainless Steel 304L Round Bars
- Chemical Processing Equipment
Used in reactors, storage vessels, and heat exchanger components where welded joints must maintain corrosion resistance. - Food & Beverage Machinery
Used for shafts, rollers, and processing equipment because stainless steel 304L meets hygienic and food safety standards. - Marine & Coastal Structures
Used for pump shafts and structural components exposed to marine atmosphere and seawater splashes. - Oil & Gas Processing
Used in instrumentation parts, pump shafts, and valves in non-sour environments. - Construction & Architecture
Used for structural supports, handrails, and decorative components in corrosive or high humidity environments. - Heat Exchangers & Pressure Vessels
Suitable for welded heat exchanger components where carbide precipitation must be avoided. - Pharmaceutical Equipment
Used in mixing shafts, agitators, and vessel internals where corrosion resistance and hygiene are critical.
Equivalent Grades of SS 304L Round Bars
Grade | UNS | Werkstoff No | JIS | EN |
SS 304L | S30403 | 1.4307 | SUS304L | X2CrNi18-9 |
Our stainless steel round bars serve mission-critical applications across multiple industries due to their exceptional strength, corrosion resistance, and reliability in harsh environments:
Common applications include:
- Oil and Gas Industry – Downhole pump shafts, valve stems, instrumentation components, and wellhead equipment
- Chemical Processing Plants – Reactor vessel shafts, agitator components, pump impellers, and corrosion-resistant fasteners
- Marine and Offshore Structures – Propeller shafts, deck equipment, rigging hardware, and saltwater-resistant fittings
- Automotive and Mechanical Engineering – Engine components, transmission shafts, precision machined parts, and suspension elements
- Pump and Valve Manufacturing – Valve stems, pump shafts, piston rods, and high-pressure fittings
- Construction and Structural Frameworks – Architectural supports, railing systems, and load-bearing structural members
- Food Processing Equipment – Mixer shafts, conveyor components, sanitary fittings, and hygienic processing machinery
- Aerospace Components – Landing gear parts, high-strength fasteners, precision machined aircraft components
SS 304 vs SS 304L Round Bars — Key Differences
Carbon Content | 0.08% max | 0.030% max |
Sensitization Risk | Yes — at 425–870°C weld zones | Immune — no carbide precipitation |
Post-Weld Heat Treatment | May be required | Not required in most applications |
Typical Use Case | General corrosion-resistant fabrication | Welded structures, chemical plant, food, pharma |
ASTM Standard | ASTM A276 304 | ASTM A276 304L |
UNS Number | S30400 | S30403 |
Related Products
- Stainless Steel 304L Pipes & Tubes
- Stainless Steel 304L Sheets & Plates
- Stainless Steel 304L Pipe Fittings
- Stainless Steel Round Bars
FAQs About SS 304 Round Bars
The main difference is carbon content. SS 304L contains a maximum of 0.03% carbon, while standard 304 contains 0.08% carbon. The lower carbon level prevents carbide precipitation during welding, making 304L ideal for welded structures and chemical processing equipment.
Common standards include ASTM A276 304L and SA479 TP304L, which define the mechanical and chemical requirements for stainless steel bars.
Industries such as chemical processing, food manufacturing, marine engineering, oil & gas, and construction widely use SS 304L round bars.
Yes, manufacturers like Stellar Alloys Steel Pipes and Tubes can supply customized diameters and cut lengths based on project requirements.
Common finishes include Hot Rolled (Black), Bright Annealed, Polished, and Turned finishes.
The UNS designation for Stainless Steel 304L is S30403, which identifies the low-carbon version of grade 304.