SS 304 and 304L Bright Round Bars are chromium-nickel stainless steel bars used for precision machining and component manufacturing. SS 304 offers good corrosion resistance and weldability, while the lower carbon content of SS 304L helps reduce sensitisation during welding.
Metalloy Steel supplies SS 304 / 304L Bright Round Bars in India in various sizes, lengths and finishes. Available specifications include ASTM A276 and ASTM A479, subject to application and material requirements. Share your required diameter, length, finish and quantity to request a quotation.
Complete mechanical, dimensional, and standard parameters for ASTM A276 / ASTM A479 UNS S30400 / S30403 bright bars and rods.
| Specification Parameter | Details |
|---|---|
| Product Name | SS 304 / 304L Bright Round Bars |
| UNS Designations | S30400 / S30403 |
| Standards | ASTM A276, ASME SA276, ASTM A479, ASME SA479 |
| Dimensions / Standards Reference | DIN, EN, ASTM, JIS, ASME, BS, AISI |
| EN Designations | X5CrNi18-10 (SS 304); X2CrNi18-9 / X2CrNi19-11 (SS 304L) |
| JIS Designations | SUS 304 / SUS 304L |
| Size | 6 mm to 100 mm |
| Diameter | 4 mm to 100 mm |
| Length | 1 to 6 metres; custom cut lengths |
| Finish | Black, bright polished, rough turned, No. 4, matt and BA finish, subject to availability |
| Product Form | Bright Round Bars / Rods |
Comparative elemental composition and physical-mechanical metrics of SS 304 and low-carbon SS 304L.
| Standard / System | SS 304 | SS 304L |
|---|---|---|
| ASTM Grade | 304 | 304L |
| UNS | S30400 | S30403 |
| Werkstoff Number | 1.4301 | 1.4306 / 1.4307 |
| EN Designation | X5CrNi18-10 | X2CrNi18-9 / X2CrNi19-11 |
| JIS | SUS 304 | SUS 304L |
| British Standard Reference | 304S31 | 304S11 |
| GOST Reference | 08Х18Н10 | 03Х18Н11 |
| AFNOR Reference | Z7CN18-09 | Z3CN18-10 |
| Element | SS 304 (%) | SS 304L (%) |
|---|---|---|
| Carbon (C) | 0.08 max | 0.035 max |
| Manganese (Mn) | 2.00 max | 2.00 max |
| Silicon (Si) | 0.75 max | 1.00 max |
| Phosphorus (P) | 0.045 max | 0.045 max |
| Sulphur (S) | 0.030 max | 0.030 max |
| Chromium (Cr) | 18.00–20.00 | 18.00–20.00 |
| Nickel (Ni) | 8.00–11.00 | 8.00–13.00 |
| Property | SS 304 | SS 304L |
|---|---|---|
| Density | 7.93 g/cm³ | 7.93 g/cm³ |
| Melting Point | Approximately 1400°C | Approximately 1400°C |
| Tensile Strength | 515 MPa (75,000 psi) | 515 MPa (75,000 psi) |
| Yield Strength (0.2% Offset) | 205 MPa (30,000 psi) | 205 MPa (30,000 psi) |
| Elongation | 35% | 35% |
For other available stainless steel and alloy grades, explore our Bright Round Bars range.
Estimate real-time linear mass and total order weight for SS 304 / 304L Bright Round Bar and other precision bright stainless steel round bars with our live 3D visualizer engine.
SS 304 / 304L Bright Round Bars can be supplied in different conditions and finishes depending on machining, component manufacturing and surface finish requirements.
Have a smoother, brighter surface for components requiring improved surface appearance and reduced finishing work.
Have a machined surface produced by turning, suitable where further machining is planned.
Offer a non-glossy surface finish for applications where a reflective appearance is not required.
Bright-annealed material has a smooth, reflective surface, subject to the supplied product specification.
Supplied in specified lengths to reduce additional cutting before machining or fabrication.
For applications where the lower carbon content of SS 304L is important, explore our SS 316 / 316L Bright Round Bars for an alternative stainless steel grade family with molybdenum-enhanced corrosion resistance.
Superior dimensional accuracy, smooth aesthetic surface finishes, and reduced risk of weld sensitisation.
Bright and polished finishes can reduce the amount of surface preparation required before use in suitable applications.
Round-bar form supports the manufacture of shafts, pins, bushes, fasteners and precision-machined components.
SS 304L's lower carbon content helps reduce sensitisation risk during welding compared with standard SS 304 under suitable conditions.
Available diameter and cut-length options can help match raw material to machining and component requirements.
Typical components and engineering sectors utilizing Grade 304 and 304L precision bright round bars.
| Industry | Typical Components / Uses |
|---|---|
| General Engineering | Shafts, pins, bushes and precision-machined parts |
| Food Processing | Equipment components requiring suitable surface finishing and cleaning |
| Pharmaceutical Equipment | Selected machined components and equipment parts |
| Chemical Processing | Fittings and components for compatible process environments |
| Automotive & Machinery | Spacers, fasteners, shafts and machined assemblies |
| Fabrication & Construction | Machined fittings, supports and fabricated components |
Metalloy Steel can discuss inspection and documentation requirements for SS 304 / 304L Bright Round Bars according to the purchase specification and order scope.
Can be requested, subject to availability, to document heat-specific chemical composition and mechanical test results.
Can help verify the material grade and distinguish SS 304 from SS 304L and other stainless steel grades.
Can be specified to verify elemental composition against the applicable grade requirements.
Tensile strength, yield strength, elongation and hardness testing can be requested according to applicable requirements.
Checks diameter, length, tolerances and supplied finish against agreed specifications.
Independent inspection may be arranged with an agreed agency, subject to availability and project requirements.
Clear technical answers to frequent queries regarding SS 304 / 304L bright round bar supply, finishes, and specifications.
SS 304L has a lower carbon limit than SS 304, helping reduce sensitisation risk during welding.
ASTM A276 / ASME SA276 and ASTM A479 / ASME SA479 may apply, depending on the product and intended use.
The supplied reference lists sizes from 6-100 mm, diameters from 4-100 mm and lengths from 1-6 metres, with custom cut lengths.
Listed finishes include bright polished, rough turned, No. 4, matt, BA and black, subject to availability and product suitability.
Provide the grade, diameter, length, finish, quantity and applicable standard to check availability and pricing.
Contact Metalloy Steel to enquire about SS 304 / 304L Bright Round Bars in India. Share your required grade, diameter, length, finish and quantity so the team can review availability and provide a quotation based on your specifications.
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