ASTM A276 304 Stainless Steel Round Bar UNS S30400
Short Description:
ASTM A276 304 Stainless Steel Round Bar UNS S30400 offers excellent corrosion resistance, good weldability and machinability for general industrial applications. SAKY STEEL supplies customized diameters, lengths, surface finishes and inspection documents according to customer requirements.
304 Stainless Steel Round Bar Overview
ASTM A276 304 Stainless Steel Round Bar UNS S30400 is an austenitic stainless steel bar known for its excellent corrosion resistance, good weldability, machinability and balanced mechanical properties. It is widely used for shafts, fasteners, machining components, valves, pump parts and general industrial applications.
SAKY STEEL supplies 304 stainless steel round bars in bright drawn, polished, peeled and ground conditions. Customized diameters, lengths, surface finishes, machining services and inspection documentation are available according to customer requirements.
304 Stainless Steel Round Bar Quick Information
Grade: 304 / UNS S30400
Standard: ASTM A276 / ASTM A484
Surface: Bright / Cold Drawn / Ground / Polished
Diameter: 4mm – 500mm
Customization: Diameter, length, tolerance and machining available
304 Stainless Steel Round Bar Specifications
| Item | Specification |
|---|---|
| Grade | 304 / UNS S30400 / 304L Available |
| Standard | ASTM A276 / ASTM A484 |
| Product Type | Stainless Steel Round Bar |
| Diameter Range | 4mm – 500mm |
| Length | 1-6 meters or Customized |
| Supply Condition | Annealed / Quenched & Tempered / Ultrasonic Tested When Specified |
| Surface Finish | Cold Drawn / Centreless Ground / Peeled / Polished |
| Tolerance | According to ASTM A484 or Customer Requirements |
| Certificate | MTC / EN 10204 3.1 Available |
Stainless Steel Round Bar Grades
SAKY STEEL supplies stainless steel round bars in multiple grades to meet different corrosion resistance, machining and strength requirements.
| Grade | Main Feature | Typical Selection |
|---|---|---|
| 303 | Improved machinability | CNC machining components |
| 304 | Balanced corrosion resistance and fabrication performance | General industrial applications |
| 316L | Improved chloride corrosion resistance | Marine and chemical environments |
304 Stainless Steel Round Bar Size Range and Conditions
SAKY STEEL supplies 304 stainless steel round bars in various sizes, conditions and surface finishes to meet machining, fabrication and industrial requirements.
| Item | Specification |
|---|---|
| Round Bar Diameter | 4mm to 500mm |
| Bright Bar Diameter | 4mm to 300mm |
| Length | 1-6 meters or Customized |
| Surface Finish | Cold Drawn / Centreless Ground / Peeled / Polished / Rough Turned |
| Supply Condition | Solution Annealed, Soft Annealed, Quenched & Tempered, Ultrasonic Tested When Specified |
| Quality Requirement | Free From Surface Defects, Cracks and Contamination According to Requirement |
304 Stainless Steel Round Bar Equivalent Grades
304 stainless steel is widely recognized under different international standards. The equivalent grades help customers select suitable materials according to regional specifications.
| Standard | W.Nr. | UNS | JIS | EN |
|---|---|---|---|---|
| 304 Stainless Steel | 1.4301 | S30400 | SUS304 | X5CrNi18-10 |
| 304L Stainless Steel | 1.4306 / 1.4307 | S30403 | SUS304L | X2CrNi18-9 |
304 Stainless Steel Round Bar Chemical Composition
304 stainless steel is an austenitic chromium-nickel alloy. Its balanced chemical composition provides good corrosion resistance, weldability and mechanical performance for general industrial applications.
| Element | 304 | 304L |
|---|---|---|
| Carbon (C) | ≤0.08% | ≤0.035% |
| Chromium (Cr) | 18-20% | 18-20% |
| Nickel (Ni) | 8-11% | 8-13% |
| Manganese (Mn) | ≤2% | ≤2% |
| Silicon (Si) | ≤0.75% | ≤1.0% |
| Iron (Fe) | Balance | Balance |
304 Stainless Steel Round Bar Mechanical Properties
304 stainless steel round bar provides a balanced combination of strength, corrosion resistance and fabrication performance. Mechanical properties may vary depending on product condition, diameter and applicable specifications.
| Property | Typical Value |
|---|---|
| Density | Approx. 8.0 g/cm³ |
| Melting Point | Approx. 1400°C |
| Tensile Strength | Approx. 515 MPa |
| Yield Strength | Approx. 205 MPa |
| Elongation | Approx. 35% |
Actual mechanical properties shall be confirmed according to product condition and material test certificate.
Available Stock of 304 Stainless Steel Round Bar
SAKY STEEL provides 304 stainless steel round bars in different diameters, surfaces and lengths. Stock availability depends on grade, size and production condition.
| Grade | Type | Surface | Diameter | Length |
|---|---|---|---|---|
| 304 | Round Bar | Bright | 6-40mm | 6000mm |
| 304L | Round Bar | Bright | 6-40mm | 6000mm |
| 304 | Round Bar | Black | 21-500mm | 6000mm |
Related Grades Comparison
304 stainless steel round bar can be compared with other stainless steel grades according to machining requirements, corrosion resistance and application environment.
| Grade | Main Feature | Relative Cost | Typical Application |
|---|---|---|---|
| 303 | Improved machinability compared with 304 | Similar | CNC machining components |
| 304 | Balanced corrosion resistance and fabrication performance | Medium | General industrial components |
| 316L | Improved chloride corrosion resistance | Higher | Marine and chemical environments |
Test Report
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SAKY STEEL Quality Assurance
SAKY STEEL applies quality control procedures to ensure 304 stainless steel round bars meet customer requirements for chemical composition, dimensional accuracy, mechanical performance and surface quality.
| Inspection Item | Purpose |
|---|---|
| Visual and Dimensional Inspection | Verify diameter, length, tolerance and surface condition. |
| Chemical Analysis | Confirm stainless steel grade composition. |
| Mechanical Testing | Verify tensile strength, yield strength and elongation. |
| Hardness Testing | Check material condition and processing quality. |
| Ultrasonic Testing | Available when specified for internal quality inspection. |
| MTC / EN 10204 3.1 | Provide material traceability documentation. |
Packaging
Proper packaging protects stainless steel round bars during international transportation. SAKY STEEL uses suitable export packaging methods according to product size, surface finish and shipment requirements.
- Individual identification labels for material traceability.
- Bundle packaging with protective materials.
- Wooden cases or suitable export packages when required.
- Customized packaging according to customer requirements.
Applications of 304 Stainless Steel Round Bar
304 stainless steel round bar is widely used because of its combination of corrosion resistance, machinability, weldability and durability. It is suitable for manufacturing components requiring reliable performance in general industrial environments.
- Machined components and precision parts.
- Fasteners, shafts and mechanical components.
- Valve, pump and equipment parts.
- Food processing equipment and hygienic applications.
- Automotive components.
- Construction and industrial fabrication.
FAQ
What standard applies to 304 stainless steel round bar?
304 stainless steel round bars are commonly supplied according to ASTM A276 and ASTM A484 requirements. The applicable standard depends on product condition and customer requirements.
What is the difference between 304 and 316L stainless steel round bar?
304 provides balanced corrosion resistance and fabrication performance for general applications. 316L contains molybdenum, providing improved resistance in chloride and more corrosive environments.
Can bright polished 304 round bars be supplied?
Yes. SAKY STEEL supplies 304 round bars with bright, polished, centreless ground and other surface finishes according to requirements.
Can customized sizes be provided?
Yes. Diameter, length, tolerance, surface finish and machining requirements can be customized according to customer drawings or specifications.
Can MTC and inspection reports be provided?
Yes. Material certificates, inspection reports and quality documents can be provided according to customer requirements.
What information is needed for quotation?
Please provide grade, diameter, length, quantity, surface finish, tolerance requirements and any machining requirements.
