ASTM A276 316 / 316L Stainless Steel Round Bar UNS S31600 S31603
Short Description:
ASTM A276 316L Stainless Steel Round Bar UNS S31603 is an austenitic stainless steel bar containing molybdenum for improved corrosion resistance, especially in chloride and marine environments. SAKY STEEL supplies 316 and 316L round bars with customized diameters, lengths, surface finishes and inspection documentation.
316 / 316L Stainless Steel Round Bar Overview
ASTM A276 316 / 316L Stainless Steel Round Bar is an austenitic stainless steel product containing molybdenum, providing improved corrosion resistance, especially in chloride-containing and marine environments. 316L, the low carbon version of 316 stainless steel, offers improved weldability and better resistance to intergranular corrosion after welding.
SAKY STEEL supplies 316 and 316L stainless steel round bars in hot rolled, forged and cold drawn conditions with bright, peeled, polished and machined surfaces. Customized diameters, lengths, tolerances and inspection documents are available according to customer requirements.
316 / 316L Stainless Steel Round Bar Quick Information
Grade: 316 / 316L / UNS S31600 / UNS S31603
Standard: ASTM A276 / ASTM A479
Surface: Bright / Peeled / Polished / Turned
Diameter: Customized According to Requirement
Application: Chemical, Marine, Food, Pharmaceutical and Industrial Components
316 / 316L Stainless Steel Round Bar Specifications
| Item | Specification |
|---|---|
| Specification | ASTM A276 / ASTM A479 |
| Grade | 316 / 316L Stainless Steel |
| Length | 1000mm – 6000mm or Customized |
| Diameter Range | Customized According to Requirement |
| Production Process | Hot Rolled / Forged / Cold Drawn |
| Surface Finish | Bright / Peeled / Polished / Turned / Pickled |
| Form | Round Bar |
316 vs 316L Stainless Steel Round Bar
316 and 316L stainless steel have similar corrosion resistance and mechanical properties. The main difference is carbon content. 316L has lower carbon content, providing better resistance to sensitization and improved performance after welding.
| Grade | Feature | Typical Selection |
|---|---|---|
| 316 | Higher carbon version with excellent corrosion resistance | General industrial components |
| 316L | Lower carbon content with improved welding corrosion resistance | Chemical, marine and welded structures |
316 / 316L Stainless Steel Round Bar Equivalent Grades
316 and 316L stainless steel round bars are internationally recognized under different standards. Equivalent grades help customers identify suitable materials according to regional specifications.
| Standard | UNS | W.Nr. | EN | JIS | BS |
|---|---|---|---|---|---|
| 316 Stainless Steel | S31600 | 1.4401 / 1.4436 | X5CrNiMo17-12-2 | SUS316 | 316S31 / 316S33 |
| 316L Stainless Steel | S31603 | 1.4404 / 1.4435 | X2CrNiMo17-12-2 | SUS316L | 316S11 / 316S13 |
Chemical Composition of 316 / 316L Stainless Steel Round Bar
316 and 316L stainless steel contain chromium, nickel and molybdenum. The molybdenum addition improves resistance to pitting and crevice corrosion, especially in chloride-containing environments.
| Grade | C | Cr | Mo | Ni | Fe |
|---|---|---|---|---|---|
| 316 | ≤0.08% | 16.00-18.00% | 2.00-3.00% | 10.00-14.00% | Balance |
| 316L | ≤0.035% | 16.00-18.00% | 2.00-3.00% | 10.00-14.00% | Balance |
Mechanical Properties of 316 / 316L Stainless Steel Round Bar
Mechanical properties depend on product condition, diameter and manufacturing process. The following values are typical reference values for hot rolled round bars.
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| 316 | ≥515 | ≥205 | ≥40 |
| 316L | ≥485 | ≥170 | ≥40 |
Related Grades Comparison
316L stainless steel round bar is often selected by comparing corrosion resistance, application environment and cost requirements with other stainless steel grades.
| Grade | Main Feature | Relative Cost | Typical Application |
|---|---|---|---|
| 304 | General corrosion resistance and good fabrication performance | Lower | General industrial components |
| 316L | Molybdenum alloyed with improved chloride corrosion resistance | Medium | Marine, chemical and pharmaceutical equipment |
| 904L | Higher alloy content for severe corrosion environments | Higher | Aggressive chemical applications |
Test Report
SAKY STEEL provides material verification and inspection documentation for 316 / 316L stainless steel round bars. Testing can include PMI material identification, tensile testing, dimensional inspection and other quality verification according to customer requirements.
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Ferrite Content Test of 316 / 316L Stainless Steel Round Bar
Ferrite content testing is performed to evaluate the ferrite phase in 316 / 316L stainless steel products. The measurement can be carried out according to ASTM E562 metallographic point counting method and magnetic measurement methods when specified.
Ferrite content control helps verify material stability and is especially important for applications involving welded structures, pressure equipment, marine components and corrosion-resistant assemblies.
| Visual Area Fraction Estimate | Recommended Grid Size |
|---|---|
| 2-5% | 100 points |
| 5-10% | 49 points |
| 10-20% | 25 points |
| Above 20% | 16 points |
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Applications of 316 / 316L Stainless Steel Round Bar
316 / 316L stainless steel round bars are widely used where improved corrosion resistance, strength and durability are required. The molybdenum content makes these grades suitable for chloride-containing and corrosive environments.
- Chemical and petrochemical equipment including tanks, heat exchangers and process components.
- Marine and offshore components exposed to seawater and saline environments.
- Food and beverage processing equipment requiring corrosion resistance and hygiene.
- Pharmaceutical equipment and precision industrial components.
- Pump shafts, valve parts, fasteners and mechanical components.
- Architectural structures requiring durable stainless steel surfaces.
- Heat exchangers and industrial equipment operating in demanding environments.
SAKY STEEL Quality Assurance
SAKY STEEL applies strict quality control procedures to ensure 316 / 316L stainless steel round bars meet international standards and customer requirements. Inspection focuses on material identification, dimensional accuracy, mechanical performance and surface quality.
| Inspection Item | Purpose |
|---|---|
| Visual and Dimensional Inspection | Verify diameter, length, tolerance and surface condition. |
| Chemical Analysis | Confirm 316 / 316L stainless steel composition. |
| Mechanical Testing | Verify tensile strength, yield strength and elongation. |
| Hardness Testing | Check material condition and processing quality. |
| Ferrite Content Testing | Evaluate ferrite phase content according to requirements. |
| Surface Roughness Testing | Verify surface finish for precision applications. |
| MTC / EN 10204 3.1 | Provide material traceability documentation. |
Custom Processing Capabilities
SAKY STEEL provides customized processing services for 316 / 316L stainless steel round bars according to customer drawings, dimensions and application requirements.
- Cut-to-length service.
- Polishing and surface conditioning.
- Centreless grinding for precision tolerance.
- Machining according to customer requirements.
- Customized OEM processing support.
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 customized export packages when required.
- Protection against moisture and surface damage during shipment.
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Why Choose SAKY STEEL?
Reliable Stainless Steel Supply
SAKY STEEL supplies 316 / 316L stainless steel round bars according to ASTM, EN and JIS international standards.
Strict Quality Control
Chemical analysis, dimensional inspection, mechanical testing and additional inspections are available according to requirements.
Customized Solutions
Different diameters, lengths, surface finishes and machining options can be provided for various industrial applications.
Material Traceability
MTC and inspection documentation are available to support product verification.
Export Experience
Professional packaging and technical support are provided for global customers.
FAQ
What is the difference between 316 and 316L stainless steel round bar?
316L has lower carbon content than 316, providing improved resistance to intergranular corrosion after welding. Both grades provide excellent corrosion resistance due to molybdenum addition.
What standards apply to 316 / 316L stainless steel round bar?
316 / 316L stainless steel round bars are commonly supplied according to ASTM A276 and ASTM A479 requirements. Other international standards are available according to customer requirements.
What surface finishes are available?
Available finishes include bright, peeled, polished, turned and pickled surfaces according to application requirements.
Can customized sizes be supplied?
Yes. SAKY STEEL supplies customized diameters, lengths, tolerances and machining services according to customer requirements.
Can MTC and inspection reports be provided?
Yes. Material certificates and inspection documents can be provided according to customer requirements.
What information is required for quotation?
Please provide grade, diameter, length, quantity, surface finish, tolerance requirements and any machining requirements.
