ASTM A276 Stainless Steel Round Bar 5-950mm High Hardness Corrosion Resistant Rod
ASTM A276 304 316L Stainless Steel Round Bar Stainless Steel Rod Corrosion Resistant For Industrial Applications
ASTM A276 304/316L Stainless Steel Round Bar is a premium austenitic stainless steel product manufactured to ASTM A276 standards. It offers outstanding corrosion resistance, excellent mechanical properties, superior weldability, and excellent formability, making it one of the most widely used stainless steel bars in industrial manufacturing.
Grade 304 is the most versatile stainless steel, suitable for general industrial and structural applications, while 316L contains molybdenum (Mo), providing enhanced resistance to chloride corrosion and harsh chemical environments. Both grades are available in hot rolled, cold drawn, bright, peeled, and ground finishes to meet diverse engineering requirements.
| Product Name |
ASTM A276 304/316L Stainless Steel Round Bar |
Diameter | 3–500 mm |
| Tolerance | ±1% | Length | 3 m, 6 m, or Customized |
| Certification | ISO 9001 | UNS | S30400 / S31603 |
| Keyword | stainless steel | Material | 304 316L |
| Standard | ASTM A276, ASTM A479, ASTM A582 | Grade | 300 series |
| Welding Line Type | Seamless | Application | Construction |
| Delivery Time | 8 ~ 14 days | Surface | Hot Rolled, Bright, Peeled, Ground, Polished |
| Specifications | Round | Shape | Round |
| Model Number | 304 316L | Technique | Cold Rolled Hot Rolled |
| Place of Origin | Other | Advantage | High strength, good impact toughness and good overall and local stress corrosion resistance |
| Material Status | Large stock or fast new production | Package | Standard Package |
| Processing Service | Bending, Welding, Decoiling, Punching, Cutting | Payment | T/T30% Deposit+70% Advance |
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤0.08 |
| Silicon (Si) | ≤1.00 |
| Manganese (Mn) | ≤2.00 |
| Phosphorus (P) | ≤0.045 |
| Sulfur (S) | ≤0.030 |
| Chromium (Cr) | 18.0–20.0 |
| Nickel (Ni) | 8.0–10.5 |
| Nitrogen (N) | ≤0.10 |
| Iron (Fe) | Balance |
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤0.03 |
| Silicon (Si) | ≤1.00 |
| Manganese (Mn) | ≤2.00 |
| Phosphorus (P) | ≤0.045 |
| Sulfur (S) | ≤0.030 |
| Chromium (Cr) | 16.0–18.0 |
| Nickel (Ni) | 10.0–14.0 |
| Molybdenum (Mo) | 2.0–3.0 |
| Nitrogen (N) | ≤0.10 |
| Iron (Fe) | Balance |
| Property | 304 | 316L |
|---|---|---|
| Density | 7.93 g/cm³ | 8.00 g/cm³ |
| Melting Range | 1400–1450°C | 1375–1400°C |
| Elastic Modulus | 193 GPa | 193 GPa |
| Thermal Conductivity | 16.2 W/m·K | 16.3 W/m·K |
| Specific Heat | 500 J/kg·K | 500 J/kg·K |
| Electrical Resistivity | 0.72 μΩ·m | 0.74 μΩ·m |
| Thermal Expansion | 17.2 ×10⁻⁶/K | 16.0 ×10⁻⁶/K |
| Magnetic Property | Essentially non-magnetic (annealed) | Essentially non-magnetic (annealed) |
| Property | 304 | 316L |
|---|---|---|
| Tensile Strength | ≥515 MPa | ≥485 MPa |
| Yield Strength (0.2%) | ≥205 MPa | ≥170 MPa |
| Elongation | ≥40% | ≥40% |
| Hardness | ≤201 HB | ≤217 HB |
- Excellent resistance to atmospheric corrosion
- Good resistance to oxidation and moisture
- Suitable for food processing and general industrial environments
- Performs well in mild chemical conditions
- Ideal for indoor and outdoor structural applications
- Superior resistance to pitting and crevice corrosion
- Excellent resistance to chloride-containing environments
- Outstanding performance in seawater splash zones
- Better resistance to acids and chemical media than 304
- Low carbon content minimizes the risk of intergranular corrosion after welding
| Grade | Main Characteristics | Advantages of 304/316L |
|---|---|---|
| 201 | Lower nickel content, economical | 304/316L offer significantly better corrosion resistance, toughness, and service life. |
| 303 | Free-machining stainless steel | 304/316L provide superior weldability and corrosion resistance. |
| 304 | General-purpose stainless steel | Cost-effective solution for most industrial applications. |
| 316 | Better chloride resistance | 316L has lower carbon content, improving weldability and reducing intergranular corrosion after welding. |
| 321 | Titanium-stabilized for high temperatures | 304/316L are more economical for ambient-temperature applications; 316L excels in corrosive environments. |
| 410 | Martensitic stainless steel | 304/316L offer much better corrosion resistance and ductility. |
| 420 | High hardness | 304/316L are easier to weld and more resistant to corrosion. |
| 2205 Duplex | Very high strength and chloride resistance | 304/316L provide easier fabrication, wider availability, and lower cost for general-purpose applications. |
We use high-quality stainless steel billets from qualified mills to ensure consistent chemical composition and mechanical performance.
Our bars are produced using advanced hot rolling, cold drawing, peeling, centerless grinding, and precision machining processes.
Every batch undergoes:
- Chemical composition analysis
- Mechanical property testing
- Ultrasonic Testing (UT)
- Positive Material Identification (PMI)
- Surface quality inspection
- Dimensional inspection
Mill Test Certificate (EN 10204 3.1) and third-party inspection services are available.
- Diameter: 3–500 mm
- Standard lengths: 3 m, 6 m
- Custom dimensions available
We offer:
- Precision cutting
- CNC machining
- Turning
- Grinding
- Threading
- Chamfering
- Polishing
- OEM manufacturing
Since 2008, we have supplied stainless steel bars to customers worldwide across the construction, chemical, marine, food processing, energy, and machinery industries, backed by stable production capacity and efficient export logistics.
304 is a versatile general-purpose stainless steel suitable for most industrial applications. 316L contains molybdenum, providing superior resistance to chlorides, seawater, and aggressive chemical environments.
316L is recommended for marine and coastal environments because its molybdenum content significantly improves resistance to pitting and crevice corrosion caused by chlorides.
In the annealed condition, both grades are essentially non-magnetic. However, cold working may introduce slight magnetic properties.
Yes. Both 304 and 316L have excellent weldability and are compatible with TIG, MIG, laser, and resistance welding. Due to its lower carbon content, 316L offers better resistance to intergranular corrosion after welding.
We supply diameters from 3 mm to 500 mm with standard lengths of 3 m and 6 m. Custom sizes and cut-to-length services are available.
We offer:
- Hot Rolled
- Bright Drawn
- Peeled
- Ground
- Polished
Yes. Every shipment can include an EN 10204 3.1 Mill Test Certificate. Third-party inspections by SGS, BV, TÜV, or other internationally recognized agencies can also be arranged.
Yes. We provide precision cutting, CNC machining, drilling, turning, threading, chamfering, grinding, and polishing according to customer drawings or specifications.
These products are widely used in:
- Construction and architecture
- Food and beverage processing
- Chemical and petrochemical industries
- Marine engineering
- Oil & gas
- Power generation
- Pharmaceutical manufacturing
- Machinery and equipment manufacturing
With over 18 years of manufacturing and export experience, we provide factory-direct pricing, extensive inventory, fast global delivery, strict quality control, international standard compliance, OEM/custom machining services, and professional technical support to help customers source reliable stainless steel round bars for a wide range of industrial applications.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.