316L Stainless Steel Round Bar ASTM A479 UNS S31603 EN 10272 1.4404
Standard:ASTM A479 / EN 10272
Diameter Range:Ø3 mm – Ø500 mm
Length:3000 mm / 6000 mm / Customized Length Available
Surface Finish:Black, Bright, Peeled, Ground, Polished
Products Description
ASTM A479 UNS S31603 316L Stainless Steel Round Bar is a premium austenitic stainless steel round bar manufactured according to ASTM A479 specification and equivalent to EN 10272 1.4404 stainless steel bar. It is widely used for pressure equipment, chemical processing, marine engineering, pharmaceutical machinery, and other applications requiring excellent corrosion resistance and high durability.
UNS S31603 is the low-carbon version of 316 stainless steel, commonly known as 316L stainless steel. The reduced carbon content improves resistance to intergranular corrosion after welding, making it an ideal choice for welded structures and components exposed to corrosive environments.
JUDE STEEL supplies ASTM A479 UNS S31603 316L stainless steel round bars in various diameters, surface finishes, and customized dimensions with EN 10204 3.1 material certificates available.
UNS S31603 Stainless Steel Round Bar specifications
| Item | Specification |
|---|---|
| Product Name | ASTM A479 UNS S31603 316L Stainless Steel Round Bar |
| Material Grade | 316L Stainless Steel / UNS S31603 |
| EN Grade | EN 1.4404 / X2CrNiMo17-12-2 |
| Standards | ASTM A479 / EN 10272 |
| Material Type | Austenitic Stainless Steel |
| Shape | Solid Round Bar |
| Diameter Range | Ø3 mm – Ø500 mm |
| Common Sizes | Ø6, Ø8, Ø10, Ø12, Ø16, Ø20, Ø25, Ø30, Ø40, Ø50, Ø60, Ø80, Ø100 mm |
| Length | 3000 mm / 6000 mm / Customized Length Available |
| Manufacturing Process | Hot Rolled / Cold Drawn / Peeled / Ground |
| Heat Treatment | Solution Annealed |
| Surface Finish | Black, Bright, Peeled, Ground, Polished |
| Dimensional Tolerance | h9–h11 (Cold Drawn / Peeled); Customized tolerances available |
| Precision Grade | h6–h9 available for precision ground bars |
| Density | 8.0 g/cm³ |
| Melting Point | 1370–1400°C |
| Maximum Continuous Service Temperature | Approx. 800°C |
| Magnetic Property | Non-magnetic in annealed condition |
| Weldability | Excellent |
| Corrosion Resistance | Excellent, especially chloride corrosion resistance |
| Certification | EN 10204 3.1 Material Test Certificate (MTC) Available |
Basic Characteristics Of ASTM A479 UNS S31603 316L Stainless Steel Round Bar
Shape: Solid round bar (Round Bar)
Diameter Range: Ø3–500 mm
Length: 3 m / 6 m / Customized lengths available
Tolerance Precision: h9–h6 (depending on manufacturing process)
Temperature Resistance: Continuous service temperature up to approximately 800°C
Material Advantages: Low-carbon 316L stainless steel with excellent chloride corrosion resistance and superior weldability
Main Applications: Chemical processing equipment, pressure vessels, marine engineering, heat exchangers, pharmaceutical equipment
Chemical Composition Of ASTM A479 316L Stainless Steel Round Bar
ASTM A479 UNS S31603 / EN 1.4404
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤0.030 |
| 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 |
Mechanical Properties Of UNS S31603 Stainless Steel Bar
| Property | Value |
|---|---|
| Tensile Strength | ≥485 MPa |
| Yield Strength | ≥170 MPa |
| Elongation | ≥40% |
| Hardness | ≤95 HRB |
| Reduction of Area | ≥50% |
Physical Properties Of EN 10272 1.4404 Stainless Steel Round Bar
| Property | Value |
|---|---|
| Density | 8.0 g/cm³ |
| Melting Point | 1370–1400°C |
| Elastic Modulus | 193 GPa |
| Thermal Conductivity | 16.3 W/m·K |
| Electrical Resistivity | 0.74 μΩ·m |
| Thermal Expansion Coefficient | 16.0 ×10⁻⁶ /°C |
316L Stainless Steel Round Bar Surface Finish Options
| Surface Finish | Description |
|---|---|
| Black Surface | Hot rolled finish for general industrial use |
| Peeled Surface | Improved surface quality and dimensional accuracy |
| Bright Drawn | Smooth finish with tighter tolerance |
| Centerless Ground | High precision machining applications |
| Polished | Decorative and sanitary applications |
Applications of UNS S31603 Stainless Steel Round Bar
Chemical Processing Industry
Chemical equipment
Reactor components
Pump shafts
Valve bodies
piping systems
Marine & Offshore Industry
Marine fasteners
Offshore structures
Seawater equipment
Shipbuilding components
Pharmaceutical & Food Processing
Sanitary equipment
Mixing shafts
Storage tanks
Food processing machinery
Pressure Equipment
Pressure vessels
Heat exchangers
Boiler components
High-temperature equipment
ASTM A479 UNS S31603 vs Other Stainless Steel Grades
| Grade | Corrosion Resistance | Typical Application |
|---|---|---|
| 304 | Good | General industrial use |
| 316 | Excellent | Marine & chemical applications |
| 316L (S31603) | Excellent + Welded Applications | Pressure equipment, pharmaceutical |
| 904L | Superior | Severe corrosion environments |
Why Choose Our ASTM A479 UNS S31603 316L Round Bar?
✔ Manufacturer and exporter of stainless steel products
✔ ASTM A479 compliant material
✔ EN 10272 1.4404 European equivalent grade
✔ Wide size range and custom production
✔ Competitive factory pricing
✔ Full inspection documents available
✔ Global export experience
FAQ
What is ASTM A479 UNS S31603 stainless steel round bar?
ASTM A479 UNS S31603 stainless steel round bar is a 316L low-carbon stainless steel bar designed for demanding applications requiring corrosion resistance, weldability, and mechanical strength.
Is UNS S31603 the same as 316L?
Yes. UNS S31603 is the standard designation for 316L stainless steel.
What is EN 1.4404 stainless steel?
EN 1.4404 is the European equivalent of UNS S31603 / 316L stainless steel, specified under EN 10272 for stainless steel bars.
What is ASTM A479 used for?
ASTM A479 covers stainless steel bars and shapes used mainly in pressure vessels, high-temperature service, and industrial applications.
Can you supply customized sizes?
Yes. We provide customized diameters, lengths, surface finishes, and machining services according to customer requirements.
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