SS Round Bars
What is a SS Round Bar?
Stainless Steel Round Bars are solid cylindrical steel rods known for their excellent corrosion resistance, strength, and machinability. These bars are commonly used across various industries for manufacturing components, fasteners, shafts, and structural applications. Their smooth surface finish and dimensional accuracy make them ideal for both industrial and architectural purposes.
Asiad Steel Industries is a leading manufacturer, supplier, and exporter of stainless steel round bars in multiple grades and finishes to meet diverse application requirements. We ensure strict quality control and compliance with global standards.
Key Features
High
Strength
Durable
Construction
Precision
Finish
Wide
Compatibility
Corrosion
Resistant
Specifications
| Specification Category | Parameter / Feature | Details / Options |
|---|---|---|
| Size Range | Diameter / Across Flats (AF) | 6 mm to 600 mm (custom sizes available) |
| Pressure Ratings | Applicable Standards | Not pressure-rated (used in structural, machining & fabrication applications) |
| Mechanical Strength | Yield Strength | 205–450 MPa (depending on grade) |
| Bar Types | SS Round Bar | Widely used in machining, fasteners, shafts, and general engineering applications |
| SS Hex Bar | Preferred for nuts, bolts, and precision components requiring wrench fitting | |
| SS Square Bar | Used in construction, ornamental, and support applications | |
| Material Options | Austenitic Stainless Steel | SS 304, SS 304L, SS 316, SS 316L, SS 321 |
| Duplex & Super Duplex | Duplex 2205, Super Duplex 2507 | |
| Other Grades | SS 410, SS 420, SS 431, SS 446 (on request) | |
| Standards & Certifications | ASME / ANSI | ASME SA276, ASME SA479 |
| ASTM | ASTM A276, ASTM A479, ASTM A582 | |
| European Standards | EN 10088-3, EN 10272 | |
| Certifications | ISO 9001, PED 2014/68/EU, NACE MR0175, IBR Approved | |
| Design Features | Length | Standard: 3 m, 6 m; Cut-to-length available |
| Tolerance | As per ASTM / EN standards (h9, h11, or custom) | |
| Edge Condition | Cold Drawn, Peeled & Ground, Smooth Turned | |
| Coating & Surface Finish | Surface Condition | Black (Hot Rolled), Bright (Cold Drawn), Centreless Ground, Polished |
| Optional Coatings | Epoxy, Zinc Coating (on request) | |
| Testing & Inspection | Non-Destructive Testing | Ultrasonic (UT), Eddy Current |
| Destructive Testing | Tensile, Hardness, Impact | |
| Other Tests | IGC Test, PMI (Positive Material Identification), Micro & Macro Analysis |
Chemical Composition
| Element | SS 304 (%) | SS 304L (%) | SS 316 (%) | SS 316L (%) |
|---|---|---|---|---|
| Chromium (Cr) | 18.0 – 20.0 | 18.0 – 20.0 | 16.0 – 18.0 | 16.0 – 18.0 |
| Nickel (Ni) | 8.0 – 10.5 | 8.0 – 12.0 | 10.0 – 14.0 | 10.0 – 14.0 |
| Carbon (C) | ≤ 0.08 | ≤ 0.03 | ≤ 0.08 | ≤ 0.03 |
| Manganese (Mn) | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 |
| Iron (Fe) | Balance | Balance | Balance | Balance |
| Molybdenum (Mo) | — | — | 2.0 – 3.0 | 2.0 – 3.0 |
Mechanical Properties
| Property | Value | Unit / Standard |
|---|---|---|
| Tensile Strength | 515 – 620 | MPa (SS 304 / SS 316) |
| Yield Strength | 205 – 310 | MPa |
| Hardness | 150 – 217 | HB (Brinell) |
| Elongation | ≥ 40 | % |
| Density | 7.9 – 8.0 | g/cm³ |
| Impact Toughness | ≥ 100 – 150 | J (Charpy, grade-dependent) |
| Modulus of Elasticity (E) | ~193 – 200 | GPa |
| Fatigue Strength | 240 – 310 | MPa |
| Corrosion Resistance | Excellent in Industrial, Marine & Chemical Environments | ASTM A276 (SS 304/316) |
| Thermal Conductivity | 14 – 16 | W/m·K |
| Coefficient of Thermal Expansion | 16 – 17 ×10⁻⁶ | /°C |
| Poisson’s Ratio | 0.27 – 0.30 | – |
| Operating Temperature Range | -196 to 870 | °C (material-dependent, SS 304/316) |
Applications of SS Round Bar
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is the difference between hot-rolled and cold-drawn round bars?
Can stainless steel round bars be welded easily?
Are your round bars available cut-to-length?
Which grade is best for marine applications?
