Stainless Steel Rods / Bars
What are Stainless Steel Rods & Bars?
Stainless Steel Rods and Bars are long, solid metal products manufactured from corrosion-resistant stainless steel alloys. They are used in structural frameworks, shafts, fasteners, tooling, and various industrial components. Available in multiple shapes like round, square, flat, and hex, these bars offer high strength, excellent machinability, and durability across a wide temperature range.
Asiad Steel Industries is a prominent manufacturer and global supplier of high-quality stainless steel rods and bars, offering precision-cut lengths and custom alloys to meet diverse engineering and construction needs.
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 |
Dimensions
| Size (mm) | SS Round Bar Weight (kg/m) | SS Hex Bar Weight (kg/m) | SS Square Bar Weight (kg/m) | Cross-Sectional Area (cm²) | Common Applications |
|---|---|---|---|---|---|
| 6 | 0.22 | 0.24 | 0.28 | 0.28 | Small fasteners, pins |
| 8 | 0.40 | 0.43 | 0.50 | 0.50 | Bolts, light machining |
| 10 | 0.62 | 0.67 | 0.79 | 0.79 | Shafts, fittings |
| 12 | 0.89 | 0.96 | 1.13 | 1.13 | Screws, machine parts |
| 16 | 1.58 | 1.70 | 2.01 | 2.01 | Structural use, connectors |
| 20 | 2.47 | 2.65 | 3.14 | 3.14 | Heavy bolts, tool parts |
| 25 | 3.85 | 4.15 | 4.91 | 4.91 | Shafts, studs, fasteners |
| 30 | 5.54 | 5.98 | 7.06 | 7.06 | Fabrication, supports |
| 40 | 9.87 | 10.63 | 12.55 | 12.57 | Machine shafts, auto parts |
| 50 | 15.41 | 16.56 | 19.63 | 19.63 | Construction, heavy fittings |
| 60 | 22.20 | 23.81 | 28.27 | 28.27 | Industrial machinery |
| 80 | 39.49 | 42.38 | 50.27 | 50.27 | Marine, oil & gas components |
| 100 | 61.60 | 67.08 | 78.50 | 78.50 | Large shafts, heavy equipment |
| 150 | 138.50 | – | – | 176.71 | Forged components |
| 200 | 246.40 | – | – | 314.16 | Specialized heavy industry |
Mechanical Properties
| Property | Value | Unit / Standard |
|---|---|---|
| Tensile Strength | 500 – 750 | MPa (Grade-dependent: SS304, SS316, SS321) |
| Yield Strength | 210 – 450 | MPa |
| Hardness | 150 – 200 | HB (Brinell) |
| Elongation | ≥ 35 | % (in 50 mm gauge length) |
| Density | 7.9 – 8.0 | g/cm³ |
| Impact Toughness | ≥ 100 | J (Charpy V-Notch, typical) |
| Modulus of Elasticity (E) | ~200 | GPa |
| Fatigue Strength | 240 – 400 | MPa |
| Corrosion Resistance | Excellent in atmospheric & mild chemical environments (316 > 304 > 321) | – |
| Thermal Conductivity | 14 – 16 | W/m·K (at 100°C) |
| Coefficient of Thermal Expansion | 16 – 17 ×10⁻⁶ | /°C (20–100°C range) |
| Yield Ratio (YS/UTS) | 0.40 – 0.60 | – |
| Poisson’s Ratio | 0.27 – 0.30 | – |
| Magnetic Permeability | Non-magnetic (304, 316) / Slightly magnetic after cold work | – |
| Surface Finish | Hot Rolled, Cold Drawn, Polished, Bright | – |
| Operating Temperature Range | -196 to 870 | °C (Grade-dependent; SS316 performs better at high T) |
| Standards | ASTM A276 / A479, EN 10088 | – |
Chemical Composition
| Element | SS 304 (%) | SS 304L (%) | SS 316 (%) | SS 316L (%) |
|---|---|---|---|---|
| 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 |
| 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 |
| Molybdenum (Mo) | — | — | 2.0 – 3.0 | 2.0 – 3.0 |
| Nitrogen (N) | — | — | ≤ 0.10 | ≤ 0.10 |
| Iron (Fe) | Balance | Balance | Balance | Balance |
Applications of Stainless Steel Rods / Bars
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 stainless steel round bars and hex bars?
Are these bars available in both hot rolled and cold drawn conditions?
Can you supply custom-cut lengths?
Which grade is best for marine applications?
