Stainless Steel Bar
Ready to Ship
Stainless Steel Round Bar (Grade 304, 316L)
Stainless Steel Round Bars (Solid Bars) are essential for high-precision engineering and CNC machining. Available in Cold Drawn (Bright) for high accuracy and Hot Rolled (Peeled) for heavy-duty applications. Grades 304 and 316L in stock.
High Performance
Industrial Material
Industrial Material
Premium Stainless Steel Round Bars for High-Precision Machining
Stainless Steel Round Bars are solid cylindrical metal bars widely used in engineering and manufacturing of industrial components. We supply round bars with consistent hardness throughout the length, ensuring superior machinability, excellent surface finish, and extended life for your cutting tools. Ideal for both high-end CNC machining and general structural projects.
Cold Drawn (Bright) vs. Hot Rolled (Peeled)
| Features | Cold Drawn (Bright Bar) | Hot Rolled (Peeled / Matte) |
|---|---|---|
| Surface Finish | Smooth, bright, and reflective. | Matte, rougher, or peeled surface. |
| Dimensional Tolerance | High Precision (h9 / h11). Perfect for bearings. | Moderate (k11 / k13). |
| Common Sizes | Small to medium diameters (up to 4 inches). | Large diameters (4 inches and above). |
| Ideal Applications | Precision CNC parts, shafts, decorative items. | Heavy structures, machining blanks. |
Technical Specifications
Standard: ASTM A276 / JIS G4303 / ASTM A484
Available Grades: 304, 304L, 316, 316L, 310S, 420J2, 431, 630 (17-4PH)
Standard Length: 6.0 Meters (Custom Cut-to-Length services available)
Typical Mechanical Properties (304/316L)
| Property | Value (Typical) |
|---|---|
| Tensile Strength | ≥ 515 MPa |
| Yield Strength | ≥ 205 MPa |
| Hardness | ≤ 215 HB (Annealed) |
Standard Weight Chart (kg per 6-meter bar)
| Diameter (Inch) | Diameter (mm) | Weight (kgs / 6m) |
|---|---|---|
| 1/8" | 3.17 | 0.375 |
| 3/16" | 4.76 | 0.86 |
| 1/4" | 6.35 | 1.50 |
| 5/16" | 7.94 | 2.35 |
| 3/8" | 9.52 | 3.30 |
| 1/2" | 12.70 | 6.00 |
| 5/8" | 15.80 | 9.60 |
| 3/4" | 19.05 | 13.60 |
| 7/8" | 22.22 | 18.60 |
| 1" | 25.40 | 24.20 |
| 1 1/4" | 31.75 | 37.80 |
| 1 1/2" | 38.10 | 54.20 |
| 1 5/8" | 41.20 | 64.00 |
| 1 3/4" | 44.40 | 74.00 |
| 2" | 50.80 | 96.20 |
| 2 1/4" | 57.15 | 122.50 |
| 2 1/2" | 63.50 | 151.20 |
| 3" | 76.20 | 218.00 |
| 3 1/4" | 82.50 | 255.00 |
| 3 1/2" | 88.90 | 296.00 |
| 4" | 101.60 | 388.00 |
| 4 1/2" | 114.30 | 490.00 |
| 5" | 127.00 | 605.00 |
| 5 1/2" | 139.70 | 732.00 |
| 6" | 152.40 | 871.00 |
Frequently Asked Questions (FAQ)
h9 is a standardized ISO tolerance for precision bars. It guarantees that the diameter will never be oversized (0/- tolerance), allowing for a perfect fit into standard bearings, sleeves, or pre-drilled holes without additional machining.
Yes. If your application requires high hardness and wear resistance, we recommend Martensitic grades such as 420J2 or 431. These can be heat-treated to achieve superior mechanical properties for tools and frictional components.
