Mechanical Properties
| Tensile strength (Rm) | Yield strength (Rp0.2) | Elongation (A5) | Reduction of Area (Z) | Hardness |
| ≥ 520 MPa | ≥ 205 MPa | ≥ 40% | ≥ 60% | ≤ 187 HBW; ≤ 90 HRBW; ≤ 200 HV |
Austenitic Stainless Steel Precision Ground Bars
304L Stainless Centerless Ground Round Bar AISI 304L | UNS S30403
304 stainless steel precision ground rod is a reliable choice for customers who need good corrosion resistance, balanced mechanical performance, and stable dimensional accuracy for general industrial applications. Its combination of strength, toughness, and surface quality makes it suitable for components that must operate smoothly in pneumatic, hydraulic, fluid control, and processing equipment.
Compass Power Tech manufactures 304 stainless steel precision ground rods for cylinder parts, hydraulic cylinder components, valves, pumps, water treatment equipment, mixers, and other machinery where corrosion resistance and consistent performance are required.
For customers looking for a widely used stainless steel grade with dependable performance across many working environments, 304 stainless steel precision ground rod provides a practical balance of durability, machinability, and cost efficiency.
Chemical Composition (%)
| Grade | C | Si | Mn | P | S | Ni | Cr | Mo | Cu | Others |
| 304L (S30403) | ≤ 0.030 | ≤ 1.00 | ≤ 2.00 | ≤ 0.045 | ≤ 0.030 | 8.00–12.00 | 18.00–20.00 | - | - | - |
Specifications
| Diameter | Tolerance | Roundness | Straightness | Standard Length | Surface Roughness |
| |
≤0.1mm/m | g6, h6, f7 | ≤1/2 | 2m 3m | Ra≤0.4 |
| |
≤0.1mm/m | g6, h6, f7 | ≤1/2 | 3m, 6m | Ra≤0.4 |
| |
≤0.1mm/m | g6, h6, f7 | ≤1/2 | 3m, 6m | Ra≤0.4 |
| |
≤0.05mm/m | g6, h6, f7 | ≤1/2 | 3m, 6m | Ra≤0.4 |
| |
≤0.05mm/m | g6, h6, f7 | ≤1/2 | 3m, 6m | Ra≤0.4 |
Additional Custom Services
- Cut-to-length service: Shaft length can be customized according to customer assembly requirements.
- End chamfering: Both ends of the shaft can be chamfered to simplify downstream machining and installation.
- Drawing-based machining: Shafts can be machined according to customer drawings and supplied as ready-to-assemble components.
- Surface rolling treatment: Surface rolling can be applied to improve surface hardness when higher wear resistance is required.
Packaging and Storage
To protect stainless steel precision ground shafting during sea freight and storage, Compass Power Tech uses anti-rust paper tube packaging. Before wrapping, anti-rust oil is applied evenly to the shaft surface, and anti-rust wax is applied inside the paper tube. This protection process helps reduce corrosion risk during transportation and ensures customers receive shafts in stable, ready-to-use condition.
Looking for Custom Metal Components for Your Application?
We manufacture precision ground shafts, stainless steel tubing, piston rods and aluminum alloy cylinder tubes for hydraulic, pneumatic, machinery, energy and transportation applications. Contact us for material selection, specifications and customization support.
