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Help CenterStainless Steel Rod 304 Used For Automotive Shafts Machining Parts 20mm Diameter 3m
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Hemaokang Steel (Shandong) Co., Ltd. is a professional manufacturer and exporter of high-quality stainless steel rods, established in 2025 with an annual export value exceeding US$50 million. Our 304 Stainless Steel Rod with a diameter of 20mm and a standard length of 3 meters is specifically designed for automotive shafts and precision machining parts. Manufactured under strict ISO9001 quality management, this rod offers excellent corrosion resistance, good machinability, and consistent mechanical properties, making it a reliable choice for demanding automotive applications.
With a team of 51–100 skilled employees and modern production facilities, we ensure each rod meets tight dimensional tolerances and surface quality standards. Our products are exported to major markets across North America, South America, Europe, Asia, Africa, and Oceania, trusted by clients in the automotive, machinery, and industrial sectors. Below we provide detailed technical specifications, key features, and answers to common questions to help you make an informed purchase.
Key Product Features & Technical Specifications
| Grade | 304 (UNS S30400 / EN 1.4301) |
| Diameter | 20mm (tolerance: H9 standard, customizable) |
| Length | 3m (other lengths available upon request) |
| Surface Finish | Bright (cold drawn), Pickled, or Customized |
| Tensile Strength | ≥ 520 MPa (typical) |
| Yield Strength | ≥ 205 MPa (typical) |
| Hardness | ≤ 187 HB (as supplied) |
| Corrosion Resistance | Excellent in atmospheric and mild chemical environments |
Detailed Product Advantages
- Superior Machinability: 304 stainless steel offers excellent chip control and low tool wear, ideal for turning, milling, drilling, and grinding of automotive shafts and precision parts.
- Consistent Dimensional Accuracy: Our rods are produced with tight diameter tolerance (H9 as standard), ensuring minimal variation and reliable fit in mating components.
- High Strength & Durability: With a tensile strength of ≥520 MPa, the rod withstands high torque and dynamic loads typical in automotive shaft applications.
- Outstanding Corrosion Resistance: The 304 grade provides robust protection against rust and oxidation, extending the service life of shafts in harsh environments.
- Versatile Surface Options: Choose from bright-drawn, pickled, or customized surface finishes to meet specific aesthetic or functional requirements.
- Customizable Length & Packaging: We offer rods cut to your exact length (up to 6m or more) and packaged with protective wrapping to prevent surface damage during transit.
- Cost-Effective Solution: Compared to higher-grade alloys, 304 provides an excellent balance of performance and price, suitable for large-scale automotive production.
Customer Benefits
- Reduced Machining Time: Consistent material properties allow faster cutting speeds and longer tool life, lowering per-part production cost.
- Improved Reliability: ISO9001-certified production ensures traceability and repeatable quality, reducing rejection rates in your manufacturing line.
- Global Supply Capability: With annual export of US$50–100 million, we maintain large inventory and fast delivery to markets worldwide.
- Technical Support: Our experienced team provides material certifications, test reports, and application guidance to help you select the optimal rod specification.
Frequently Asked Questions (FAQ)
Q1: What is the standard tolerance for the 20mm diameter rod?
A: The standard diameter tolerance is H9 (0 to -0.052 mm for 20mm). Tighter or looser tolerances can be customized upon request.
Q2: Can I get the rod cut to a non-standard length?
A: Yes, we can cut the rod to any length from 0.5m up to 6m. Please specify your required length when placing an order.
Q3: Does the rod come with a material test certificate (MTC)?
A: Yes, we provide a mill test certificate per EN 10204 3.1 or 2.2 as standard. Additional third-party inspection is available upon request.
Q4: What surface finish is best for automotive shaft machining?
A: Bright-drawn finish is commonly used for machining because of its precise dimensions and smooth surface. Pickled finish is also suitable for applications where a matte surface is acceptable.
Q5: Is this rod suitable for welding or further heat treatment?
A: 304 stainless steel is weldable using common methods (TIG, MIG). However, heat treatment is not typically required for this grade. If you need specific heat treatment, please consult our technical team.
Q6: How is the rod packaged to prevent damage during shipping?
A: Each rod is wrapped with protective paper or plastic, then bundled with steel straps and loaded onto pallets or in wooden crates for sea/air freight. Additional anti-rust coating can be applied for long-distance shipping.
Q7: What is the minimum order quantity (MOQ)?
A: Our typical MOQ is 500 kg for standard sizes, but smaller quantities may be accepted for sample orders. Please contact us for details.
Q8: Do you supply other stainless steel grades (e.g., 316, 303, 304L)?
A: Yes, we offer a wide range of stainless steel grades, including 316, 303, 304L, 321, and 410. Custom specifications are also available.
Why Choose Hemaokang Steel?
Since our establishment in 2025, Hemaokang Steel (Shandong) Co., Ltd. has grown into a leading supplier of stainless steel rods, exporting US$50–100 million annually to over 15 regions worldwide. With ISO9001 certification and a dedicated team of 51–100 employees, we ensure every 20mm diameter, 3m length rod meets the highest quality standards. Our deep understanding of automotive shaft machining allows us to deliver products that optimize your production efficiency and reduce costs. We invite you to request a quotation or sample to experience the Hemaokang difference. Contact us today to discuss your specific requirements!
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