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Hemaokang Steel (Shandong) Co., Ltd. is proud to offer our premium 316 Stainless Steel Round Bar for Marine Hardware Shafts – a high-strength, corrosion-resistant solution specifically engineered for demanding marine environments. With a diameter of 25mm, this round bar is ideal for fabricating propeller shafts, rudder stock, pump shafts, and other marine hardware components that require exceptional durability and reliability. Backed by an annual export value of US$50–100 million and a team of 51–100 experienced professionals, we ensure each bar meets the rigorous standards of the global marine industry.
Our 316 stainless steel round bar is manufactured using advanced cold drawing and polishing techniques, delivering a smooth surface finish and consistent dimensional accuracy. The material’s molybdenum content provides enhanced resistance to pitting and crevice corrosion in chloride-rich seawater, making it a trusted choice for boat builders, shipyards, and offshore equipment manufacturers. Whether you need standard lengths or custom-cut options, we offer flexible solutions to match your project requirements.
Key Features & Technical Specifications
- Superior Corrosion Resistance: Grade 316 stainless steel contains 2–3% molybdenum, offering excellent protection against saltwater, acids, and harsh chemicals.
- High Strength & Toughness: Typical tensile strength of ≥585 MPa and yield strength of ≥290 MPa ensure reliable performance under heavy loads and cyclic stresses.
- Precision Diameter – 25mm: Tight tolerances (±0.05mm) for easy machining and fitting into shaft assemblies.
- Versatile Length Options: Available in standard 3m, 6m, or custom lengths – no minimum order quantity required.
- Smooth Surface Finish: Bright, cold-drawn or polished finish reduces friction and improves wear resistance.
- Full Traceability: Each batch is supplied with mill test certificates (MTC) per ASTM A276.
| Parameter | Value |
|---|---|
| Material Grade | AISI 316 / UNS S31600 |
| Diameter (mm) | 25.0 ±0.05 |
| Tensile Strength (MPa) | ≥585 |
| Yield Strength (MPa) | ≥290 |
| Hardness (HRB) | ≤95 |
| Elongation (%) | ≥40 |
| Surface Finish | Bright / Cold Drawn / Polished |
| Applicable Standard | ASTM A276, AISI 316 |
Benefits for Your Marine Applications
- Extended Service Life: The exceptional corrosion resistance of 316 stainless steel significantly reduces maintenance intervals and replacement costs in marine environments.
- Enhanced Safety: High strength and fatigue resistance ensure that shafts withstand torsional and bending loads without failure, protecting critical equipment.
- Easy Machinability: The bar’s uniform grain structure and consistent hardness allow for smooth turning, drilling, and threading, saving time in production.
- Global Compatibility: Our bars conform to international standards (ASTM, AISI), making them suitable for OEM and aftermarket marine parts worldwide.
- Customizable Options: We can provide bars with additional certifications (e.g., NACE MR0175 for sour service) or special tolerances upon request.
Trust Hemaokang Steel for Your Supply Chain
As a newly established company in 2025, Hemaokang Steel (Shandong) Co., Ltd. has quickly become a reliable partner in the global steel market. With an annual export value exceeding US$50 million and a dedicated workforce of 51–100 employees, we have the capacity and expertise to fulfill large-volume orders without compromising quality. Our ISO9001-certified quality management system ensures that every 316 stainless steel round bar is rigorously inspected for dimensional accuracy, chemical composition, and mechanical properties. We serve diverse markets including North America, South America, Europe, Asia, Africa, and Oceania, delivering consistent performance and competitive pricing.
Choosing Hemaokang Steel means partnering with a supplier that prioritizes material traceability, timely delivery, and customer satisfaction. Whether you are building a new yacht, repairing a commercial vessel, or manufacturing marine equipment, our 25mm diameter 316 stainless steel round bar is the foundation of a durable, long-lasting shaft. Contact us today for a quote, sample, or technical consultation. We look forward to supporting your next marine project.
Frequently Asked Questions (FAQ)
-
What is the difference between 304 and 316 stainless steel for marine shafts?
316 contains molybdenum, which provides superior resistance to chloride-induced corrosion (pitting and crevice corrosion) in seawater. For marine shafts where saltwater exposure is constant, 316 is the recommended grade. -
Can you supply bars longer than 6 meters?
Yes, we can cut and supply custom lengths up to 12 meters (subject to transportation constraints). Please specify your required length when placing an order. -
Do you offer heat treatment or tempering?
While our standard 316 round bar is supplied in the annealed condition, we can arrange for additional heat treatment (e.g., solution annealing) if required. Discuss your needs with our sales team. -
Is this material suitable for welding onto flanges or couplings?
Yes, 316 stainless steel has good weldability. We recommend using 316L filler metal to maintain corrosion resistance. Pre- and post-weld cleaning is essential to avoid contamination. -
What packaging do you use for export?
Bars are bundled with steel straps, wrapped in waterproof paper, and packed in wooden crates or containers to prevent damage during transit. Surface protection coatings are available upon request. -
Do you provide mill test certificates (MTC)?
Yes, each shipment is accompanied by an MTC documenting the chemical composition and mechanical properties per ASTM A276. Additional third-party inspection can be arranged. -
What is the typical lead time for 25mm diameter 316 round bars?
For standard sizes and lengths, lead time is 7–15 days after order confirmation. Custom orders may require 20–30 days depending on quantity and specifications. -
Can I order a small sample before bulk purchase?
Absolutely. We offer sample pieces (e.g., 300mm length) at a nominal cost, which can be deducted from your first bulk order. Contact us for sample availability.
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