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Corrosion-Proof Stainless Steel Rod | Harsh Environment Use
Corrosion-Proof Stainless Steel Rod | Harsh Environment Use
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Corrosion-Proof Stainless Steel Rod | Harsh Environment Use
Product Specifications
| Parameter | Details |
|---|---|
| Material Grades | 316L, 304, 2205 Duplex, 17-4 PH (Customizable for rod end bearing stainless steel) |
| Diameter Range | Round Rods: 3–500mm; Threaded Rods: M6–M30; 1 stainless steel rod (Custom: 1–2000mm) |
| Length | 0.1–12m (Standard), Custom Lengths Available (±0.1mm Tolerance) |
| Hardness (HV) | 150–250 HV (316L); 300–400 HV (Cold-Worked/Duplex Grades) |
| Tensile Strength | 520–860 MPa (316L); 800–1,200 MPa (Duplex 2205); 700–1,000 MPa (17-4 PH) |
| Surface Finish | Polished (#4–#8 Mirror), Passivated, Electroplated (Optional), Cold Drawn |
| Welding Compatibility | mild steel to stainless steel welding rod (ER309L/312), TIG/MIG, Laser Welding |
| Certifications | ISO 9001, ASTM A276, NACE MR0175 (H₂S Resistance), EN 10088 |
Mechanical & Chemical Properties
Tensile Strength
The 1 stainless steel rod (316L grade) achieves tensile strengths of 520–860 MPa, making it ideal for marine and chemical industries due to its 2–3% molybdenum content, which resists chloride-induced pitting corrosion. For extreme environments like offshore rigs, duplex 2205 rods combine austenitic-ferritic microstructures to deliver 800–1,200 MPa tensile strength, outperforming standard grades by 40% in saltwater exposure. Precipitation-hardened 17-4 PH rods (700–1,000 MPa) are heat-treatable for aerospace and robotics applications requiring dimensional stability.
Bend Strength
Bend strength typically ranges from 60–75% of tensile strength, ensuring structural integrity under dynamic loads. For rod end bearing stainless steel components, cold-drawn 316L rods exhibit 30% higher bend resistance than annealed grades, critical for automotive suspensions and hydraulic systems. The mild steel to stainless steel welding rod (ER309L) maintains bend strength up to 430 MPa, preventing weld cracking in mixed-metal joints.
Identification & Marking
Stainless steel rods are labeled per global standards:
- ASTM A276: Specifies chemical compositions (e.g., 316L: 16–18% Cr, 10–14% Ni, 2–3% Mo).
- ISO 15510: Ensures traceability for marine and medical applications.
- Laser Etching: Permanent markings include grade (e.g., "316L-860MPa"), batch number, and tensile class.
Weight Calculation
Weight (kg) = Volume (m³) × Density (7,930 kg/m³ for austenitic steel).
Example for a 10mm diameter, 1m rod:π × (0.005m)² × 1m × 7,930 kg/m³ ≈ 0.62 kg.
For 1 stainless steel rod (25mm diameter):Weight ≈ 3.89 kg/m. Custom weights vary with alloy density (e.g., duplex 2205: 7,850 kg/m³).
Why Stainless Steel Rusts: Causes & Solutions
While stainless steel resists corrosion via a chromium oxide layer (≥10.5% Cr), specific conditions trigger rust:
- Chloride Exposure: Saltwater or de-icing salts degrade passive layers. 316L rods with molybdenum mitigate pitting in marine applications like rod end bearing stainless steel.
- Galvanic Corrosion: Contact with carbon steel accelerates oxidation. Use mild steel to stainless steel welding rod (ER309L) and insulate joints with dielectric coatings.
- Mechanical Damage: Scratches expose iron. Passivate surfaces with nitric acid post-fabrication to restore chromium oxide layers.
- Low Oxygen Environments: Stagnant water in crevices (e.g., threaded joints) breeds crevice corrosion. Design gaps >0.5mm for oxygen flow.
Why Choose Our Stainless Steel Rods
- Certified Quality: ISO 9001 and ASTM-compliant production with SGS/BV third-party inspections.
- Precision Customization: Tailor 1 stainless steel rod, rod end bearings, or threaded rods to exact dimensions (±0.1mm tolerance).
- Fast Delivery: 15–30-day lead time via DHL/FedEx global logistics.
- Sustainability: 100% recyclable alloys; lean duplex grades reduce nickel consumption by 50%.
- Technical Support: Expert guidance on welding parameters (e.g., ER309L preheat: 150–200°C) and corrosion prevention.
