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Stainless Steel Rod Inventory | 304LN & 347H Stock
Stainless Steel Rod Inventory | 304LN & 347H Stock
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Stainless Steel Rod Inventory | 304LN & 347H Stock
Product Specifications
| Parameter | Details |
|---|---|
| Material Grades | 304LN (Low Carbon, Nitrogen-Stabilized), 347H (Nb-Stabilized, High-Temperature) |
| Diameter Range | Round Rods: 3–500mm; Threaded Rods: M6–M30; Custom Shapes (e.g., stainless steel boat rod holders) |
| Length | 0.1–12m (Standard), Custom Lengths Available (±0.5mm Tolerance) |
| Hardness (HV) | 150–250 HV (304LN); 200–300 HV (347H) |
| Tensile Strength | 550–800 MPa (304LN); 700–950 MPa (347H at 600°C) |
| Surface Finish | Polished (#4–#8 Mirror), BA (Bright Annealed), Passivated, Cold Drawn |
| Welding Compatibility | stainless steel filler rod tig (ER347, ER308L), MIG, Laser Welding |
| Certifications | ASTM A276, ASME SA479, EN 10088, NACE MR0175 (H₂S Resistance), ISO 15510 |
Mechanical & Chemical Properties
Tensile Strength
304LN stainless steel rod combines low carbon (0.03% max) with nitrogen (0.10–0.16%) to enhance strength (550–800 MPa) while retaining corrosion resistance in acidic environments like chemical plants. 347H alloy, stabilized with niobium (Nb), achieves 950 MPa tensile strength at 600°C, ideal for high-temperature applications such as boiler tubes and exhaust systems. This grade resists sensitization (chromium carbide precipitation) even after prolonged exposure to 450–800°C, ensuring structural integrity in power plants.
Bend Strength
Bend strength for stainless steel fishing rod components averages 60–75% of tensile strength. Cold-drawn 347H rods exhibit 30% higher bend resistance due to niobium-carbide dispersion strengthening, making them suitable for dynamic marine environments like offshore rigs. For stainless steel boat rod holders, 304LN’s ductility (45% elongation) ensures crack resistance under saltwater exposure.
Identification & Marking
Stainless steel rods are labeled per global standards for traceability:
- ASTM A276: Specifies chemical compositions (e.g., 347H: 17–19% Cr, 9–13% Ni, 10×C ≤ Nb ≤ 1.0%).
- ISO 15510: Ensures compatibility with EU and Asian markets.
- Laser Etching: Permanent markings include grade (304LN/347H), 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 stainless steel boat rod holders (25mm diameter):Weight ≈ 3.89 kg/m. Custom weights vary based on alloy density and surface treatments.
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 degrades passive layers. 347H rods with niobium mitigate pitting in marine applications like stainless steel fishing rod components.
- Galvanic Corrosion: Contact with carbon steel accelerates oxidation. Insulate metals using nylon spacers or dielectric coatings.
- Mechanical Damage: Scratches expose iron. Passivate surfaces with nitric acid post-fabrication.
- 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: ASTM/ASME-compliant production with SGS/BV third-party inspections.
- Customization: Tailor stainless steel boat rod holders, fishing rods, or tig filler rods to exact dimensions (±0.1mm tolerance).
- Fast Delivery: 15–30-day lead time via DHL/FedEx global logistics.
- Sustainability: 100% recyclable alloys; nitrogen-enhanced 304LN reduces nickel consumption by 20%.
- Technical Support: Expert guidance on welding parameters (e.g., stainless steel filler rod tig ER347 preheat: 150–200°C).
