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Stainless Steel Rod Supplier | 304N & 347H Options
Stainless Steel Rod Supplier | 304N & 347H Options
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Stainless Steel Rod Supplier | 304N & 347H Options
Product Specifications
Our stainless steel brazing rod and marine-grade rods are engineered for high-performance applications, combining superior corrosion resistance with exceptional mechanical strength. Available in 304N (nitrogen-enhanced) and 347H (niobium-stabilized) alloys, these rods meet ASTM, AISI, and ISO standards for industrial, marine, and aerospace use.
| Property | 304N | 347H |
|---|---|---|
| Material Grades | UNS S30451 (AISI 304N) | UNS S34709 (AISI 347H) |
| Hardness (Rockwell) | B85–B100 (cold-drawn) | C30–C40 (hot-rolled) |
| Diameter Range | 1/4" (6.35mm) to 4" (100mm) | 3/16" (4.76mm) to 6" (150mm) |
| Length | Standard: 3m, 6m; Custom up to 12m | Standard: 3m, 6m; Custom up to 12m |
| Surface Finish | Polished, Cold Drawn, Passivated | Hot Rolled, Annealed, Precision Ground |
| Tolerance | ±0.05mm (precision-ground) | ±0.03mm (laser-calibrated) |
| Temperature Range | -200°C to 870°C (intermittent) | -50°C to 1150°C (continuous) |
Key Properties & Manufacturing Process
Our stainless steel rods are produced using vacuum arc remelting (VAR) and controlled thermo-mechanical processing to eliminate impurities and enhance grain structure. Post-production treatments include quenching, tempering, and stabilization annealing for optimized performance.
Tensile & Bending Strength
- 304N:
- Tensile Strength: 620–950 MPa (enhanced by nitrogen for structural applications).
- Yield Strength: ≥310 MPa (ideal for high-stress marine hardware like stainless steel rod holders for boats).
- Bending Strength: Maintains integrity under 210–1,050 MPa stress (suitable for stainless steel fishing rod holders requiring torsional rigidity).
- 347H:
- Tensile Strength: 520–750 MPa (niobium stabilization prevents carbide precipitation in high-temperature environments).
- Yield Strength: ≥205 MPa (excellent for furnace components and exhaust systems).
Identification & Marking
Each rod features traceable identifiers for quality assurance and compliance:
- Laser-Etched Codes: AISI/SAE grade (e.g., 304N, 347H) and ISO chemical composition labels (e.g., X6CrNiNb18-10 for 347H).
- Batch Numbers: Aligned with ASTM A276 (bars) and AMS 5643 (aerospace standards).
Weight Calculation
Calculate the weight of a stainless steel brazing rod or structural rod using the formula:
Example: A 1/2" (12.7mm) diameter, 6m-long 347H rod weighs 7.5 kg, while a 3/16" (4.76mm) rod of the same length weighs 1.1 kg.
Why Does Stainless Steel Rust?
While stainless steel is corrosion-resistant, specific conditions can compromise its integrity:
- Chloride Exposure: Saltwater or industrial chemicals degrade the chromium oxide layer. 347H’s niobium content enhances resistance to chloride-induced pitting.
- Low Chromium Content: Grades with <10.5% Cr (e.g., 430) lack passivation. Our 304N and 347H alloys contain 17–20% Cr for robust protection.
- Galvanic Corrosion: Contact with carbon steel or aluminum accelerates oxidation. Use insulating sleeves or compatible alloys for marine applications like stainless steel rod holders for boats.
- Thermal Stress: Prolonged exposure above 800°C causes scaling. 347H remains stable up to 1150°C, making it ideal for high-heat industrial systems.
- Surface Contamination: Iron particles from tools induce localized pitting. Regular nitric acid passivation restores corrosion resistance.
Applications
- Stainless Steel Brazing Rod: High-strength joints in HVAC systems and chemical tanks (ER347 compatibility).
- Stainless Steel Fishing Rod Holders: Saltwater-resistant marine hardware with polished finishes for aesthetic durability.
- Industrial Machinery: Valve stems, pump shafts, and hydraulic components requiring fatigue resistance (304N’s nitrogen-enhanced strength).
- Aerospace: Turbine blades and exhaust manifolds (347H’s thermal stability).
Why Choose Our Stainless Steel Rods?
- Certified Quality: Compliant with ISO 9001, ASTM A276, and AMS 5643 standards.
- Custom Fabrication: Tailored diameters, lengths, and surface finishes (e.g., precision-ground stainless steel rod holders for boats).
- Global Logistics: 7–15-day lead time with air/sea freight options.
- Technical Support: 24/7 guidance on welding techniques (e.g., stainless steel brazing rod selection) and corrosion prevention.
- Sustainability: 60% recycled content and energy-efficient production.
Why Us?
- 20+ Years of Expertise: Specializing in high-performance alloys for extreme environments.
- Third-Party Validation: SGS/BV-tested hardness, tensile strength, and corrosion resistance.
- Cost-Efficiency: Bulk order discounts up to 20% without compromising aerospace-grade precision.
- End-to-End Solutions: From raw material sourcing to post-sale technical support.
