Stainless Steel Rod Kits | Threaded & Welding Bundles

Product Specifications

Mechanical & Chemical Properties

Tensile Strength

The stainless steel 316 welding rods achieve tensile strengths of 520–860 MPa (316L grade), ideal for marine and chemical applications due to their 2–3% molybdenum content, which resists chloride-induced pitting. For high-stress 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 stainless steel clamp on rod holders, cold-drawn 316L rods exhibit 30% higher bend resistance than annealed grades, critical for marine and automotive suspensions. The stainless steel all thread rod (17-4 PH) maintains bend strength up to 430 MPa, preventing deformation in seismic zones or heavy-load applications.

Identification & Marking

Stainless steel rods are labeled per global standards for traceability:

• ASTM A276: Specifies chemical compositions (e.g., 316L: 16–18% Cr, 10–14% Ni, 2–3% Mo).
• ISO 15510: Ensures compliance for marine and medical-grade 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 stainless steel all thread rod (M20):
Weight ≈ 2.47 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:

1. Chloride Exposure: Saltwater or de-icing salts degrade passive layers. 316L rods with molybdenum mitigate pitting in marine applications like stainless steel clamp on rod holders.
2. Galvanic Corrosion: Contact with carbon steel accelerates oxidation. Use stainless steel 316 welding rods (ER316L) and insulate joints with dielectric coatings.
3. Mechanical Damage: Scratches expose iron. Passivate surfaces with nitric acid post-fabrication to restore chromium oxide layers.
4. 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 Rod Kits

1. Certified Quality: ISO 9001 and ASTM-compliant production with third-party SGS/BV inspections.
2. Precision Customization: Tailor stainless steel all thread rod, clamp on rod holders, or welding bundles to exact dimensions (±0.1mm tolerance).
3. Fast Delivery: 15–30-day lead time via DHL/FedEx global logistics.
4. Sustainability: 100% recyclable alloys; nitrogen-enhanced grades reduce nickel consumption by 20%.
5. Technical Support: Expert guidance on welding parameters (e.g., ER316L preheat: 150–200°C) and corrosion prevention.