Premium Stainless Steel Welding Rod | 30mm 304/316L Solid Bar

Premium Stainless Steel Welding Rod | 30mm 304/316L Solid Bar

High-Performance Welding Solutions for Industrial Excellence

Technical Specifications

Key Attributes

1. Corrosion Resistance

   • The stainless steel welding rod contains molybdenum (2-3%) for enhanced resistance to chlorides, acids, and alkalis, making it ideal for marine, chemical, and cryogenic applications.
   • 316L grade ensures minimal carbide precipitation during welding, preventing intergranular corrosion.

2. Durability & Strength

   • Tensile Strength (80,000 psi) and Yield Strength (35,000 psi) exceed industry standards for high-stress environments like pipelines and structural frameworks.
   • Elongation (60%) allows flexibility without fracture, critical for dynamic load-bearing applications.

3. Surface Versatility

   • Bright (8K mirror) finish for aesthetic applications (e.g., architectural trim).
   • Mill finish for industrial welding where surface polish is secondary.

Performance Details

Tensile Strength

The stainless steel filler rod achieves 80,000 psi tensile strength, outperforming standard 304-grade rods (75,000 psi). This is due to its optimized austenitic microstructure and controlled carbon content (≤0.03% for 316L), ensuring weld integrity under extreme temperatures and pressures.

Bend Strength

With a 28 ksi elasticity modulus, the rod withstands repetitive bending without microfractures. This is critical for applications like HVAC ducting and automotive exhaust systems.

Weight Calculation

• Formula: Weight (kg) = (Diameter² × Length × Density) / 162
  • Density of 316L: 8.0 g/cm³
  • Example: 30mm × 6FT rod ≈ 10.6 kg

Identification & Marking

• Laser-etched grade identifiers (e.g., "316L") on each rod.
• Complies with AWS A5.9/ASME SFA 5.9 standards for traceability.

Why Stainless Steel Rusts?

While stainless steel stick welding rod is inherently rust-resistant, improper handling or environments can cause localized corrosion:

• Chloride Exposure: Coastal or de-icing salt environments may induce pitting corrosion.
• High-Temperature Oxidation: Prolonged exposure above 800°F (427°C) degrades the passive chromium oxide layer.
• Mechanical Damage: Scratches or weld spatter disrupt the protective film, requiring post-weld passivation.

Manufacturing Process

1. Vacuum Induction Melting (VIM): Ensures low impurity levels (O₂ ≤30ppm, N₂ ≤150ppm).
2. Hot Rolling & Cold Drawing: Precision diameter control (±0.1mm) for consistent weld pool flow.
3. Solution Annealing: Heated to 1900°F (1038°C) and water-quenched to stabilize austenitic structure.
4. Surface Polishing: Electrolytic polishing for 8K mirror finish or abrasive belts for mill finish.

Applications

• Oil & Gas: Pipeline welding, valve repairs (resists H₂S and CO₂ corrosion).
• Pharmaceuticals: Sanitary joints meeting FDA/ISO cleanability standards.
• Aerospace: High-strength welds for turbine components.

Why Choose Our Stainless Steel Welding Rods?

1. Superior Quality Control
   • PMI (Positive Material Identification) and spectrographic testing ensure 100% grade accuracy.
2. Custom Solutions
   • Tailored diameters (10-250mm), lengths, and certifications (ISO, PED, NACE).
3. Competitive Pricing
   • Direct factory pricing with 30% cost savings versus branded alternatives.
4. Global Compliance
   • Meets ASTM, EN, JIS, and GB standards for international projects.
5. Fast Turnaround
   • 72-hour dispatch for standard sizes, supported by global logistics partners.