STAINLESS STEEL 347/347H FASTENERS 🔥

When durability meets extreme conditions, Stainless Steel 347/347H fasteners become the go-to choice for engineers and industries worldwide. Designed to handle high temperatures and resist corrosion, these fasteners offer a perfect balance of strength, stability, and long-term performance. 💪✨

Let’s explore what makes them so special and why they’re widely trusted across demanding industries.

🔍 What Are Stainless Steel 347 Fasteners?

Stainless Steel 347 fasteners are made from an austenitic stainless steel grade stabilized with niobium (columbium). This added element helps prevent chromium carbide formation, making the material highly resistant to intergranular corrosion. 🛡️

👉 Common fastener types:

  • Bolts 🔩
  • Nuts 🔩
  • Screws 🪛
  • Washers ⚙️

These fasteners are especially useful in environments where heat and corrosion are major concerns.

⚖️ Difference Between 347 & 347H

Understanding the difference between these two grades helps you pick the right one for your application.

🔹 Stainless Steel 347

  • Standard carbon content
  • Excellent corrosion resistance
  • Suitable for moderate to high temperatures

👉 Best for: General industrial and chemical processing applications

🔹 Stainless Steel 347H (High Carbon) 🔥

  • Higher carbon content than 347
  • Improved high-temperature strength
  • Better creep resistance

👉 Best for: High-heat environments like boilers, heat exchangers, and pressure vessels

💡 Why Choose 347/347H Fasteners?

Here’s why these fasteners are highly preferred:

✔️ Excellent High-Temperature Resistance 🔥
✔️ Superior Corrosion Protection 🛡️
✔️ Prevents Intergranular Corrosion
✔️ Strong & Durable Performance 💪
✔️ Low Maintenance & Long Life ⏳

These features make them ideal for critical applications where failure is not an option.

🏭 Applications of Stainless Steel 347/347H Fasteners

These fasteners are widely used in industries that operate under extreme conditions:

  • Petrochemical Industry 🧪
  • Oil & Gas ⛽
  • Power Generation ⚡
  • Aerospace ✈️
  • Heat Exchangers & Boilers 🔥
  • Chemical Processing Plants 🏭

Their ability to withstand both heat and corrosion makes them a trusted choice for heavy-duty operations.

🛠️ Tips for Choosing the Right Fastener

Before selecting your fasteners, consider these important points:

🔸 Use 347 for general high-temperature applications
🔸 Choose 347H for continuous exposure to extreme heat
🔸 Ensure compliance with standards like ASTM, DIN, or ISO 📏
🔸 Always check load and environmental conditions before selection


Location: Prasad Chambers, Tata Rd No 2, Charni Road East, Opera House, Girgaon, Mumbai, Maharashtra 400004, India

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