Understanding ASTM B366 UNS N06625 and ASTM A350 LF2: Materials for High-Performance Piping Solutions

In piping systems for oil and gas, chemical, and offshore applications, material selection is critical for ensuring safety and performance. Haihao Group recently supplied a range of products made from ASTM B366 UNS N06625 and ASTM A350 GR. LF2 CL1 to a Singapore client. Here’s a closer look at why these materials are chosen for demanding environments.

ASTM B366 UNS N06625 and ASTM A350 GR. LF2 CL1 pipeline products

ASTM B366 UNS N06625 and ASTM A350 GR. LF2 CL1 pipeline products

What is ASTM B366 UNS N06625?

ASTM B366 UNS N06625 is a Nickel-Chromium-Molybdenum alloy known for:

  • Outstanding corrosion resistance
  • High strength across a wide temperature range
  • Excellent weldability

It is particularly resistant to pitting, crevice corrosion, and chloride-induced stress corrosion cracking, making it ideal for marine, chemical processing, and oil & gas applications.

ASME B16.11 ASTM A350 Gr LF2 Cl 1 socket weld tees

ASME B16.11 ASTM A350 Gr LF2 Cl 1 socket weld tees

What is ASTM A350 LF2 CL1?

ASTM A350 LF2 Class 1 is a carbon steel material designed for low-temperature applications. It features:

  • High impact toughness at temperatures as low as -46°C
  • Good machinability and weldability
  • Strong mechanical properties suitable for flanges, fittings, and valves
  • Compliance with NACE MR0175/ISO 15156

Both materials provided by Haihao Group comply with NACE MR0175/ISO 15156, meaning they are suitable for use in sour gas environments without risk of sulfide stress cracking.

Certified Quality Assurance

Haihao Group ensures that each product comes with:

  • EN 10204 3.1 certified MTC
  • Heat treatment and cooling medium documentation
  • Hardness and ultrasonic testing reports

Choosing the right material is vital for system reliability and safety. Haihao Group’s expertise in material selection and stringent quality control processes make us a trusted supplier of high-specification piping components worldwide.

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