ASTM B462 Alloy Al6XN, UNS N08367 WNRF Nickel Alloy Steel Flanges CL3000 for Oil and Gas

ASTM A462 Alloy Al6XN / UNS N08367 WN RF Mechanical Nickel Alloy Steel Flanges

ASTM A462 specifies high-performance alloy steel flanges, including the Al6XN alloy (UNS N08367). Al6XN is a super-austenitic stainless steel known for its excellent corrosion resistance, particularly in chloride-rich environments. These flanges are designed with a weld neck raised face (WN RF), ensuring a robust and leak-proof connection in various piping systems.

UNS N08367 also commonly referred to as alloy AL6XN® is a low carbon, high purity, nitrogen-bearing "super-austenitic" nickel-molybdenum alloy with excellent resistance to chloride pitting and crevice corrosion. Alloy AL6XN’s high strength and corrosion resistance makes it a better choice than the conventional duplex stainless steels and a cost effective alternative to more expensive nickel-base alloys where excellent formability, weldability, strength and corrosion resistance are essential.

Beneficial features, some of which include

• Excellent resistance to pitting and crevice corrosion in chloride solutions

• Practical immunity to stress corrosion cracking in NaCl environments
• High strength and toughness
• 50% stronger than stainless steel
• ASME coverage up to 800° F
• Easily welded

Flanges Types

• Slip On - SORF Flanges
• Weld Neck - WNRF Flanges
• Socket Weld - SWRF Flanges
• Blind - BLRF Flanges
• Lapped Joint Flanges
• Screwed Flanges
• Long Weld Neck Flanges
• Reducing Flanges
• Spectacle Flanges
• Ring Joint Flanges

FLANGES STANDARD

• ASTM FLANGES
• BS FLANGES
• DIN FLANGES
• IS FLANGES

Product Range

WNRF Flanges Size : 1/8" NB TO 48"NB.

WNRF Flanges Class : 150#, 300#,400 #,600#,900#, 1500# & 2500 #.

Application

Superior Corrosion Resistance: Al6XN offers exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in saline and chloride-rich environments.
High Strength and Toughness: The alloy maintains high mechanical strength and toughness, even at elevated temperatures and pressures.
Versatile and Durable: Suitable for use in a wide range of applications due to its durability and resistance to corrosion and wear.
Ease of Fabrication: Al6XN can be easily welded and fabricated, making it an ideal choice for complex and high-integrity piping systems.
Cost-Effective: While initially more expensive, the long service life and reduced maintenance costs make it a cost-effective solution over time.

NO8367 Stainless Steel Alloy Applications

Alloy AL6XN is used for a wide range of applications, including:

1. Seawater Heat Exchangers

2. Offshore Oil & Gas Rigs
3. FGD Scrubbers
4. Reverse Osmosis Equipment
5. Distillation Columns