Ultraband - Model NM -Non-Mag Drill Collars

Why is Ultraband™NM better than conventional non-magnetic alloys? Control of critical elements has resulted in a hardband alloy that meets magnetic permeability specifications and offers a 400% to 500% improvement in wear resistance compared to non-mag welding alloys such as 310 stainless and conventional drill collar base materials. Advantages of Ultraband™NM include:

• Able to use on non-mag base materials such as P530, AG17, 15-15LC, NMS-100 and others.
• Meets all requirements of API Specification 7 with a relative permeability of less than 1.01. Tests are carried out per ASTM A342 Method 3.
• It can be applied in multiple layers without spalling providing the interpass temperatures are properly controlled.
• Non-Cracking with a hardness of 40 Re.

Ultraband™NM is optimized for improved wear resistance in oil and gas industry applications such as non–magnetic drill collars, stabilizers and MWD/LWD drilling tools and related components. Ultraband™NM can be applied directly on to non-mag tools and over previous layers of 310 stainless. Used by itself, Ultraband™NM provides excellent wear resistance.

For additional wear protection. a non-magnetic “cast tungsten carbide” may be dropped into the weld. Recommended size is 20-30 or 30-40 mesh at a drop rate of approximately 40 grams per minute. Deposits are smooth and free of any slag. Re-application is easy providing the worn deposit is clean and free of defects. Please contact our Engineering Department for complete procedures.