P540 Non Magnetic Drill Collar

• Warranty: Technical/Sample/Quality
• Manufacturing Process: Forging
• Surface Treatment: Painted
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Transport Package: Standard
• Model NO.: P540
• Specification: 3 1/8" - 11"
• Trademark: SHUNFU
• Origin: China
• HS Code: 8431431000
• Production Capacity: 100000 Tons Per Year

Product Description

P540 Non Magnetic Drill Collar

One of the main strengths of ShunFu is the ability to be a single source manufacturer of special Non Magnetic collars. Only those products which successfully pass our rigorous inspection controls are allowed to leave our factory. From the sourcing of materials to the final quality control all ShunFu manufactured products pass through our precision machining production steps including BTA boring, CNC lathe and milling, roller burnishing, shot peening, long distance gunhole-drilling and laser cladding at a 6-axis machine.

The reputation of ShunFu in the manufacture and supply of Non Magnetic drill string components is based upon extensive in-house experience both in metallurgy and precision manufacturing. ShunFu has always been the leader in the development of Non Magnetic materials, special manufacturing processes and testing procedures such as hammer peening and hot-spot testing.

Being specifically focused on the manufacturing of nonmagnetic drill string components makes ShunFu a leader in complex precision machining and service at the highest of standards.

Drill Collars are made from high purity
austenitic stainless steel.
Low & High Yield Material available
Advanced chemical composition control system and special forging process guarantee the excellent mechanical properties, corrosion
resistant performance and high fatigue resistance of our Non- Magnetic material.
Shoot Peening on Connections.
 

Chemical Composition

P540 is a special non-mag, austenitic Mn-Cr-N-steel with a Nickel-content of < 2 %

Element	P540
Carbon	max. 0.05
Manganese	19.00-21.00
Chromium	17.00-19.50
Molyddenum	0.30-0.80
Nitrogen	min. 0.50
Nickel	0.8-2.0

 

Mechanical Properties

Following mechanical properties (tested at room temperature) are achieved by a special cold-working process over the full length of the collar:

Yield Strength (min.): OD up to 9 1/4"	120 ksi	830 N/mm^2
0,2%-offset method    OD 9 1/2" and larger	110 ksi	760 N/mm^2
Tensile Strength   (min.):	130 ksi	900 N/mm^2
Elongation        (min.):	25%	25%
Reduction of area  (min.):	50%	50%
Impact energy     (min.):	90 ft.lb	122 J
Endurance Strength / N=10^5(min.):	+/- 65 ksi	+/- 455 N/mm^2
Hardness Brinell:	285-400 HB	285-400 HB

 

Magnetic Properties

Relative permeability: < 1,005.
 

Corrosion Resistance

Transgranular SCC: Prevented by special surface treatments (Hammer peening, roller burnishing, shot peening).

Intergranular SCC: The occurrence of material sensitization is prevented by quenching after warm-forging. Each collar is tested acc. to ASTM A 262, Pract. A and E, last edition.

Pitting Corrosion: Due to high chromium- , nickel- and nitrogen contents an excellent resistance to pitting corrosion comparable to nickelbase alloys is given.
 

Non-Destructive testing

Magnetic inspection: Drill collars are 100% tested by a proprietary probe-testing process using a Forster Magnetomat 1.782. ("Hot Spot"-test). Magnetic permeability of each collar is certified with the printout of probe-testing.

Ultrasonic inspection: Each collar is ultrasonically inspected over 100% of the volume according to ASTM E 114, last edition as a minimum level.

P540 Non-Mag Drill Collars meet all requirements of API Spec. 7.1, last editions. All tests are carried out according to ASTM-Standards, last editions.
 

Our Services

Being specifically focused on the manufacturing of nonmagnetic drill string components makes ShunFu a leader in complex precision machining and service at the highest of standards.

Technical Assistance
Technical assistance in the manufacturability and design of complex collars machined.

Warehousing
Stocking and sales of standard high strength API Spec 7 nonmagnetic drill collars.

Custom Cutting
Stocking and sales of solid P530, P550, P580 and P750 NM material cut to length at customer request.
 

Quality Assurance System

All ShunFu products are manufactured under the full control of a Quality Assurance System which is continually audited and complies with ISO 9001. ShunFu has a state-of-the-art laboratory in which all the testing of materials is carried out. ShunFu has extensive additional facilities that guarantee that products are of the highest quality.