Twz-2 Non-Magnetic Steel Round Bar

• After-sales Service: Technical/Sample/Quality
• Warranty: Technical/Sample/Quality
• Type: Nonmagnetic Steel
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Rolled or Forged
• Application: Oil Field
• Model NO.: TWZ-2
• Surface Treatment: Polished
• Alloy: Nonmagnetic Steel
• Special Use: Oil Equipment
• Transport Package: Wooden Case
• Specification: max 1500mm diameter
• Trademark: SHUNFU
• Origin: China

Product Description

TWZ-2 Non-magnetic Steel

Forged steel for non-magnetic drill collars with a yield strength of 110 KSI
 

Chemical Component

Grade	C	Si	Mn	P	S	Cr	Mo	Ni	Cu	N	B
TWZ-2	≤ 0.04	≤ 1.00	17.50- 23.50	≤ 0.040	≤ 0.010	16.00- 18.50	0.40- 0.80	≥ 0.50	≤ 0.60	≥ 0.48	≤ 0.0050

 

Mechanical property

Diameter /mm	RP0.2 /MPa	Rm /MPa	A /%	AkV /J	HBW
≤190	≥758	≥827	≥18	≥100	≥285
>190-280	≥689	≥758	≥20		≥265

 

Magnetic properties

When the magnetic field strength is 1×105/4π A/m, the relative permeability μr is tested and determined as follows according to whether or not the user requires a magnetic gradient. (Special instructions must be given at the time of ordering; if no special instructions are given, it is deemed that there is no requirement for magnetic gradient). 1) No requirement for magnetic gradient: 2pcs/batch, each analyzing 1 magnetic permeability performance, the sampling part is 25.4mm from the surface (recorded as μr (25.4)), μr (25.4) ≤1.008. 2) Requirement for magnetic gradient (magnetic gradient ≤0.05μT): Applicable forging material specification range φ80-280mm.


Non-magnetic steel is a type of steel that does not have magnetic properties. It is used in the oil and gas industry for various applications that require a non-magnetic material. For example, non-magnetic steel is used for drilling and logging operations, as it does not interfere with the magnetic sensors and measurements. Non-magnetic steel is also used for reactor nozzles, bed supports, catalyst screens, thermowells, and gasketing in the oil and gas industry. Non-magnetic steel is usually made of austenitic stainless steel, which has a high chromium and nickel content that prevents the formation of magnetic domains in the metal's structure. Non-magnetic steel has high strength, corrosion resistance, and durability, making it suitable for harsh environments.