P540 Nonmagnetic 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.: P540
• Surface Treatment: Polished
• Alloy: Nonmagnetic Steel
• Special Use: Oil Equipment
• Transport Package: Wooden Case
• Specification: max 1500mm diameter
• Trademark: SHUNFU
• Origin: China

Product Description

P540 Nonmagnetic Steel

 

1. CHEMICAL COMPOSITION

P540 is a special nonmagnetic, austenitic Mn-Cr-N-steel with a nitrogen content of ≤ 2%.

C	Mn	Cr	Mo	N	Ni
max. 0,05	19,00 - 21,00	17,00 - 19,50	0,30 - 0,80	min. 0,50	0,80 - 2,00

 

2. MECHANICAL PROPERTIES

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

TEXT	OD	KSI	N/MM
Yield Strength (min.) 0,2%-offset method:	OD up to 9 1/4"	120 ksi	830 N/mm²
	OD 9 1/2" and larger	110 ksi	760 N/mm²
Tensile Strength (min.):		130 ksi	900 N/mm²
Elongation (min.):		0.2	0.2
Reduction of area (min.):		0.5	0.5
Impact energy (min.):		90 ft.lb	122 J
Endurance Strength / N=10 (min.):		± 65 ksi	± 455 N/mm²
Hardness Brinell: (min.):		285-400 HB	285-400 HB

 

3. MAGNETIC PROPERTIES

Relative permeability: ≤ 1,005.
 

4. 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 warmforging. Each collar is tested according to ASTM A 262, Pract.A and E, last edition.
• Pitting Corrosion: Due to a high chromium- and nitrogen content a high resistance to pitting corrosion is given.
 

5. NON-DESTRUCTIVE TESTING

• Magnetic inspection: Drill collars are 100% tested by a proprietary probe-testing process using a Förster 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.

The Non-magnetic drill collar is made of a kind of low carbon high chrome-manganese alloy steel, material normally is P530 or P550 or higher grades, which is refined after strict chemical composition ratio and forged to achieve its mechanical properties, this kind of drill collar has superb mechanical properties of low permeability and high strength. Mainly used for down hole directional drilling.
 

Tool Joint	OD INCH	Bore d in + 1/16 -0	Length ft +6 -0	Bevel Diameter in ±1/64 in	BSR
NC23-31	3 1/8	1 1/4	30	3	2.57:1
NC26-35	3 1/2	1 1/2	30	3 17/64	2.42:1
NC35-41	4 1/8	2	30 or 31	3 61/64	2.43:1
NC35-47	4 3/4	2	30 or 31	4 33/64	2.58:1
NC38-50	5	2 1/4	30 or 31	4 49/64	2.38:1
NC44-60	6	2 1/4	30 or 31	5 11/16	2.49:1
NC44-60	6	2 13/16	30 or 31	5 11/16	2.84:1
NC44-62	6 1/4	2 1/4	30 or 31	5 7/8	2.91:1
NC46-62	6 1/4	2 13/16	30 or 31	5 29/32	2.63:1
NC46-65	6 1/2	2 1/4	30 or 31	6  3/32	2.76:1
NC46-65	6 1/2	2 13/16	30 or 31	6  3/32	3.05:1
NC46-67	6 3/4	2 1/4	30 or 31	6  9/32	3.18:1
NC50-70	7	2 1/4	30 or 31	6 31/64	2.54:1
NC50-70	7	2 13/16	30 or 31	6 31/64	2.27:1
NC50-72	7 1/4	2 13/16	30 or 31	6 43/64	3.12:1
NC56-77	7 3/4	2 13/16	30 or 31	7 19/64	2.70:1
NC56-80	8	2 13/16	30 or 31	7 31/64	3.02:1
6 5/8 REG	8 1/4	2 13/16	30 or 31	7 45/64	2.93:1
NC61-90	9	2 13/16	30 or 31	8 3/8	3.17:1
7 5/8 REG	9 1/2	3	30 or 31	8 13/16	2.81:1
NC70-97	9 3/4	3	30 or 31	9  5/32	2.57:1
NC70-100	10	3	30 or 31	9 11/32	2.81:1
8 5/8 REG	11	3	30 or 31	10 1/2	2.84:1