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Data sheet P 530

Revision 12

1. CHEMICAL COMPOSITION

„P530“ is a special nonmagnetic, austenitic Mn-Cr-N-steel with a Nickel-content of ≤ 2%.

CMnCrMoNNi
max. 0,0518,50 - 20,00 13,00 - 14,00 0,40 - 0,600,25 - 0,40max. 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:

textodksiN/mm
Yield Strength (min.) 0,2%-offset method:OD less than 4“120 ksi830 N/mm²
OD 4“ to 91/4“ 110 ksi760 N/mm²
OD 91/2“ and larger100 ksi690 N/mm²
Tensile StrengthOD less than 4“130 ksi900 N/mm²
OD 4“ and larger120 ksi830 N/mm²
Elongation (min.):25%25%
Reduction of area (min.):50%50%
Impact energy (min.):90 ft.lb122 J
Hardness Brinell: (min.):260-350 HB 260-350 HB

3. MAGNETIC PROPERTIES

Relative permeability: ≤ 1,001.

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.

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.

6. GALLING RESISTANCE
„P530“ is due to the chemical composition and the special coldworking process less susceptible to galling than Cr-Ni steels.

Non-Magnetic material optimized for MWD-collars and stabilizers (higher strength and endurance) is available on special request.
P530-Non-Magnetic Drill Collars meet all requirements of API Spec. 7.1, last edition.
All tests are carried out according to ASTM-Standards, last editions.
Prepared / released: B. Holper

Date: June, 2013