Data sheet P 690

Revision 0 Preliminary

1. CHEMICAL COMPOSITION

„P690“ is a high pitting corrosion resistant nonmagnetic, austenitic Cr-Ni-Mo-N-steel, specifically developed for oilfield applications.

CMnCrMoNNi
max. 0,053,00 - 8,0022,00 - 28,003,00 - 5,00min. 0,4014,00 - 5,00

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 up to 9 1/4“150 ksi1035 N/mm²
OD 9 1/2“ and larger140 ksi965 N/mm²
Tensile Strength (min.):160 ksi1104 N/mm²
Elongation (min.):20%20%
Reduction of area (min.):50%50%
Impact energy (min.):120 ft.lb162 J
Endurance Strength / N=10⁵ (min.):± 90 ksi± 550 N/mm²
Hardness Brinell: (min.):350-450 HB350-450 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. – Pitting Corrosion: Due to the high chromium-, nickel- molybdenum and nitrogen cont and the unique forging process an excellent 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.

P690 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: Nov., 2018