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Non magnetic bar P530

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

Product Introduction

1. CHEMICAL COMPOSITION

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

CMnCrMoNNi
max. 0,0518,50 – 20,0013,00 – 14,000,40 – 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.):
0.250.25
Reduction of area (min.):
0.50.5
Impact energy (min.):
90 ft.lb122 J
Hardness Brinell: (min.):
260-350 HB260-350 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 cold working process less susceptible to galling than Cr-Ni steels.

 

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 JointOD INCHBore d
in
+ 1/16
-0
Length
ft
+6
-0
Bevel Diameter
in
±1/64 in
BSR
NC23-313 1/81 1/43032.57:1
NC26-353 1/21 1/2303 17/642.42:1
NC35-414 1/8230 or 313 61/642.43:1
NC35-474 3/4230 or 314 33/642.58:1
NC38-5052 1/430 or 314 49/642.38:1
NC44-6062 1/430 or 315 11/162.49:1
NC44-6062 13/1630 or 315 11/162.84:1
NC44-626 1/42 1/430 or 315 7/82.91:1
NC46-626 1/42 13/1630 or 315 29/322.63:1
NC46-656 1/22 1/430 or 316  3/322.76:1
NC46-656 1/22 13/1630 or 316  3/323.05:1
NC46-676 3/42 1/430 or 316  9/323.18:1
NC50-7072 1/430 or 316 31/642.54:1
NC50-7072 13/1630 or 316 31/642.27:1
NC50-727 1/42 13/1630 or 316 43/643.12:1
NC56-777 3/42 13/1630 or 317 19/642.70:1
NC56-8082 13/1630 or 317 31/643.02:1
6 5/8 REG8 1/42 13/1630 or 317 45/642.93:1
NC61-9092 13/1630 or 318 3/83.17:1
7 5/8 REG9 1/2330 or 318 13/162.81:1
NC70-979 3/4330 or 319  5/322.57:1
NC70-10010330 or 319 11/322.81:1
8 5/8 REG11330 or 3110 1/22.84:1