manufacturer of tool steel, stainless steel, nickel alloy, alloy steel

P750 Nonmagnetic Steel

P750 Nonmagnetic Steel

P750 Nonmagnetic Steel 2

P750 Nonmagnetic Steel 2

We produce P750 non-mag material Steel Bars and Non Magnetic Hollow Bars.

 

1. CHEMICAL COMPOSITION

P750 is a high pitting corrosion resistant nonmagnetic, austenitic Cr-Ni-N-steel, specifically developed for oilfield applications.

C Mn Cr Mo N Ni
max. 0,03 1,50 – 3,00 26,50 – 29,50 2,00 – 4,00 min. 0,20 28,00 – 31,50

 

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“ 140 ksi 965 N/mm²
OD 9 1/2“ and larger 130 ksi 900 N/mm²
Tensile Strength (min.): 150 ksi 1035 N/mm²
Elongation (min.): 17% 17%
Reduction of area (min.): 50% 50%
Impact energy (min.): 100 ft.lb 135 J
Endurance Strength / N=10⁵ (min.): ± 80 ksi ± 550 N/mm²
Hardness Brinell: (min.): 300-400 HB 300-400 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 warm forging. Each collar is tested according to ASTM A 262, Prat.A and E, last edition.
  • Pitting Corrosion:Due to a high chromium-, nickel- and nitrogen contents a excellent resistance to pitting corrosion comparable to nickelbase alloys is given.

 

5. NON-DESTRUCTIVE TESTING

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

 

About Us

Founded in 1998, FuShun covers an area of 3000 square meters, annual sales volume of 20000 tons. We are engaged in the manufacture and export of Tool Steel, Nickel Alloy, Stainless Steel and other special steel products…,View more content About Me.

Contact Lists

General Manager: Ms. Florence

info@fushunspecialsteel.com

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Fushun TEL: +86-731-89903933

Fushun FAX: +86-731-89853933

General Manager: Ms. Florence Tang

Whatsapp/Phone/WeChat:+86-13319591838

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NOW Send Your Inquiry To : info@fushunspecialsteel.com

Whatsapp:+86-18692275455

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