AMS 5582 UNS N07750 Inconel X750 Nickel Alloy Seamless Tube & Pipe

• Product Overview

AMS 5582 (UNS N07750 / W.Nr. 2.4669 / Inconel X-750) specifies precipitation-hardenable nickel-chromium superalloy seamless tubes and pipes engineered for critical high-stress, high-temperature, and corrosive service up to 1300 deg F (700 deg C). Hardened by the addition of titanium and aluminum, Inconel X-750 tubing offers outstanding creep-rupture strength, high fatigue resistance, and excellent relaxation resistance under thermal cycling.

Changzhou DLX Alloy Co., Ltd. specializes in manufacturing high-precision Inconel X-750 seamless tubes, capillary tubing, heat exchanger pipes, and hydraulic lines with tight dimensional tolerances, customized age-hardened tempers, and 100 percent non-destructive testing (EN 10204 3.1 certified).

Key Performance Advantages

• High-Temperature Mechanical Integrity: Maintains exceptional yield strength and creep-rupture performance under elevated pressure up to 700 deg C (1300 deg F).
• Stress Corrosion Cracking Resistance: Outstanding resistance to chloride-ion stress-corrosion cracking (SCC) and oxidation in both oxidizing and reducing media up to 980 deg C (1800 deg F).
• Precision Dimensional Stability: Low thermal expansion coefficient and high elastic modulus ensure dimensional stability in high-pressure hydraulic and instrumentation tubing.
• Non-Magnetic and Cryogenic Toughness: Fully non-magnetic (permeability below 1.002) with superior ductility and impact toughness at cryogenic temperatures down to -253 deg C (-423 deg F).

• Chemical Properties of Inconel X750

• Typical Industrial Applications

• Aerospace & Jet Engines: Rocket engine fuel thrust chambers, turbine exhaust piping, hydraulic and fuel lines, afterburner instrumentation lines.
• Power Generation & Nuclear Reactors: Nuclear fuel element control rod tubing, steam generator superheater tubing, high-pressure steam valve sleeves.
• Chemical & Petrochemical: High-temperature heat exchangers, autoclave piping, corrosive gas sampling tubes, catalyst recovery systems.
•  Instrumentation & Sensors: Thermocouple protection sheaths, pressure sensor capillary tubes, Bourdon tubes, and high-pressure expansion bellows.

• Tube Specifications And Manufacturing Capabilities

  Cold Drawn Seamless Tubing

  • Outer Diameter (OD): 3.18 mm to 114.3 mm (1/8 inch to 4.5 inch)
  • Wall Thickness (WT): 0.38 mm to 12.7 mm (0.015 inch to 0.500 inch)
  • Straight Lengths: Up to 12 meters, or coiled tubing up to 1000 meters

  Precision Capillary & Miniature Tubing

  • Outer Diameter (OD): 0.50 mm to 6.35 mm (0.020 inch to 0.250 inch)
  • Wall Thickness (WT): 0.08 mm to 1.0 mm (0.003 inch to 0.040 inch)

  Surface Quality & Finish

  • Internal/External Finish: Bright Annealed (BA Ra below 0.4 um), Pickled (AP), Mechanical Polished (180, 320, 400, 600 grit)

     Physical And Thermal Properties

  Property	Metric Value	Imperial Value
  Density	8.28 g/cm³	0.299 lb/in³
  Melting Range	1390°C - 1430°C	2540°F - 2600°F
  Curie Temperature	-125°C	-193°F
  Magnetic Permeability (20°C, 200 Oe)	1.002	Non-magnetic
  Thermal Conductivity (20°C)	12.0 W/m·K	83.2 Btu·in/ft²·h·°F
  Specific Heat Capacity (20°C)	431 J/kg·K	0.103 Btu/lb·°F
  Coefficient of Thermal Expansion (20-100°C)	12.6 µm/m·°C	7.0 µin/in·°F
  Modulus of Elasticity (20°C)	214 GPa	31.0 x 10³ ksi

  Mechanical Properties

  Heat Treatment Condition	Tensile Strength Rm	Yield Strength 0.2% Offset	Elongation A50mm	Hardness	Typical Application
  Solution Annealed	≤ 965 MPa (140 ksi)	≤ 550 MPa (80 ksi)	≥ 30%	≤ 25 HRC / ≤ 260 HB	Ready for Bending, Coiling & Cold Forming
  Precipitation Age-Hardened	≥ 1172 MPa (170 ksi)	≥ 793 MPa (115 ksi)	≥ 15%	≥ 30 HRC / ≥ 290 HB	High Pressure, Creep & Fatigue Service

  Tube Heat Treatment Procedures

  • Solution Annealing: 1800 deg F - 1900 deg F (982 deg C - 1038 deg C), hold for 15 to 30 minutes, followed by rapid cooling in inert atmosphere or water quench.
  • Standard Tube Dual Aging (AMS 5582):
  • Intermediate Heat Treatment: 1550 deg F +/- 25 deg F (843 deg C +/- 14 deg C) for 24 hours, air cool.
  • Final Aging: 1300 deg F +/- 25 deg F (704 deg C +/- 14 deg C) for 20 hours, air cool.

     Quality Control, Non-Destructive Testing & Packaging

   DLX maintains comprehensive in-house metallurgical and non-destructive testing for all Inconel X-750 tubes. Every shipment is delivered with an EN 10204 3.1 Mill Test Certificate covering:

  • 100% Positive Material Identification (PMI Spectrometric Testing)
  • 100% Non-destructive Eddy Current Testing or Hydrostatic Pressure Testing (up to 50 MPa)
  • Microstructure evaluation, grain size verification, and flaring/flattening mechanical tests
  • Ultrasonic Testing (UT) for heavy-wall pipes upon request
  • Cleanliness: Degreased, dried, with end caps attached to protect internal tube bores from contamination during transit

  

  FAQ

  Q1: Can DLX Inconel X-750 tubing be bent and flared without cracking?

  A1: Yes. When delivered in the Solution Annealed condition (AMS 5582), the tubing has high ductility (elongation 30 percent or higher) and can be easily bent, coiled, and flared. Final precipitation aging can be performed after forming to achieve maximum strength.

  Q2: What non-destructive tests (NDT) are conducted on seamless Inconel X-750 tubes?

  A2: Standard production includes 100 percent Eddy Current testing to verify surface and sub-surface integrity. For high-pressure boiler or nuclear applications, we offer hydrostatic pressure testing and ultrasonic flaw detection.

  Q3: What is the MOQ and delivery lead time for custom Inconel X-750 tube sizes?

  A3: The standard production MOQ is 5 kg. Standard stocked capillary and hydraulic sizes ship within 3 to 7 business days. Custom OD, wall thickness, or cut-to-length orders ship within 10 to 25 business days.