Monel K500 Seamless Tube

Monel K500 Seamless Tube – High-Strength Corrosion-Resistant Piping Solution

TSM Technology specialises in the production of high quality Monel K500 Seamless Tube with excellent mechanical strength and corrosion resistance for demanding industrial applications. Our tubes have a yield strength of more than 110,000 psi (760 MPa), which is three times that of Monel 400. They also have seamless integrity, which reduces the possibility of weld failure. With more than 100 pieces of precise equipment and a monthly production capacity of 100–200 tonnes in our 50,000 square foot facility, we guarantee tight tolerances and reliable quality. Each tube is put through a rigorous testing process that includes NDT inspection, hydrostatic testing, and PMI. With ISO 9001 and AS9100D certifications, as well as NACE MR0175 compliance for sour gas service, we provide custom diameters ranging from OD 6 to 219 mm.

What is Monel K500 Seamless Tube?

A high-performance nickel-copper alloy plumbing system for locations where material failure is not an option. The combination of high strength and outstanding corrosion resistance is achieved by regulated age-hardening operations with additions of aluminium and titanium.

The continuous process removes the longitudinal weld failure and heat-impacted zone susceptibilities of welded alternatives.

This tube solves three critical challenges you face:

• Sour gas stress corrosion cracking
• Mechanical failure in deep-sea applications at excessive hydrostatic pressures
• Non-Magnetic Component Requirements for Precise Instrumentation

And the seamless design keeps the structure intact even under the most trying situations.

Specification

Physical and Chemical Properties

Product Standards

Our product strictly adheres to international standards:

• ASTM B163 – Seamless nickel and nickel alloy condenser and heat exchanger tubes
• ASTM B165 – Nickel-copper alloy seamless pipe and tube
• ASTM B829 – Specification for age-hardening treatment
• ASME SB165 – Pressure piping applications
• NACE MR0175 – Sour gas service compliance
• JIS, DIN – International market requirements

All products come with full material traceability documentation (MTC, ITP, QAC).

What are the Features of Monel K500 Seamless Tube?

1. Superior Mechanical Strength

Age-hardening treatment delivers yield strength three times greater than Monel 400, suitable for high pressure applications.

2. Great Resistance To Corrosion

Excellent performance in seawater, hydrofluoric acid, sulfuric acid and chloride-ion stress corrosion cracking.

3. Non-Magnetic Feature

Non-magnetic down to -101°C cryogenic temperatures, excellent for directional drilling equipment and electronic housings.

4. Effortless Construction

Eliminates weld seam weaknesses and provides uniform wall thickness for reliable performance.

5. Wide Range of Temperature

Retains structural integrity from cryogenic temperatures to 650°C.

6. Thermal Stability 

Withstands oxidation and retains its mechanical characteristics under considerable temperature swings.

Application

Monel K500 Seamless Tube excels in environments demanding maximum reliability:

Oil & Gas Subsea Engineering

Used in downhole equipment, drill collars and instrument housings in sour wells with H2S and CO2. Standard stainless steels would be destroyed by high pressure and corrosive brine.

Marine Propulsion and Fluid Handling

Used in pump shafts, sleeves and valve trim for high velocity seawater applications where cavitation and erosion corrosion are prominent.

Components for Aerospace

Used in rocket engine components and high pressure liquid oxygen systems where structural stiffness and resistance to embrittlement are important.

Chemical Processing 

For use in reactors handling volatile halogens and corrosive acids, where strength and corrosion resistance are required.

Factory 

TSM Technology operates a Monel K500 Seamless Tube state-of-the-art manufacturing complex spanning 60,000㎡. Our facility houses advanced equipment including:

• Precision extrusion lines
• Multi-stage cold drawing machines
• Controlled atmosphere heat treatment furnaces
• Advanced NDT inspection stations
• Clean room finishing areas

What is the Process of Manufacturing Monel K500 Seamless Tube?

Step 1: Selection of raw materials

Nickel copper alloy ingots are produced by recognised providers with high purity and correct chemical composition.

Step 2: Hot Extrusion Process

These billets are heated and extruded via precise dies into flawless hollow tubes.

Step 3: Cold Drawing 

Multiple passes via drawing dies are used to get accurate measurements and better surface polish.

Step 4: Annealing of Solution

The tubes are heat treated at 980oC to dissolve precipitates and get a homogeneous microstructure.

Step 5: Age Hardening 

Corrosion resistance is retained and greater strength is obtained by controlled precipitation hardening at 600°C for 16 hours.

Step 6 Finishing

The final surface treatment is brilliant annealing, pickling or polishing according to your specifications.

Quality Control

TSM Technology has a strict multi-stage inspection process:

1. PMI (Positive Material Identification)

Sophisticated spectrometry verifies the correct Ni-Cu-Al-Ti composition.

2. Hydrostatic Testing 

Each tube is leak-tested at 1.5x rated operating pressure.

3. Non-Destructive Testing (NDT) 

Ultrasonic Testing (UT) and Eddy Current Testing (ECT) may be used to discover internal flaws, laminations or wall thinning.

4. Testing of hardness

Confirms successful precipitation hardening cycle (target range 28 to 35 HRC).

5.Dimensional Accuracy

Specialised fittings must fulfil strict tolerances for exterior diameter and wall thickness requiring precision gauging.

6. Corrosion Testing

Sample testing in simulated service environments validates performance claims.

Package and Shipping

Standard Packaging:

• Plastic caps on both tube ends
• Bundled with steel straps
• Wooden cases or plywood boxes for export
• Marking includes heat number, size, and grade

Shipping Options:

• Sea freight for bulk orders
• Air freight for urgent requirements
• Express delivery for samples

Documentation:

• Commercial invoice
• Packing list
• Material test certificate
• Certificate of origin (if required)

FAQ

Q: What is the main difference between Monel 400 and the product?

A：While both offer similar corrosion resistance, the K500 variant is age-hardened, providing significantly higher tensile and yield strength — making it suitable for high-pressure applications.

Q: Can it be used in sour gas (H2S) service?

A: Yes, it is NACE MR0175 compliant when properly aged and processed to prevent hydrogen embrittlement. This makes it ideal for oil and gas downhole applications.

Q: Is the tube magnetic?

A：No, it remains non-magnetic in most practical conditions, making it perfect for electronic housings in mining and drilling instrumentation.

Q: What is the maximum service temperature?

A：It performs effectively up to 650°C (1200°F). Beyond this temperature, oxidation rates increase and mechanical properties may shift.

Q: Does it require special welding procedures?

A：Yes, the tube should be welded in the annealed state and then age-hardened, or handled with specific fillers like Monel 60 to maintain system performance integrity.

Q6: What lead time can I expect for custom sizes?

A：Custom orders typically require 20-45 days depending on specifications and quantity. We maintain stock of standard sizes for faster delivery.

Q: Do you provide material certificates?

A：Yes, we provide complete material traceability including MTC (Material Test Certificate), SGS reports, and third-party inspection certificates upon request.

Contact Us

Ready to enhance your Monel K500 Seamless Tube project with high-performance tubing? Contact TSM Technology at info@tsmnialloy.com for technical specifications, quotations, and samples. Our team is ready to assist you.