Monel K500 tubing performs better than alloys like Inconel in seawater corrosion resistance and hardness after precipitation hardening. It performs similarly to Hastelloy in chemical environments but outperforms it in marine applications due to its nonmagnetic properties. Strength at high temperatures sets it apart for shafts and instrumentation.
ASTM B163 Monel K500 Seamless Tube Manufacturer
We, at Zhejiang Xintongda Special Steel (XTD), are a leading manufacturer and supplier of Monel K500 seamless tubes in China. The seamless Monel K500 tube, often known as K-Monel, is a nickel-copper alloy designated as UNS N05500. All our K-monel tubes are manufactured in accordance with the ASTM B163 standard. Monel K500 is stronger and tougher than Monel 400 as it contains aluminium and titanium, which allow for precipitation hardening. Engineers select these tubes for their high strength at elevated temperatures, oxidation resistance and excellent performance in marine and chemically corrosive environments. We use both hot and cold drawing procedures for manufacturing monel K500 seamless tubes to provide perfect dimensional control and thinner wall options. These tubes are used in oil and gas production and marine shafts that operate in harsh environments. We are a multiple internationally certified manufacturer with an annual production capacity of 25,000 tons for global markets. Stock orders are delivered within a week, while production orders take 15 to 60 days. We have no minimum order quantity for stocked items and a minimum purchase of 200 kg for any other requirements.
Product specifications:
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Standard ASTM B163 -
OD Range 6–457 mm -
Thickness 1-65 mm -
Length ≤ 22 m
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Technical Data
Technical Data
Manufacturing process of Alloy K500 Seamless Tube
We begin with high-quality billets and shape the tube initially through extrusion or rotary piercing. Cold pilgering and drawing are used to produce exact measurements and thinner walls. Depending on the application, tubes are solution treated and age hardened to acquire the required mechanical properties before final inspection and testing. To study the whole manufacturing process, kindly check out this page.
What Are The Key Features of The Monel K500 Seamless Tube?
Monel K500 seamless tubes deliver 4 core strengths: extreme hardness, corrosion resistance, precipitation hardening, and non-magnetic properties.
- Extreme Hardness and Wear Resistance: Drill collars and pump shafts in underwater risers help to prevent stress-corrosion cracking This hardness can withstand wear in extreme conditions, such as marine shafts. Thinner walls maintain structural integrity during stress.
- Resistance to Corrosion: Monel K500 has a high nickel-copper base that makes it resistant to corrosion and allows it to work well in seawater, chloride solutions, and other chemical conditions. The metal can handle tough conditions and resist pitting, crevice corrosion or stress-corrosion cracking. This is due to a naturally occurring stable passive layer.
- Precipitation Hardening Capability: Heat treatment precipitates fine particles for enhanced tensile strength up to 160-180 ksi. This process retains toughness at elevated temperatures. It suits applications needing both power and flexibility.
- Non-Magnetic Properties: Monel K500 remains nonmagnetic even after hardening, maintaining magnetic stability under stress and temperature variations. The alloy's structure prevents magnetic shifts under stress or temperature changes. This ensures consistent performance in instrumentation.
Alloy K500 Tube Equivalent Material
Monel K500 has UNS N05500 as its standard equivalent designation. This equivalent ensures material compatibility across international standards. The global equivalent grades include DIN/WNr 2.4375 and AFNOR NC 6 FC.
| GRADE | UNS | GB | JIS | ISO | DIN/EN | GOST | |
| ISC | NEW | ||||||
| Monel K-500 | N05500 | - | - | - | NW 5500 | 2.4375 | НМЖМц28-2.5-1.5 |
100% Certified Testing & Documentation
- EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
- Raw Materials Certificate
- 100% PMI
- Heat Treatment Charts
- Third-Party Inspection Report
- Surface roughness and size measurement
- Manufacturer Test Certificate (Impact Testing, Flattening, Flare, Bend, Hardness, Intergranular, Pitting Corrosion, Grain size, ET, UT, HT)
- Laboratory Test Certificate from the Government-Approved Lab
Which Industries Commonly Use Monel K500 Tubes?
Nickel alloy K500 tubes are used in harsh industries that require strong corrosion resistance and strength. Shafts, pumps, and structural components operate in extreme temperatures and seawater exposure. These components also handle sour gas wells.
Oil & Gas
Valves, pumps, downhole tubes and impellers are used to handle sour gas and H₂S corrosion. Drill collars and pump shafts in underwater risers help to prevent stress-corrosion cracking. Instrumentation lines don't crack in acidic conditions.
Marine & Offshore Engineering
Propeller shafts, seawater pipes, and chains withstand constant immersion and biofouling. Condensers in ship systems prevent saltwater from causing rust. Under cyclic loading, wires, fasteners and submarine parts maintain their integrity.
Chemical Processing
Heat exchanger tubes process acids, alkalis and reactive vapours at high temperatures. Pump and valve components are resistant to chemical assault in petrochemical processing. Instrumentation lines remain reliable even in corrosive process streams.
Aerospace
Fasteners, springs, and exhaust components can withstand oxidation and high-temperature fatigue. Precision components benefit from non-magnetic stability and dimensional correctness. Engine springs retain strength during thermal cycling.
Pulp & Paper
Doctor blades, scrapers, and digester tubes combat chlorides and pulp chemicals. They resist wear in the bleaching and processing stages. Valve trays endure abrasive slurries without pitting.
Power Generation
Condenser tubes resist steam and cooling water corrosion. Heat exchangers in turbines are there for reliable performance. Springs and fasteners support high-vibration environments.
Frequently asked Questions
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How does Monel K500 tubing compare to other nickel alloys?
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What are the mechanical properties of Alloy K-500 seamless tubes?Alloy K-500 seamless tubes show tensile strength of 140-180 ksi, yield strength of 90-120 ksi, and elongation of 20-35% after age-hardening. Hardness reaches 27-35 HRC. These values hold at temperatures up to 450-500 °C without softening.
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How is Monel K500 different from Monel 400 tube?Monel K500 adds 2.4-4% aluminium and 0.35-0.85% titanium to Monel 400 for precipitation hardening. This doubles the yield strength to 90-120 ksi versus 400's 28-50 ksi.