Wuxi Nickel Alloy New Material Technology Co., Ltd
Wuxi Nickel Alloy New Material Technology Co., Ltd
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Monel K-500 Alloy Pipes – Age-Hardened Nickel-Copper Tubes for Harsh Environments
Product Overview
Monel K-500 pipes, also known by UNS N05500, are a precipitation-hardenable nickel-copper alloy that combines the excellent corrosion resistance of Monel 400 with enhanced strength and hardness. This is achieved through the addition of aluminum and titanium, followed by a thermal aging process. The resulting alloy exhibits approximately three times the yield strength and double the tensile strength of Monel 400, making it suitable for demanding applications in various industries. Monel K-500 maintains its mechanical properties across a wide temperature range, from cryogenic conditions up to 480°C (896°F), and is non-magnetic, which is advantageous in electronic and marine applications.
Chemical Composition
| Element | Ni (%) | Cu (%) | Al (%) | Ti (%) | Fe (%) | Mn (%) | Si (%) | C (%) | S (%) |
|---|---|---|---|---|---|---|---|---|---|
| Monel K-500 | ≥63.0 | 27.0–33.0 | 2.30–3.15 | 0.35–0.85 | ≤2.0 | ≤1.5 | ≤0.5 | ≤0.25 | ≤0.010 |
Mechanical Properties
| Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRC) |
|---|---|---|---|---|
| Annealed | 690–850 | 275–550 | ≥20 | ≤75 |
| Aged | 1100–1300 | 760–1000 | 10–20 | 27–38 |
Physical Properties
| Property | Value |
|---|---|
| Density | 8.44 g/cm³ |
| Melting Point | 1315–1350°C |
| Electrical Resistivity | 5.11 × 10⁻⁵ Ω·cm |
| Thermal Conductivity | 14.8 W/m·K |
| Specific Heat | 0.427 J/g·°C |
Standards and Specifications
Monel K-500 pipes conform to the following standards:
ASTM B865
ASME SB-865
AMS 4676
DIN 17751
BS 3072NA18
ISO 6208
Applications
Monel K-500 pipes are widely used in industries requiring high strength and corrosion resistance:
Marine Engineering: Propeller shafts, seawater valves, and pump components.
Oil and Gas: Drill collars, valve stems, and downhole equipment.
Chemical Processing: Pumps, valves, and heat exchangers handling corrosive fluids.
Aerospace: Aircraft landing gear and helicopter rotor blades.
Pulp and Paper: Doctor blades and scrapers.
Q1: What is the primary advantage of using Monel K-500 pipes over Monel 400?
A1: Monel K-500 offers approximately three times the yield strength and double the tensile strength compared to Monel 400, making it suitable for applications requiring higher strength and hardness.
Q2: Is Monel K-500 resistant to seawater corrosion?
A2: Yes, Monel K-500 exhibits excellent resistance to seawater corrosion, making it ideal for marine applications.
Q3: Can Monel K-500 pipes be welded?
A3: Yes, Monel K-500 pipes can be welded; however, special procedures may be required to maintain their strength after welding.
Q4: What industries benefit from Monel K-500 pipes?
A4: Industries such as marine, chemical processing, oil and gas, aerospace, and paper and pulp benefit from the use of Monel K-500 pipes due to their superior mechanical properties and corrosion resistance.