Monel K500 pipe refers to a nickel-copper alloy pipe with age-hardening properties, derived from the base alloy Monel 400. This alloy contains small amounts of aluminum and titanium, achieving higher strength and hardness through a controlled age-hardening heat treatment process. HT PIPE is a monel k500 Pipe supplier with 15+ export experience. Contact us for more information and quotes for free!
alloy 500 pipe Corrosion Resistance Performance
Seawater Corrosion Resistance: Resists pitting, crevice corrosion, and stress corrosion cracking in both freshwater and seawater environments.
Acid and Alkali Corrosion Resistance: Performance in dilute acid solutions (such as sulfuric acid and hydrochloric acid) and alkaline environments, and is also resistant to organic acid corrosion.
High-Temperature Corrosion Resistance: Maintains stable corrosion resistance at temperatures up to 427°C (800°F), resisting oxidation and sulfidation in high-temperature gaseous environments.
Chloride Ion Corrosion Resistance: Resistance to chloride-induced stress corrosion cracking.
Specifications and Standards of Monel K500 Pipe
ASTM B165: Standard Specification for Nickel and Nickel-Alloy Seamless Pipe and Tube
ASTM B725: Standard Specification for Welded Nickel and Nickel-Alloy Pipe
ASME SB165: Nickel and Nickel-Alloy Seamless Pipe and Tube (for pressure vessel and boiler applications)
ASME SB725: Welded Nickel and Nickel-Alloy Pipe (for pressure vessel and boiler applications)
Chemical Composition of Monel K500 Pipe
|
Element |
Content Range (%) |
|---|---|
|
Nickel (Ni) |
63.0 min |
|
Copper (Cu) |
28.0 - 34.0 |
|
Aluminum (Al) |
2.3 - 3.15 |
|
Titanium (Ti) |
0.35 - 0.85 |
|
Iron (Fe) |
2.0 max |
|
Manganese (Mn) |
1.5 max |
|
Carbon (C) |
0.15 max |
alloy k-500 tube Mechanical Properties
|
Property |
Value |
Test Standard |
|---|---|---|
|
Tensile Strength |
≥ 1034 MPa (150,000 psi) |
ASTM B165 |
|
Yield Strength (0.2% offset) |
≥ 758 MPa (110,000 psi) |
ASTM B165 |
|
Elongation (in 50 mm) |
≥ 15% |
ASTM B165 |
|
Hardness (Rockwell C) |
≥ 30 |
ASTM E18 |
|
Modulus of Elasticity |
193 GPa (28,000 ksi) |
ASTM B165 |
monel 500 pipe Forming Process
Seamless Tubes: Manufactured using a hot extrusion + cold drawing process. Ingots are heated to 950-1050℃ and hot-extruded into hollow tube blanks. These blanks then undergo multiple cold drawing passes to control dimensional accuracy. Intermediate annealing is performed after cold drawing to relieve stress.
Welded Tubes: After forming from sheet metal, the tubes are welded using plasma arc welding or argon arc welding, using Monel K500 welding wire. Inert gas protection is used to prevent defects, and post-weld grinding ensures a smooth surface.
k500 alloy pipe Heat Treatment Process
Solution Annealing: Heated to 1040-1090℃, held at temperature, and then rapidly water-quenched to relieve stress and homogenize the composition.
Age Hardening: Heated to 450-550℃, held at temperature, and then cooled to form intermetallic compounds, significantly increasing strength and hardness while maintaining corrosion resistance.
Differences in Manufacturing Processes Between Seamless and Welded Pipes
Seamless pipes: Formed by hot extrusion and cold drawing, without welds, the process is complex and suitable for demanding high-pressure and high-temperature environments.
Welded pipes: Formed by welding rolled plates, the process is simple and low-cost, suitable for conventional applications at medium and low pressures.
