Monel K500 Seamless Pipe for Heat Exchangers in Petroleum and Power Applications

Monel K500 Seamless Pipe Annealing Aging Heat Exchangers Petrochemical Processing

1. As a leading supplier & manufacturer in China, DINGSCO supply cost-effective Monel K-500 Products.
 

2. MONEL® alloy K-500 (UNS N05500 / W.Nr. 2.4375) is a nickel-copper alloy which combines the excellent corrosion resistance of MONEL alloy 400 with the added advantages of greater strength and hardness. The increased properties are obtained by adding aluminum and titanium to the nickel-copper base, and by heating under controlled conditions so that submicroscopic particles of Ni3 (Ti, Al) are precipitated throughout the matrix. The thermal processing used to effect precipitation is commonly called age hardening or aging.
 

3.Typical applications for MONEL alloy K-500 products are chains and cables, fasteners and springs for marine service; pump and valve components for chemical processing; doctor blades and scrapers for pulp processing in paper production; oil well drill collars and instruments, pump shafts and impellers, non-magnetic housings, safety lifts and valves for oil and gas production; and sensors and other electronic components.
 

4. A useful characteristic of the alloy is that it is virtually nonmagnetic, even at quite low temperatures. It is possible, however, to develop a magnetic layer on the surface of the material during processing. Aluminum and copper may be selectively oxidized during heating, leaving a magnetic nickel-rich film on the outside of the piece. The effect is particularly noticeable on thin wire or strip where there is a high ratio of surface to weight. The magnetic film can be removed by pickling or bright dipping in acid, and the nonmagnetic properties of the material will be restored.
The combination of low magnetic permeability, high strength and good corrosion resistance has been used to advantage in a number of applications, notably oil-well surveying equipment and electronic components.

5. MONEL alloy K-500 has been found to have exceptionally good dimensional stability, both in long-time exposure tests and in cyclic tests. This property of the alloy has led to its use in high-precision devices, such as gyros. Age hardening causes an initial volume contraction. An annealed rod contracted 2.5 x 10-4 in. per in. during aging.

6. Monel K-500 Standards

• ASTM B865   Rod and Bar
• SAE AMS 4676   Rod and Bar
• AWS A5.14 ERNiCu-8   Filler Metal

7. Physical Properties

8. Progress Processing