1. What are the main applications of Monel 404 / R-405 smooth bore pipes?
Answer:
Monel 404 / R-405 smooth bore pipes are widely used in marine engineering, chemical processing, oil & gas, and desalination systems.
Their smooth internal surface makes them ideal for fluid transport, piping systems requiring low friction, and high-corrosion environments.
2. What is the chemical composition of Monel 404 / R-405?
Answer:
Nickel: ~63%
Copper: 28–34%
Iron: 2.5%
Manganese: 2%
Carbon, Silicon, and other trace elements: small amounts
This composition provides excellent corrosion resistance and mechanical strength.
3. What are the mechanical properties of Monel 404 / R-405 pipes?
Answer:
Tensile strength: 620–750 MPa
Yield strength: 275–415 MPa
Elongation: 30–40%
Hardness (Rockwell B): 70–90
The smooth bore ensures low pressure drop and efficient fluid flow.
4. What pipe dimensions are available?
Answer:
Outer diameter (OD): 6 mm – 610 mm
Wall thickness: 1 mm – 40 mm
Lengths: standard 6 m or 12 m, with custom lengths available
Pipes can be supplied with polished or as-rolled internal surfaces depending on requirements.
5. What standards and certifications do Monel 404 / R-405 pipes meet?
Answer:
Manufactured according to ASTM B165, ASTM B164, ASTM B444 and ASME/ANSI B36.19
Material certifications such as EN10204 3.1 / 3.2, ISO, and API are available
Smooth bore and surface finish can be customized to meet project-specific standards
