ASME SB-165 UNS N04400 Monel SMLS Pipe
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If you're looking for high-performance, corrosion-resistant piping for chemical, marine, or oil and gas applications, ASME SB-165 UNS N04400 Monel Seamless (SMLS) Pipe is the ideal solution.
What is ASME SB-165 UNS N04400 Monel SMLS Pipe?
Monel 400 (UNS N04400) is a nickel-copper alloy that offers excellent corrosion resistance, toughness, and strength over a wide temperature range. Pipe manufactured according to ASME SB-165 is seamless (SMLS) pipe, ensuring excellent sealing, mechanical integrity, and pressure resistance. It is widely used in marine environments, chemical processing, and the oil and gas industry, where resistance to seawater and acids is critical.
GNEE is a leading manufacturer, stockist, and supplier of high-quality pipes across various grades. Our ASTM B165 UNS N04400 seamless pipe is one of the finest on the market, and its exceptional quality makes it the most in-demand item in our inventory.
Our regular inventory of ASTM B165 UNS N04400 alloy seamless pipe includes standardized sizes ranging from 6.00mm to 114.3mm (1/4" to 4.5") in outer diameter and 0.89mm to 6.00mm (0.035" to 0.236") in wall thickness. We offer fast delivery within 3-7 days for common sizes. Each piece of UNS N04400 seamless pipe undergoes precise chemical composition control and undergoes multiple quality inspections, including eddy current testing (ECT), hydrostatic testing (20-30MPa), and ultrasonic testing (UT). We also provide Material Testing Certificate (MTC), third-party testing reports (SGS/BV), and NACE MR0175/ISO 15156 certification for corrosive environments.
ASTM B165 UNS N04400 Monel alloy pipe Specification
| Parameter | Specification |
|---|---|
| Standard | ASME SB-165 / ASTM B165 |
| Material Grade | UNS N04400 (Monel 400) |
| Type | Seamless (SMLS) Pipe |
| Outer Diameter | 1/8" – 12" (3.175 mm – 304.8 mm) |
| Wall Thickness | 0.035" – 0.250" (0.89 mm – 6.35 mm) |
| Length | 6 m standard, customizable |
| Surface Finish | Mill Finish, Polished, Pickled |
| End Finish | Plain End (PE), Beveled End (BE) |
| Certifications | ISO, SGS, BV, MTC EN 10204 3.1 / 3.2 |
Chemical Composition (Typical)
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 63.0 – 70.0 |
| Copper (Cu) | 28.0 – 34.0 |
| Iron (Fe) | ≤ 2.0 |
| Manganese (Mn) | ≤ 2.0 |
| Carbon (C) | ≤ 0.30 |
| Silicon (Si) | ≤ 0.50 |
| Sulfur (S) | ≤ 0.024 |
| Others | ≤ 0.50 |
Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 580 – 690 MPa |
| Yield Strength | 170 – 275 MPa |
| Elongation | 30 – 40% |
| Hardness | 95 – 150 HB |
| Density | 8.8 g/cm³ |
Can Monel 400 pipes be welded?
Yes, Monel 400 can be welded using TIG, MIG, or manual methods, but pre- and post-weld heat treatment is recommended for optimal corrosion resistance.
What is the difference between Monel 400 and 500?
Monel 400 has excellent general corrosion resistance, while Monel 500 has higher strength but slightly lower corrosion resistance.
Is Monel 400 magnetic?
No, it is non-magnetic, even after cold working.
What is the temperature limit for Monel 400 piping?
Continuous service up to 1000°F (540°C) in oxidizing conditions, lower in reducing acids.
Monel 400 Pipe Price (Converted to USD)
| Product Description | Price (USD) |
|---|---|
| Monel 400 Pipe Nipple : Size: 1" × 3/4" × Sch-80s × Length 3 1/2 inch | ≈ $119 USD |
| Nickel Alloy SMLS Pipe 3/4" × Sch 80s × 1 meter long Monel 400 | ≈ $139 USD |
| Monel 400 Pipe 1/4" Sch 40 (Seamless or Welded) (4–7 m long) | ≈ $27 USD |
| Monel 400 Pipe 1 1/2" Sch 40 (Seamless or Welded) (4–7 m long) | ≈ $178 USD |
Prices above are approximate retail rates (FOB china) and may vary depending on wall thickness, diameter, and surface finish.
For bulk purchases or customized sizes, discounts of 5–10% are commonly available.
Export prices can vary slightly based on Nickel market fluctuations and shipping cost (especially for Monel alloys).
Why Choose Gnee for ASME SB-165 Monel 400 Seamless Pipes
| Feature | Gnee Advantage |
|---|---|
| Quality Certification | ISO 9001, SGS, BV approved |
| Inspection Coverage | 100% PMI, UT, Eddy Current, and Hydro tests |
| Processing Capabilities | Cutting, polishing, bending, threading |
| Delivery Time | 7–15 working days depending on quantity |
| Packaging | Anti-corrosion wrapping, wooden cases, seaworthy crates |
| Payment Options | T/T, L/C, D/P available |
| Trade Terms | EXW, FOB, CIF, DDU supported |
| After-Sales Service | Free inspection photos & third-party testing available |
