ASTM B165 Monel 400 nickel-copper alloy cold-finished seamless pipe
Gnee Steel
ASTM B165 Monel 400 nickel-copper alloy cold-finished seamless pipe
ASTM B165 specifies cold-worked seamless pipe made from the nickel-copper alloy Monel 400 (UNS N04400). Known for its high strength, excellent resistance to seawater, and a wide range of corrosive environments, including many acids and bases, this alloy is suitable for marine and chemical processing applications. This material can be hardened only by cold working and can be used in the annealed or stress-relieved condition.
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What are the standards for Monel 400 pipe?
This grade of nickel-copper alloy is available in ASTM B165 and B725 specifications. Pipe is available in seamless, welded, electric-resistance-welded, and fabricated forms. ASME SB165 Monel 400 seamless pipe conforms to ASTM, ASME, and API standards and is available in nominal inside diameter sizes ranging from 15 inches to 150 inches.
Monel 400/UNS N04400 Cold-Rolled Tubing Overview
ASTM B165 Monel 400 alloy cold-rolled tubing is a nickel-copper alloy resistant to high-temperature seawater and steam, as well as saline and alkaline solutions. Monel 400 is a nickel-copper alloy with excellent corrosion resistance in a wide range of media. Monel 400 offers good corrosion resistance, excellent weldability, and medium to high strength. This alloy is used in a wide variety of applications. It exhibits excellent resistance to fast-flowing brackish or seawater, and is particularly resistant to degassed hydrochloric and hydrofluoric acids. The alloy is slightly magnetic at room temperature. Monel 400 is widely used in the chemical, petroleum, and marine industries.
Properties of ASTM B165 UNS N04400 Cold-Rolled Tubing
Corrosion resistance in a wide range of marine and chemical environments, from pure water to non-oxidizing mineral acids, salts, and alkalis. This alloy is more resistant to nickel under reducing conditions and better than copper under oxidizing conditions, but its resistance in reducing media is better than in oxidizing media.
It exhibits good mechanical properties at temperatures ranging from sub-zero to approximately 480°C.
It exhibits good resistance to sulfuric and hydrofluoric acids. However, aeration increases the corrosion rate. It can handle hydrochloric acid, but the presence of oxidizing salts greatly accelerates corrosion.
This alloy exhibits resistance to neutral, alkaline, and acidic salts, but has poor resistance to oxidizing acidic salts (such as ferric chloride).
It has excellent resistance to chloride ion stress corrosion cracking.
Chemical Composition of ASTM B165 Monel 400 nickel-copper alloy seamless pipe
| Ni | C | Mn | S | Si | Cu | Fe | |
| Max | 0.3 | 2.00 | 0.024 | 0.5 | 34.0 | 2.50 | |
| Min | 63.0 | 28.0 |
Mechanical Properties of Monel 400 cold-worked Pipe
|
Condition & Size |
Tensile Strength, min. ksi [MPa] |
Yield Strength, min. ksi [MPa] |
Elongation, min. % |
|---|---|---|---|
| *A | 70 [480] | 28 [195] | 35 |
| *B | 70 [480] | 25 [170] | 35 |
| *C | 85 [585] | 55 [380] | 15 |
ASTM B165 Monel 400 Cold-Reduced Pipe Specification
Product: Covers cold-finished seamless pipe made from Monel 400.
Surface Treatment: This specification requires pipe to be supplied in the annealed or stress-relieved condition.
Annealed Finish: Soft, matte finish.
Stress-Relieved Finish: Thin, light to medium-dark in color, heat-treated to relieve internal stresses.
ASTM B165 Monel 400 Pipe Applications
ASTM B165 Monel 400 pipe, due to its excellent performance, is widely used in harsh environments across a wide range of industries:
Marine Applications: Marine fixtures, fasteners, pump and propeller shafts, and seawater valves.
Chemical Processing: Equipment used to handle various corrosive fluids.
Power Generation: Steam turbine blades, heat exchangers, and condenser tubes.
Petroleum Industry: Crude oil stills, process vessels, and piping.
Why choose us
Gnee Steel offers testing (both destructive and non-destructive):
Material reliability identification
Mechanical property testing, such as tensile strength, elongation, and reduction of area
Large-scale testing
Chemical testing - spectral analysis
Hardness testing
Pitting corrosion protection testing
Small-scale testing
X-ray testing
Impact analysis
Eddy current testing
Hydrostatic pressure analysis
Rapid testing
Packing :
Packaging is crucial, especially for international shipments, where goods must travel through various channels before reaching their final destination. Therefore, we place special emphasis on packaging.
We utilize a variety of packaging methods, depending on the product. Our products are packaged in a variety of ways, including:
Shrink wrap
Carton packaging
Wooden pallet packaging
Wooden crate packaging
Wooden box packaging
About Gnee Steel
in one-stop service
Gnee Steel is a supplier of ASTM B165 Monel 400 Nickel-Copper Alloy Cold-Finished Seamless Pipe. Our product offerings include seamless pipe (sizes: 4-219 mm, thickness: 0.5-20 mm); welded pipe (sizes: 5.0-1219.2 mm, thickness: 0.5-20 mm); plate (sizes: 0.1-100 mm, width: 10-2500 mm); strip; alloy round bar (sizes: 3-800 mm, diameter); flat bar (sizes: 2-100 mm, thickness: 10-500 mm); hexagonal bar (sizes: 2-100 mm); wire rod; and extruded sections. We partner with steel mills to provide our customers with Alloy 625 that meets or exceeds numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS.
Gnee Steel stocks and sells ASTM B165 Monel400 Nickel-Copper Alloy Cold-Finished Seamless Pipe, pipe, tube, plate, strip, sheet, round bar, flat bar, forging billet, hexagonal bar, wire and extruded shapes. Please feel free to contact us for a quote at ss@gneemetal.com
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