ASTM B127 Monel 400
ASTM B127 is a standard specification for Monel 400 (UNS N04400), a nickel-copper alloy that is primarily composed of 63% nickel and 28-34% copper. This standard applies to seamless and welded tubing made from Monel 400. Monel 400 is highly valued for its corrosion resistance and strength in harsh environments, particularly in marine and chemical applications.
Key Features of ASTM B127 Monel 400
Composition: Primarily Nickel (63%) and Copper (28-34%), with small amounts of iron, manganese, carbon, and silicon.
Corrosion Resistance: Excellent in seawater, alkaline solutions, and acidic environments. Highly resistant to pitting, stress corrosion cracking, and other forms of corrosion.
Temperature Resistance: Performs well in high-temperature environments up to around 1000°F (537°C).
Properties of Monel 400 According to ASTM B127
| Property | Value |
|---|---|
| Tensile Strength | 70-95 ksi (485-655 MPa) |
| Yield Strength | 30-60 ksi (205-415 MPa) |
| Elongation | 35% (min) in 8 inches (200mm) |
| Hardness | 75-95 Rockwell B |
| Density | 8.8 g/cm³ (0.318 lb/in³) |
| Melting Point | 1300-1350°C (2372-2462°F) |
| Electrical Resistivity | 0.49 microhm-cm |
Applications of ASTM B127 Monel 400 Tubing
Marine: Used extensively for seawater piping, heat exchangers, and other equipment exposed to marine environments.
Chemical Processing: Ideal for applications involving alkaline and acidic solutions.
Aerospace: Components that require high-strength, corrosion-resistant materials in harsh environments.
Oil and Gas: Employed in offshore structures, underwater pipelines, and reactors.
Welding Monel 400 per ASTM B127
Welding Methods: TIG (GTAW), MIG (GMAW), and SMAW (Stick) welding are common methods for welding Monel 400.
Filler Materials: Typically, ERNiCu-7 filler material is used to ensure compatibility and maintain the corrosion resistance of the base metal.
Summary
ASTM B127 specifies Monel 400 for seamless and welded tubing applications, offering outstanding corrosion resistance and mechanical strength in harsh environments. This alloy is highly resistant to a range of aggressive conditions, making it a popular choice in marine, chemical, and high-temperature applications.
SSM provides Monel 400 tubing and other related products, tailored to meet ASTM B127 specifications, offering quality solutions for industries that demand durability and reliability.
