Alloy R-405 (UNS N04405) is a nickel-copper alloy specifically formulated for superior machinability while retaining the high strength, toughness, and corrosion resistance characteristic of Monel alloys. The controlled sulfur addition creates chip-breaking characteristics ideal for automatic screw machines and high-volume precision components.
1. Product Specifications & AvailabilityAlloy R-405 (UNS N04405) is primarily stocked in rod and bar forms to support machining operations. Forms: Rod and Bar (Round). Other forms limited due to fabrication constraints. Certifications: ISO 9001 and AS9120 certified. Support: Stock lists, technical data, and competitive quotes available upon request.
Chemical Composition| Element | Monel® R-405 Content (%) |
|---|
| Nickel | 63 min | | Copper | 28 - 34 | | Iron | 2.50 max | | Manganese | 2.00 max | | Carbon | 0.30 max | | Silicon | 0.50 max | | Sulfur | 0.025 - 0.060 |
Physical & Mechanical Properties| Property | Metric | Imperial |
|---|
| Density | 8.80 g/cm³ | 0.318 lb/in³ | | Melting Point | 1338°C | 2440°F | | Tensile Strength (annealed) | 550 MPa | 79,800 psi | | Yield Strength (annealed) | 240 MPa | 34,800 psi | | Elongation at Break (annealed) | 40% | 40% |
2. Operating Conditions & Selection CriteriaMonel® R-405 is selected when corrosion resistance must be combined with high-volume machinability. Corrosion Resistance: Equivalent to Monel® 400 in most media. Resists seawater, hydrofluoric acid, sulfuric acid, and alkalis. Suitable for marine, chemical, and valve applications. Primary Function: Designed for high-speed automatic screw machine operations. Not intended for structural or load-bearing components in as-machined condition. Temperature Range: Maintains properties across a wide range but avoid high-temperature service due to sulfur content limitations.
3. Fabrication Guidelines & Material ComparisonMonel® R-405 requires specific processing considerations due to its sulfur-modified composition. Fabrication Guidelines: Machining: Excellent machinability. Ideal for high-speed automatic screw machines, Swiss-type lathes, and multi-spindle operations. The controlled sulfur content produces short, broken chips for improved tool life and production rates. Cold Working: Can be cold worked using standard methods. Hot Working & Forging: Not recommended. Sulfur content causes hot shortness, leading to cracking and brittleness at elevated temperatures. Welding: Generally not recommended. Risk of weld cracking due to sulfur segregation. Components should be machined from solid bar rather than fabricated. Heat Treatment: Does not respond to precipitation hardening. Hardness increases only through cold working. Annealing: Perform at 927°C (1700°F) followed by air cooling to relieve stresses from cold working.
Material Comparison: vs. Monel® 400: Monel® 400 offers similar corrosion resistance and mechanical properties but is more difficult to machine. R-405 is the preferred choice when production volumes justify the need for automated machining. vs. Monel® 404/401: Those alloys are selected for electrical or magnetic properties. R-405 is selected strictly for machinability in corrosive service. vs. Stainless Steels: Monel® R-405 provides superior resistance to seawater and reducing acids compared to standard austenitic stainless grades, with better machinability than Monel® 400.
Primary Applications: Fasteners: nuts, bolts, screws for marine and chemical environments Valve components: stems, shafts, fittings Meter components: precision parts for flow measurement High-volume screw machine products requiring Monel corrosion resistance
Contact & SupportFor detailed specifications, available bar sizes, and pricing for Monel® R-405, contact ZYTC Alloy. Our team provides certified materials and technical support for high-volume machining operations. Contact Us:Email:daisy@zytcsteel.com WhatsApp/WeChat: +86 17335753350 |
