Monel R-405 | Premium Nickel-Copper Alloy Supplier & Exporter – Huaxiao-Alloy
Supplied by Huaxiao-Alloy – Your Trusted Global Alloy Partner
1.0 Introduction to Monel R-405
Monel R-405 is a nickel-copper alloy known for exceptional machinability, superior corrosion resistance, and strength comparable to Monel 400. Developed specifically for automatic-screw-machine applications, Monel R-405 contains a controlled amount of sulfur, which enhances its chip-breaking ability and allows faster cutting speeds without sacrificing mechanical integrity.
At Huaxiao-Alloy, a leading Chinese metal manufacturer and exporter, we supply Monel R-405 in all standard forms: bars, rods, sheets, plates, pipes, tubes, wires, fittings, and flanges. With production bases in Wuxi, Foshan, and Shanghai, and years of experience serving clients in marine, chemical, and aerospace industries, we guarantee international standards, competitive pricing, and fast global delivery.
2.0 Chemical Composition of Monel R-405
The typical chemical composition of Monel R-405 is shown below. This alloy’s composition closely mirrors Monel 400, except for the higher sulfur content (0.025–0.060%) for improved machinability.
| Element | Content (% by weight) |
|---|---|
| Nickel (Ni) | 63.0 min |
| Copper (Cu) | 28.0 – 34.0 |
| Iron (Fe) | 2.5 max |
| Manganese (Mn) | 2.0 max |
| Carbon (C) | 0.30 max |
| Silicon (Si) | 0.50 max |
| Sulfur (S) | 0.025 – 0.060 |
Monel R-405’s elevated sulfur enables smoother chip separation during turning, threading, and drilling — ideal for precision components, fasteners, and automatic screw-machined parts.
3.0 Mechanical Properties
Huaxiao-Alloy ensures full compliance with ASTM B164, ASTM B865, and AMS 4675. Typical mechanical properties in the annealed condition are:
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength | 480 MPa min | 70 ksi min |
| Yield Strength (0.2% offset) | 170 MPa min | 25 ksi min |
| Elongation | 40 % min | 40 % min |
| Hardness (Brinell) | 110 HB approx | — |
| Density | 8.80 g/cm³ | 0.318 lb/in³ |
Even with added sulfur, Monel R-405 maintains similar strength and corrosion resistance to Monel 400 — making it ideal for high-precision marine and chemical equipment.
4.0 Physical Properties
| Property | Value | Condition |
|---|---|---|
| Density | 8.80 g/cm³ | At 20 °C |
| Melting Range | 1300 – 1350 °C | — |
| Electrical Resistivity | 5.95 × 10⁻⁷ Ω·m | At 20 °C |
| Thermal Conductivity | 21.8 W/m·K | At 20 °C |
| Coefficient of Expansion | 13.9 × 10⁻⁶ / °C | 20–100 °C |
| Modulus of Elasticity | 179 GPa | — |
5.0 Standards and Specifications
Huaxiao-Alloy supplies Monel R-405 per the following standards:
ASTM B164 – Bars, Rods, and Wires
ASTM B865 – Forgings
AMS 4675 – Bars and Forgings for Aerospace Use
DIN 2.4360 / UNS N04405 – Equivalent Designations
All products come with mill test certificates (EN 10204 3.1), chemical analysis reports, and mechanical property verification.
6.0 Available Product Forms from Huaxiao-Alloy
Huaxiao-Alloy offers a complete range of Monel R-405 products for global clients:
| Form | Dimensions | Availability |
|---|---|---|
| Bar / Rod | Ø 6 – 300 mm | In Stock |
| Plate / Sheet | 1 – 50 mm thick | In Stock |
| Pipe / Tube | Ø 10 – 600 mm | Seamless & Welded |
| Wire | Ø 0.5 – 10 mm | Coil or Cut Length |
| Fittings | Elbows, Tees, Reducers | Custom Machined |
| Flanges | ANSI / DIN / JIS | Ready to Ship |
7.0 Key Features and Advantages
Superior Machinability – Sulfur additions enhance chip-breaking and surface finish, reducing tool wear and machining costs.
High Corrosion Resistance – Performs well in marine, acidic, and alkaline environments.
Strength and Toughness – Maintains excellent ductility at sub-zero and elevated temperatures.
Thermal Stability – Reliable in high-temperature processing and furnace applications.
Dimensional Consistency – Tight tolerances and precision finish ensured by Huaxiao-Alloy’s CNC machining centers.
Excellent Weldability – Suitable for GMAW, GTAW, and SMAW using Monel 60 filler.
8.0 Typical Applications
Monel R-405 is widely used across sectors demanding corrosion-resistant, high-machinability alloys:
Marine Engineering: Propeller shafts, seawater valves, pump shafts
Chemical Processing: Alkali and acid handling systems
Oil & Gas: Instrumentation fittings, pressure gauges, sensors
Aerospace: Fasteners, hydraulic components
Power Generation: Condenser tubes, heat exchangers
Electrical Equipment: Switchgear and electronic connectors
9.0 Processing and Machinability
Monel R-405 can be machined at high speeds comparable to free-cutting brasses, thanks to its sulfur inclusions forming manganese sulfide.
Huaxiao-Alloy recommends:
Turning: Use sharp carbide tools, moderate feed, and high cutting speed.
Drilling: Apply sulfurized oil; back out frequently to clear chips.
Threading: Lower speeds to prevent galling.
Annealing: 870–980 °C followed by air cooling.
Work Hardening: Moderate; cold-working increases tensile strength.
10.0 Comparison – Monel R-405 vs Monel 400
| Property | Monel 400 | Monel R-405 | Remarks |
|---|---|---|---|
| Sulfur (%) | ≤ 0.024 | 0.025 – 0.060 | Improves machinability |
| Machinability | Fair | Excellent | R-405 is free-machining grade |
| Strength | Similar | Similar | Nearly identical |
| Corrosion Resistance | Excellent | Excellent | Unaffected by sulfur addition |
| Weldability | Excellent | Good | Avoid weld zones with sulfur segregation |
11.0 Quality Assurance at Huaxiao-Alloy
Huaxiao-Alloy operates advanced melting, hot-rolling, and precision machining facilities in Wuxi, Foshan, and Shanghai Baoshan. Our quality control follows ISO 9001 and ISO 14001 standards.
Each batch undergoes:
Spectrochemical analysis (ICP/OES)
Ultrasonic & Eddy-current inspection
Tensile & Hardness testing
Dimensional checks
Visual & surface defect inspection
Customers receive traceable documentation, including heat numbers and inspection certificates, ensuring complete transparency.
12.0 Packaging & Delivery
Packaging: Wooden crates, steel-strapped bundles, moisture-proof wrapping.
Marking: Material grade, heat number, size, and origin – Huaxiao-Alloy China.
Delivery Time: 7 – 20 days depending on size and quantity.
Export Ports: Shanghai, Ningbo, Guangzhou.
We coordinate global logistics for clients in Europe, America, the Middle East, and Southeast Asia, ensuring smooth customs clearance and on-time delivery.
13.0 Why Choose Huaxiao-Alloy as Your Monel R-405 Supplier
Complete Range: Bars, plates, tubes, wires, and fittings from one source.
High Precision: CNC finishing and tight tolerance control.
Large Inventory: Over 2,000 tons of nickel-based alloys in stock.
Competitive Pricing: Direct-from-factory export advantage.
Fast Response: 24-hour quotation and customized cutting service.
Global Experience: Supplied to 80+ countries since 2009.
Technical Expertise: Support from metallurgical engineers for alloy selection.
Huaxiao-Alloy stands as a trusted global partner for OEMs, distributors, and end-users seeking reliable, high-performance nickel-copper alloys.
A1: The sulfur content in R-405 improves machinability. Otherwise, mechanical and corrosion properties remain similar.
A2: Yes, all materials are accompanied by EN 10204 3.1 Mill Test Certificates and relevant ASTM specifications.
A3: Yes, but careful control is needed to avoid sulfur segregation; GTAW with Monel 60 filler is recommended.
A4: 150–250 sfm for turning and 50–100 sfm for drilling depending on tool material and rigidity.
A5: It exhibits outstanding resistance to saltwater corrosion, making it ideal for marine shafts and valves.
A6: Bars, plates, rods, wires, tubes, flanges, and fittings are available in standard and custom sizes.
A7: Yes, Monel R-405 can be moderately cold-worked to increase strength.
A8: Bars from 6 to 300 mm diameter, plates up to 50 mm thick, and tubes up to 600 mm OD.
A9: Typically 100 kg for bars and plates; custom MOQ available for distributors.
A10: Simply email [email protected] or fill out the “Request a Quote” form on our website — our export team replies within 24 hours.
Monel R-405 | Premium Nickel-Copper Alloy Supplier & Exporter – Huaxiao-Alloy
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