Alloy 401,Monel 401 Other/Similar Specs,,E FORU

British Specs:，American Specs:，German Specs:

**Technical Datasheet: Monel® 401 / Alloy 401 (UNS N04401) - Other Specifications & Similar Alloys** --- ### **Overview** Monel® 401 (UNS N04401) is a specialized nickel-copper alloy engineered for applications requiring controlled thermal expansion characteristics and excellent electrical conductivity. This datasheet provides comprehensive information on additional specifications, comparable grades, and technical details for proper material selection and application engineering. --- ### **Chemical Composition (Weight %)** | Element | Monel 401 | Monel 400 | Inconel 600 | Cupronickel 70-30 | |---------|------------|------------|-------------|-------------------| | Nickel (Ni) | 40.0-45.0 | 63.0-70.0 | ≥72.0 | 29.0-33.0 | | Copper (Cu) | Balance | 28.0-34.0 | - | Balance | | Iron (Fe) | 1.0-2.0 | ≤2.5 | 6.0-10.0 | 0.4-1.0 | | Manganese (Mn) | 1.5-2.5 | ≤2.0 | ≤1.0 | ≤1.0 | | Carbon (C) | 0.1-0.25 | ≤0.3 | ≤0.15 | ≤0.06 | | Chromium (Cr) | - | - | 14.0-17.0 | - | --- ### **Physical Properties Comparison** | Property | Monel 401 | Monel 400 | Inconel 600 | Cupronickel 70-30 | |----------|------------|------------|-------------|-------------------| | Density (g/cm³) | 8.83 | 8.80 | 8.47 | 8.94 | | Melting Point (°C) | 1300-1350 | 1300-1350 | 1370-1425 | 1170-1240 | | Thermal Conductivity (W/m·K) | 25.2 | 21.8 | 14.9 | 29.0 | | Thermal Expansion (μm/m·°C) | 14.5 | 13.9 | 13.3 | 16.5 | | Electrical Resistivity (μΩ·m) | 0.49 | 0.51 | 1.03 | 0.39 | --- ### **Mechanical Properties Comparison** **Annealed Condition:** | Property | Monel 401 | Monel 400 | Inconel 600 | Cupronickel 70-30 | |----------|------------|------------|-------------|-------------------| | Tensile Strength (MPa) | 480-550 | 480-550 | 550-655 | 370-470 | | Yield Strength (MPa) | 170-240 | 170-240 | 240-345 | 140-220 | | Elongation (%) | 35-45 | 35-45 | 40-45 | 35-45 | | Hardness (HRB) | 65-75 | 65-75 | 65-85 | 50-65 | --- ### **Alternative & Similar Alloys** **Monel 400 (UNS N04400):** - Higher nickel content for better corrosion resistance - Superior strength in reducing environments - More widely available in various product forms - Lower thermal expansion coefficient **Inconel 600 (UNS N06600):** - Superior high-temperature strength - Excellent oxidation resistance - Higher cost but better elevated temperature properties - Contains chromium for improved corrosion resistance **Cupronickel 70-30 (UNS C71500):** - Superior seawater corrosion resistance - Better thermal conductivity - Lower cost for marine applications - Lower strength at elevated temperatures **Nickel 200 (UNS N02200):** - Higher purity nickel (99.6% min) - Better magnetic and thermal properties - Superior corrosion resistance in caustic environments - Higher electrical conductivity --- ### **Special Applications & Considerations** **Unique Advantages of Monel 401:** - Controlled thermal expansion matching many glasses and ceramics - Excellent electrical conductivity for electronic applications - Good combination of strength and ductility - Suitable for glass-to-metal seals - Reliable performance in thermal cycling applications **Limitation Considerations:** - Limited availability in some product forms - Higher cost than copper-based alloys - Not recommended for strongly oxidizing acids - Special handling required for electronic grade applications --- ### **International Standards Cross-Reference** | Standard Type | Monel 401 | Similar Specifications | |---------------|------------|------------------------| | **ASTM** | B164 (Rod/Bar) | B164 (Monel 400) | | **ASTM** | B165 (Pipe/Tube) | B167 (Inconel 600) | | **ASME** | SB-164 | SB-164 | | **ASME** | SB-165 | SB-167 | | **UNS** | N04401 | N04400, N06600 | | **DIN** | 2.4360 | 2.4360, 2.4816 | | **EN** | NiCu30Fe | NiCu30Fe, NiCr15Fe | --- ### **Specialized Product Forms** **Electronic Grade Materials:** - Ultra-pure versions for semiconductor applications - Special surface finishes for electronic components - Precision tolerances for lead frame applications - Clean room processing available **Special Processing:** - Vacuum melting for improved purity - Controlled grain size for specific applications - Special heat treatments for optimized properties - Custom metallurgical conditions available --- ### **Quality & Certification Standards** **Testing Standards:** - ASTM E8: Tension Testing of Metallic Materials - ASTM E112: Grain Size Determination - ASTM E384: Microindentation Hardness Testing - ASTM E18: Rockwell Hardness Testing **Certification Requirements:** - Mill Test Certificates per EN 10204 3.1/3.2 - Special electronic grade certifications - RoHS and REACH compliance - Cleanliness certifications for critical applications --- ### **Technical Notes** **Fabrication Considerations:** - Cold working increases strength but reduces thermal stability - Annealing temperature critical for optimal properties - Special cleaning required for electronic applications - Storage conditions important for surface quality **Application Guidelines:** - Suitable for continuous service up to 480°C (900°F) - Excellent for cryogenic applications - Good performance in marine environments - Recommended for vacuum service applications --- ### **Key Selection Criteria** **Choose Monel 401 when:** - Controlled thermal expansion is required - Good electrical conductivity needed - Glass-to-metal seals are involved - Thermal cycling performance is critical - Electronic or electrical applications **Consider alternatives when:** - Higher temperature capability required - Extreme corrosion conditions exist - Cost is primary consideration - Specialized properties needed --- **Notes:** - "Monel" is a registered trademark of Special Metals Corporation - All comparative data represents typical values - Consult technical experts for specific application requirements - Properties may vary with processing and heat treatment *For comprehensive technical support and material selection assistance, consult with qualified materials engineering specialists.*

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2934 gallon liquid totes Special package is available on request.