Alloy 42,Nilo 42 Sheet,UNS K94100,E FORU

British Specs:，American Specs: ASTM F30 ASTM B 753 AMS 5683 Welding Wire，German Specs: WS 1.3917,DIN 17745 AFNOR NF A54-301

**PRODUCT DATASHEET: ALLOY 42 / NILO 42 SHEET** **UNS K94100 - Sheet Product** --- ### **1. OVERVIEW** Alloy 42 (commercially known as **Nilo 42**) is a **nickel-iron alloy** with a controlled nickel content of approximately **42%**, specifically engineered to provide a **thermal expansion coefficient** that closely matches **borosilicate glass, alumina ceramics, and semiconductor materials**. Supplied in **sheet form**, this product offers exceptional dimensional stability and is ideal for applications requiring precise thermal matching in thin, flat configurations. The alloy is registered under the Unified Numbering System as **UNS K94100**. --- ### **2. CHEMICAL COMPOSITION (Weight %)** | Element | Alloy 42 / Nilo 42 Sheet | UNS K94100 Requirements | |------------------|--------------------------|-------------------------| | **Nickel (Ni)** | 41.0 – 42.5% | 41.0 – 42.5% | | **Iron (Fe)** | Balance | Balance | | **Manganese (Mn)**| 0.50 – 0.80% | ≤ 0.80% | | **Silicon (Si)** | 0.15 – 0.30% | ≤ 0.30% | | **Carbon (C)** | ≤ 0.05% | ≤ 0.05% | | **Chromium (Cr)**| ≤ 0.15% | ≤ 0.15% | | **Copper (Cu)** | ≤ 0.05% | ≤ 0.05% | | **Aluminum (Al)**| ≤ 0.05% | ≤ 0.05% | | **Sulfur (S)** | ≤ 0.015% | ≤ 0.015% | | **Phosphorus (P)**| ≤ 0.015% | ≤ 0.015% | --- ### **3. PHYSICAL & MECHANICAL PROPERTIES** | Property | Typical Value (Annealed) | |---------------------------------|--------------------------| | **CTE (20–300°C)** | 4.5 – 5.5 × 10⁻⁶/°C | | **Density** | 8.11 g/cm³ | | **Melting Point** | 1420 – 1450°C | | **Tensile Strength** | 510 – 610 MPa | | **Yield Strength (0.2% Offset)**| 270 – 370 MPa | | **Elongation (in 2")** | 30 – 40% | | **Modulus of Elasticity** | 145 GPa | | **Hardness (Rockwell B)** | 65 – 80 HRB | | **Electrical Resistivity** | 0.75 μΩ·m | | **Thermal Conductivity** | 14.5 W/m·K | | **Curie Temperature** | 360°C | --- ### **4. INTERNATIONAL STANDARDS & EQUIVALENTS** | Standard Type | Designation | |-------------------------|----------------------| | **UNS** | K94100 | | **ASTM** | F30 (Alloy 42) | | **EN (European)** | Ni42Fe (1.3917) | | **ISO** | NiFe42 | | **JIS** | C42N | | **GB (China)** | 4J42 | | **DIN** | Ni42 | --- ### **5. PRODUCT SPECIFICATIONS** #### **Standard Sheet** - **Thickness**: 0.1 mm to 3.0 mm - **Width**: 100 mm to 600 mm - **Length**: 500 mm to 2000 mm - **Tolerance**: ASTM A480/A480M #### **Precision Cold-Rolled Sheet** - **Thickness**: 0.05 mm to 2.0 mm - **Width**: 50 mm to 500 mm - **Length**: Coil or cut-to-length - **Surface Finish**: Bright annealed or skin-passed #### **Temper Conditions** - **Annealed (Soft)**: Optimal for deep drawing and forming - **Half-Hard**: Balanced formability and strength - **Hard**: Maximum strength for structural applications --- ### **6. PRODUCT APPLICATIONS** #### **6.1 Electronics & Semiconductor** - **Lead frames** for integrated circuits and transistors - **Semiconductor packaging** substrates - **Electronic connector** components - **Chip capacitor** bases #### **6.2 Glass & Ceramic Sealing** - **Hermetic seal** components - **Glass-to-metal seal** assemblies - **Ceramic package** lids and bases - **Optical window** frames #### **6.3 Automotive Electronics** - **Sensor mounting** brackets - **ECU housing** components - **Ignition system** parts - **Power module** substrates #### **6.4 Consumer Electronics** - **LED packaging** components - **Display mounting** elements - **Power supply** shielding - **Communication device** housings --- ### **7. TECHNICAL ADVANTAGES** - **Perfect CTE match** with glass and ceramic materials - **Excellent deep drawing** capabilities in annealed condition - **Good weldability** using TIG, laser, or resistance methods - **Superior dimensional stability** during thermal cycling - **Excellent surface quality** for precision applications - **Good corrosion resistance** in typical service environments - **Compatible with various plating** and coating processes --- ### **8. FABRICATION CHARACTERISTICS** #### **Forming & Stamping** - **Deep Drawing**: Excellent in annealed condition - **Bending**: Minimum bend radius 1× thickness - **Stamping**: Suitable for high-speed production - **Blank Size**: Optimized for material utilization #### **Joining Methods** - **Welding**: TIG, laser, and resistance welding compatible - **Brazing**: Standard silver-based brazing alloys suitable - **Adhesive Bonding**: Good surface for epoxy and adhesive bonding - **Mechanical Fastening**: Suitable for riveting and screw mounting #### **Surface Treatment** - **Plating**: Nickel, gold, silver, and tin plating compatible - **Passivation**: Chemical passivation available - **Coating**: Organic and inorganic coatings applicable - **Cleaning**: Standard industrial cleaning methods suitable --- ### **9. QUALITY ASSURANCE** - **Certification**: EN 10204 3.1/3.2 material certificates - **Dimensional Control**: Statistical process control implemented - **Surface Inspection**: 100% visual inspection for critical applications - **Mechanical Testing**: Regular tensile and hardness testing - **Chemical Analysis**: Ladle and product analysis verification - **Traceability**: Complete production history maintained --- ### **10. PACKAGING OPTIONS** - **Standard Packaging**: Waterproof paper with wooden crates - **Special Packaging**: VCI paper for corrosion protection - **Cleanroom Packaging**: Class 1000 cleanroom packaging available - **Coil Packaging**: Wooden reels with edge protection - **Identification**: Clear marking with full material description --- **Note:** For applications requiring specific thermal expansion characteristics or specialized surface finishes, contact our technical team for customized recommendations. Technical data sheets and processing guidelines available upon request.

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 2449 gallon liquid totes Special package is available on request.