Alloy 42,Nilo 42 Strip,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 STRIP** **UNS K94100 - Precision Strip Product** --- ### **1. OVERVIEW** Alloy 42 (commercially known as **Nilo 42**) is a **nickel-iron alloy** with precisely controlled **42% nickel content**, engineered to deliver a **thermal expansion coefficient** that perfectly matches **borosilicate glass, alumina ceramics, and critical semiconductor materials**. Supplied as **precision strip**, this product offers exceptional dimensional stability and formability for high-volume precision component manufacturing. The alloy is registered under the Unified Numbering System as **UNS K94100**. --- ### **2. CHEMICAL COMPOSITION (Weight %)** | Element | Alloy 42 / Nilo 42 Strip | 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 | Annealed Condition | Half-Hard Condition | |---------------------------------|--------------------|---------------------| | **CTE (20–300°C)** | 4.5 – 5.5 × 10⁻⁶/°C | 4.5 – 5.5 × 10⁻⁶/°C | | **Density** | 8.11 g/cm³ | 8.11 g/cm³ | | **Tensile Strength** | 480 – 550 MPa | 550 – 650 MPa | | **Yield Strength (0.2% Offset)**| 250 – 320 MPa | 400 – 500 MPa | | **Elongation (in 2")** | 35 – 45% | 15 – 25% | | **Hardness (Rockwell B)** | 60 – 75 HRB | 80 – 95 HRB | | **Electrical Resistivity** | 0.75 μΩ·m | 0.75 μΩ·m | | **Thermal Conductivity** | 14.5 W/m·K | 14.5 W/m·K | --- ### **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. STRIP SPECIFICATIONS** #### **Dimensional Range** - **Thickness**: 0.05 mm to 2.0 mm (±0.005 mm tolerance) - **Width**: 2.0 mm to 600 mm (±0.05 mm tolerance) - **Length**: Coils up to 5000 meters, cut lengths available #### **Temper Conditions** - **Annealed (Soft)**: Optimal for deep drawing and severe forming - **Quarter-Hard**: Good formability with moderate strength - **Half-Hard**: Balanced formability and spring properties - **Hard**: Maximum strength for spring applications #### **Surface Finish** - **Standard**: Matte finish (Ra 0.4-0.8 μm) - **Bright**: Bright annealed finish (Ra 0.1-0.3 μm) - **Special**: Coated or plated surfaces available --- ### **6. PRODUCT APPLICATIONS** #### **6.1 Electronics & Semiconductor** - **Lead frames** for ICs and transistors - **Semiconductor packaging** components - **Connector contacts** and springs - **Relay and switch** components #### **6.2 Automotive Electronics** - **Sensor elements** and housings - **Electronic control unit** components - **Ignition system** parts - **Power electronics** substrates #### **6.3 Telecommunications** - **RF shielding** components - **Waveguide** elements - **Fiber optic** alignment parts - **Antenna** components #### **6.4 Consumer Electronics** - **Battery contacts** and springs - **SIM card** connectors - **Display mounting** elements - **Miniature relay** components --- ### **7. PROCESSING CHARACTERISTICS** #### **Stamping & Blanking** - **Fine Blanking**: Excellent for precision components - **High-Speed Stamping**: Suitable for production rates up to 1000 SPM - **Tool Life**: Extended tool life with proper clearance (8-12% of thickness) - **Burr Height**: Controlled to ≤ 0.02 mm #### **Forming & Deep Drawing** - **Deep Drawing**: Excellent in annealed condition - **Bend Radius**: Minimum 0.5× thickness for 90° bends - **Springback**: Predictable and consistent - **Work Hardening**: Moderate, requiring intermediate annealing for severe forming #### **Heat Treatment** - **Annealing**: 750-850°C in protective atmosphere - **Stress Relieving**: 400-500°C for 1-2 hours - **Grain Size**: Controlled to ASTM 7-9 for optimal formability --- ### **8. QUALITY ASSURANCE** #### **Dimensional Control** - **Thickness**: Laser gauge monitoring during rolling - **Width**: Precision slitting with edge condition monitoring - **Camber**: Controlled to ≤ 1 mm per 2 meters - **Flatness**: Standard ≤ 5 mm/m, precision ≤ 2 mm/m available #### **Material Testing** - **Chemical Analysis**: Spectrometer verification for each heat - **Mechanical Testing**: Tensile and hardness testing per lot - **Surface Quality**: 100% visual inspection for critical applications - **Microcleanliness**: Controlled inclusion content --- ### **9. PACKAGING & DELIVERY** #### **Standard Packaging** - **Coils**: Wooden or steel reels with protective wrapping - **Cut Lengths**: Stacked and boxed with interleaving - **Width Protection**: Edge protectors for precision widths - **Identification**: Continuous marking with heat number and dimensions #### **Special Requirements** - **Cleanroom Packaging**: Class 1000 environment available - **VCI Protection**: Volatile corrosion inhibitor packaging - **Dry Atmosphere**: Nitrogen purged packaging for sensitive applications - **Just-in-Time**: Scheduled delivery programs --- ### **10. TECHNICAL SUPPORT** - **Application Engineering**: Component design optimization - **Tooling Design**: Stamping and forming tool recommendations - **Process Development**: Custom temper and surface treatments - **Quality Planning**: Implementation of statistical process control --- **Note:** For high-volume precision stamping applications, technical consultation is recommended to optimize material selection and processing parameters. Sample material available for evaluation and process development.

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 2450 gallon liquid totes Special package is available on request.