Alloy B,Brightray B Strip,,E FORU

British Specs:，American Specs:，German Specs:

**Product Data Sheet: Alloy B / Brightray B High-Temperature Alloy Strip** **1. Product Overview** Alloy B, commercially known as **Brightray B**, is a nickel-chromium (80/20) alloy renowned for its outstanding resistance to oxidation and high-temperature strength. This datasheet specifically details the **strip** form of this alloy, which is characterized by its thin, narrow, and precision-rolled cross-section. Brightray B strip is engineered for applications demanding precise dimensions, excellent surface finish, and superior fabricability in complex components operating under extreme thermal stress. The alloy forms a continuous, self-healing chromium oxide (Cr₂O₃) scale upon exposure to high temperatures, providing long-lasting protection against oxidative degradation in air and other oxidizing atmospheres. **2. Chemical Composition (Typical % by Weight)** The composition is meticulously balanced to ensure optimal performance in thin-strip applications. | Element | Content (%) | Function | | :--- | :--- | :--- | | Nickel (Ni) | 80 | Base element, provides austenitic structure, ductility, and high-temperature stability. | | Chromium (Cr) | 20 | Imparts oxidation resistance by forming a protective, adherent Cr₂O₃ scale. | | Iron (Fe) | ≤ 1.0 | Residual impurity. | | Carbon (C) | ≤ 0.15 | Controlled to maintain formability and minimize intergranular carbide precipitation. | | Manganese (Mn) | ≤ 1.0 | Acts as a deoxidizer during the melting process. | | Silicon (Si) | ≤ 1.0 | Enhances scale adherence and further improves high-temperature resistance. | | Copper (Cu) | ≤ 0.5 | Residual impurity. | | Sulfur (S) | ≤ 0.015 | Residual impurity; kept very low to ensure hot workability. | **3. Physical & Mechanical Properties (Typical for Annealed Condition)** | Property | Value / Description | | :--- | :--- | | **Density** | 8.41 g/cm³ (0.304 lb/in³) | | **Melting Point** | Approx. 1400°C (2550°F) | | **Specific Heat Capacity** | 440 J/kg·K at 20°C | | **Thermal Conductivity** | 12.5 W/m·K at 20°C | | **Coefficient of Thermal Expansion** | 17.0 μm/m·K (20-1000°C) | | **Modulus of Elasticity** | 214 GPa at 20°C | | **Tensile Strength** | 620 - 760 MPa | | **Yield Strength (0.2% Offset)** | 250 MPa (min) | | **Elongation** | 30% (min) | | **Electrical Resistivity** | 1.09 μΩ·m at 20°C | | **Hardness (Rockwell B)** | 65 - 85 HRB | **4. Product Applications** Brightray B strip is specified for precision components where consistent gauge, surface quality, and excellent fabrication characteristics are critical. * **Electrical Resistance Heating Elements:** Used as the base material for precision-wound ribbon heaters in industrial furnaces, toasters, and hair dryers. * **Automotive & Aerospace:** Gaskets, shims, seal rings, and thin-walled components for exhaust systems and turbo machinery. * **Electronics & Electrical Components:** Spring contacts, lead frames, and other parts requiring high-temperature stability and non-magnetic properties. * **Heat Treatment Fixturing:** Precision-formed baskets, clips, and retainers for sintering and brazing processes. * **Thermal Management Systems:** Heat shields and spacers in compact electronic and power generation equipment. **5. Key Features & Benefits** * **Excellent Oxidation Resistance:** Suitable for continuous service in air at temperatures up to **1150°C**. * **Precision Gauge & Finish:** Supplied with tight thickness tolerances and a superior surface finish, ideal for stamping and fine blanking. * **Superior Formability:** The annealed strip exhibits excellent ductility for deep drawing, bending, and stamping into complex shapes without cracking. * **Consistent High-Temperature Strength:** Resists creep and sagging, maintaining dimensional stability under load at elevated temperatures. * **Good Weldability:** Can be readily welded using standard techniques such as TIG and resistance welding. * **Controlled Electrical Properties:** Consistent resistivity is crucial for predictable performance in electrical heating applications. **6. International Standards** Brightray B strip conforms to the following international standards for strip and sheet products. * **ASTM:** **ASTM B168** - Standard Specification for Seamless Nickel-Chromium-Iron Alloy Plate, Sheet, and Strip. * **UNS Number:** **N06003** * **DIN:** **DIN 17750** (Material No. 2.4869 - NiCr80/20). * **EN:** **EN 10095** (NiCr80/20 is a common industry equivalent for heat-resisting steels and alloys). * **BS:** **BS 972** (Alloy 2 - Ni80/Cr20). * **JIS:** **JIS G 4902** (Heat-resisting nickel-chromium steel plate and sheet - NCF 2). **7. Product Form & Availability** * **Form:** Strip, Precision Strip, Foil. * **Thickness Range:** Typically available from 0.05mm (0.002") up to 2.0mm (0.078"). * **Width Range:** Available in various widths, from narrow precision strips to wider coils, as per customer requirements. * **Condition:** Supplied in a solution-annealed and pickled condition, or cold-rolled to tempers (e.g., 1/4 Hard, 1/2 Hard) for spring applications. * **Surface Finish:** Standard mill finish (pickled). Bright annealed or special finishes are available upon request. --- **Disclaimer:** The information provided is typical and for reference purposes. Properties can vary based on manufacturing process, heat treatment, and strip thickness/temper. It is the user's responsibility to determine the suitability of this material for a specific application.

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 2827 gallon liquid totes Special package is available on request.