Alloy 260， Other/Similar Specs，UNS N03260,E FORU

British Specs:，American Specs: AMS 5890 Bar and Forgings，German Specs:

**Technical Datasheet: Alloy 260 (Cartridge Brass) - Other Forms & Similar Specifications** **UNS Designation:** UNS C26000 --- ### **1. Overview** Alloy 260 (70/30 Brass) is a single-phase alpha brass renowned for its excellent cold workability, ductility, and balanced mechanical properties. While commonly available in rods, sheets, tubes, and forgings, it also conforms to specialized specifications for unique applications. This document covers alternative forms, analogous international designations, and supplementary technical details to support material selection and cross-standard referencing. --- ### **2. Chemical Composition (Weight %)** | Element | UNS C26000 | EN CW508L | DIN CuZn30 | JIS C2600 | |---------|------------|-----------|------------|-----------| | Cu | 68.5–71.5 | 68.5–71.5 | 68.5–71.5 | 68.5–71.5 | | Zn | Remainder | Remainder | Remainder | Remainder | | Fe | ≤0.05 | ≤0.05 | ≤0.05 | ≤0.05 | | Pb | ≤0.07 | ≤0.05 | ≤0.05 | ≤0.07 | | Others | ≤0.15 | ≤0.15 | ≤0.15 | ≤0.15 | --- ### **3. Physical Properties** - **Density:** 8.53 g/cm³ - **Melting Range:** 915–955°C (Liquidus: 955°C) - **Thermal Conductivity:** 120 W/m·K - **Electrical Conductivity:** 28% IACS - **Coefficient of Thermal Expansion:** 20.2 × 10⁻⁶/°C (20–300°C) - **Modulus of Elasticity:** 110 GPa --- ### **4. Mechanical Properties (Annealed Condition)** | Property | Value | |----------|-------| | Tensile Strength | 325–410 MPa | | Yield Strength (0.5% Offset) | 75–145 MPa | | Elongation | 55–65% | | Hardness (Rockwell B) | 40–60 HRB | --- ### **5. International Standards & Cross-References** #### **5.1. Wrought Product Standards** - **ASTM:** B36 (Sheet/Strip), B135 (Tube), B16 (Rod/Bar) - **EN:** 1652 (Sheet/Strip), 12164 (Rod), 12449 (Tube) - **DIN:** 17660 (CuZn30), 1785 (Spring Strip) - **JIS:** H3100 (Sheet/Strip), H3300 (Tube) - **ISO:** 426-1 (Sheet), 426-3 (Strip) #### **5.2. Equivalent Alloy Designations** | Region/Standard | Designation | |-----------------|-------------| | **Europe (EN)** | CW508L | | **Germany (DIN)** | CuZn30, CZ106 | | **Japan (JIS)** | C2600 | | **China (GB)** | H68 | | **ISO** | CuZn30 | --- ### **6. Other Product Forms & Specifications** #### **6.1. Wire** - **Standards:** ASTM B134, EN 12166 - **Applications:** Electrical terminals, fasteners, springs, crafts. #### **6.2. Custom Extruded Shapes** - **Standards:** ASTM B455 (Lead-Free Brass Extrusions) - **Applications:** Architectural moldings, structural components. #### **6.3. Cast Equivalents** - **Alloy C85800 (Leaded Red Brass):** Used for cast fittings where machinability is prioritized. - **Alloy C87800 (Sand-Cast Brass):** Suitable for ornamental and low-stress components. --- ### **7. Applications of Alternative Forms** - **Wire:** Springs, connectors, jewelry, and cold-headed fasteners. - **Custom Profiles:** Architectural trim, marine hardware, and heat exchanger fins. - **Cast Parts:** Decorative hardware, plumbing fittings (non-potable water). --- ### **8. Fabrication Notes** - **Joining:** Excellent solderability and brazability; TIG/GTAW welding is feasible with pre-heating. - **Machining:** Superior chip formation and surface finish; use sharp tools and coolants. - **Corrosion Resistance:** Avoid acidic/alkaline environments to prevent dezincification. --- ### **9. Advantages Over Similar Alloys** | Alloy | Zn Content | Key Difference vs. C26000 | |-------|------------|---------------------------| | **C26800 (Yellow Brass)** | 32–36% | Lower ductility and cold workability | | **C27000 (65/35 Brass)** | 35% | Reduced formability and corrosion resistance | | **C22000 (Commercial Bronze)** | 10% | Higher cost, lower strength | --- ### **10. Disclaimer** This datasheet summarizes typical properties and global standards for Alloy 260. Specific values may vary by manufacturer, processing history, and product form. Verify compliance with relevant specifications and conduct application-specific testing for critical uses. Consult material suppliers for tailored technical support.

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 2817 gallon liquid totes Special package is available on request.