Nichrome V,Nichrome V Bar(Round bar, Flat bar),UNS N06003,E FORU

British Specs:，American Specs:AMS 5676 Welding Wire AMS 5677 Welding Electrodes AMS 5682 Rods and Wire MIL-R-5031 Cl 7 MIL-E-6844 Cl7，German Specs:

**Product Introduction: Nichrome V Bar (Round Bar & Flat Bar) / UNS N06003** **Overview** Nichrome V Bar (UNS N06003) is a nickel-chromium alloy supplied in both round and flat bar forms, specifically engineered for high-temperature applications requiring excellent electrical resistance and oxidation resistance. This wrought product form combines the superior electrical characteristics of Nichrome V with enhanced mechanical properties, making it ideal for manufacturing heating elements, structural components, and various high-temperature fixtures in industrial and commercial applications. **Key Characteristics** - Excellent oxidation resistance up to 1200°C - High electrical resistivity (1.09 μΩ·m) with low temperature coefficient - Good mechanical strength retention at elevated temperatures - Superior machinability in annealed condition - Good formability and weldability - Long service life with stable electrical properties --- **Chemical Composition (Weight %)** | Element | Content (%) | Tolerance | |------------------|-----------------|----------------| | Nickel (Ni) | 78.0 - 80.0 | ±1.0% | | Chromium (Cr) | 19.0 - 21.0 | ±0.5% | | Iron (Fe) | ≤ 1.0 | - | | Silicon (Si) | ≤ 1.0 | - | | Manganese (Mn) | ≤ 1.0 | - | | Carbon (C) | ≤ 0.15 | - | | Sulfur (S) | ≤ 0.015 | - | --- **Physical Properties** | Property | Value | Condition | |-------------------------------|---------------------------|-------------------------| | Density | 8.40 g/cm³ (0.303 lb/in³) | Room Temperature | | Melting Range | 1400-1420°C (2552-2588°F) | - | | Electrical Resistivity | 1.09 μΩ·m | 20°C | | Temperature Coefficient of Resistance | 0.00013/°C | 20-1000°C | | Thermal Conductivity | 13.0 W/m·K | 20°C | | Specific Heat Capacity | 450 J/kg·K | 20°C | | Mean Coefficient of Thermal Expansion | 13.0 × 10⁻⁶/°C | 20-1000°C | | Modulus of Elasticity | 210 GPa (30.5 × 10⁶ psi) | Room Temperature | | Curie Temperature | 350°C | - | --- **Mechanical Properties (Annealed Condition)** | Temperature | Tensile Strength | Yield Strength (0.2%) | Elongation | Hardness (HV) | |------------------|------------------|----------------------|------------|---------------| | Room Temperature | 860-965 MPa | 480-550 MPa | 25-35% | 180-220 | | 500°C (932°F) | 550-620 MPa | 320-380 MPa | 28-38% | 150-180 | | 800°C (1472°F) | 240-310 MPa | 170-210 MPa | 35-45% | - | | 1000°C (1832°F) | 110-140 MPa | 80-110 MPa | 40-50% | - | --- **Product Applications** **Heating Element Manufacturing** - Support rods and hooks for heating elements - Heating element terminals and connection bars - Structural components in electric furnaces - Heating element formers and mounting systems **Industrial Furnace Components** - Heat treatment fixture components - Kiln furniture and support structures - Retort and muffle furnace parts - High-temperature fasteners and hardware **Electrical Applications** - Resistance heating elements - Electrical discharge machining electrodes - High-temperature electrical contacts - Power resistor components **Specialized Industrial Applications** - Laboratory equipment components - Semiconductor processing fixtures - Glass manufacturing equipment - Ceramic processing machinery --- **International Standards & Specifications** **ASTM Standards** - ASTM B344: Standard Specification for Drawn or Rolled Nickel-Chromium and Nickel-Chromium-Iron Alloys for Electrical Heating Elements - ASTM B166: Standard Specification for Nickel-Chromium-Iron Alloys Rod, Bar, and Wire **International Standards** - ISO 6208: Nickel and nickel alloys — Plate, sheet and strip - IEC 60172: Test procedure for determination of temperature index **European Standards** - EN 10095: Heat resisting steels and nickel alloys - DIN 17470: Resistance alloys for electrical heating **National Standards** - BS 2489: Specification for nickel-chromium alloys for electrical heating elements - JIS C 2520: Nickel-chromium resistance materials for electrical heating --- **Bar Specifications & Dimensions** **Round Bars** - Diameter Range: 5mm to 150mm - Standard Length: 3000mm to 6000mm - Diameter Tolerance: h9 (ground), h11 (turned) - Straightness: ≤1mm per meter **Flat Bars** - Thickness: 3mm to 50mm - Width: 10mm to 200mm - Standard Length: 2000mm to 4000mm - Thickness Tolerance: ±0.1mm to ±0.5mm **Available Conditions** - Hot rolled and annealed - Cold drawn and annealed - Centerless ground - Turned and polished --- **Fabrication & Processing** **Machining Parameters** - Cutting Speed: 20-35 m/min (turning) - Feed Rate: 0.1-0.3 mm/rev - Depth of Cut: 1-4 mm (roughing), 0.1-0.5 mm (finishing) - Tool Material: Carbide with positive rake angles - Cooling: Recommended for heavy machining **Heat Treatment** - Annealing Temperature: 850-950°C (1562-1742°F) - Stress Relief: 650-750°C (1202-1382°F) - Atmosphere: Air or protective atmosphere - Cooling Method: Air cooling **Welding & Joining** - TIG welding recommended - Matching filler metals - Preheating: Generally not required - Post-weld heat treatment: Optional --- **Quality Assurance** **Testing Requirements** - Chemical analysis verification - Mechanical properties testing - Electrical resistance measurement - Surface quality inspection - Dimensional accuracy verification **Certification** - Mill test certificate 3.1 per EN 10204 - Material test reports - RoHS compliance certification - Full material traceability --- **Performance Specifications** **Maximum Service Temperatures** - Continuous service in air: 1150°C (2102°F) - Intermittent service: 1200°C (2192°F) - Reducing atmospheres: 1100°C (2012°F) - Sulfur-containing atmospheres: 800°C (1472°F) **Electrical Performance** - Resistivity at 20°C: 1.09 μΩ·m - Temperature coefficient: 0.00013/°C - Maximum element temperature: 1200°C - Recommended surface load: 1.0-2.5 W/cm² --- **Note** Nichrome V Bars offer an excellent combination of high-temperature strength, oxidation resistance, and stable electrical properties. The material is particularly suitable for applications requiring both structural integrity and electrical resistance at elevated temperatures. Proper selection of bar size and heat treatment condition is essential for optimal performance in specific applications. **Disclaimer** The information provided is for reference purposes. Actual properties may vary based on manufacturing process and heat treatment. For critical applications, consult manufacturer's technical data sheets and applicable standards. All materials should be used in compliance with relevant safety codes and engineering standards.

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 3056 gallon liquid totes Special package is available on request.