Nichrome V,Nichrome V,UNS N06003，EFORU

### **Nichrome V / UNS N06003 - Technical Datasheet** 

 --- #### **1. Overview** 

**Nichrome V** (UNS N06003) is a nickel-chromium alloy widely recognized as one of the most popular electrical resistance heating materials. This alloy combines high electrical resistance with excellent oxidation resistance at elevated temperatures, making it ideal for heating elements in various industrial and domestic applications. Its ability to form a protective chromium oxide layer at high temperatures ensures long service life and reliable performance. 

 --- #### **2. Chemical Composition (Weight %)

** The composition is optimized for electrical resistance and high-temperature performance. 

 | Element | Content (%) | Role & Benefit | 

|---------|-------------|----------------| 

| **Nickel (Ni)** | Balance | Provides base matrix and oxidation resistance | 

| **Chromium (Cr)** | 19.0 - 21.0 | Forms protective Cr₂O₃ scale for high-temperature oxidation resistance | 

| **Iron (Fe)** | 1.0 - 2.5 | Controlled for optimal electrical properties | 

| **Silicon (Si)** | 0.75 - 1.50 | Enhances oxidation resistance and scale adhesion | 

| **Manganese (Mn)** | 1.0 - 2.0 | Deoxidizer and hot workability agent | 

| **Carbon (C)** | 0.08 - 0.15 | Provides high-temperature strength | 

| **Aluminum (Al)** | 0.30 - 0.60 | Improves oxidation resistance | 

| **Copper (Cu)** | 0.50 max | Controlled impurity | 

| **Sulfur (S)** | 0.015 max | Controlled impurity | 

 --- #### **3. Physical Properties

** The physical properties highlight its electrical and thermal characteristics. 

| Property | Value | 

|----------|-------| 

| **Density** | 8.40 g/cm³ (0.303 lb/in³) | 

| **Melting Point** | 1400-1420°C (2550-2590°F) | 

| **Specific Heat (20°C)** | 450 J/kg·K | 

| **Thermal Conductivity** | 13.5 W/m·K (at 20°C) | 

| **Mean Coefficient of Thermal Expansion** | 13.5 × 10⁻⁶/°C (20-300°C) | 

| **Electrical Resistivity** | 1.08 μΩ·m | 

| **Modulus of Elasticity** | 215 GPa (31.2 × 10⁶ psi) | 

| **Magnetic Permeability** | Essentially non-magnetic | 

 --- #### **4. Mechanical Properties

** The alloy maintains good mechanical properties at elevated temperatures. 

 **Annealed Condition:** 

| Property | Value | 

|----------|-------| 

| **Tensile Strength** | 690-860 MPa (100-125 ksi) | 

| **Yield Strength (0.2% Offset)** | 345-485 MPa (50-70 ksi) | 

| **Elongation** | 25-35% | 

| **Hardness** | 85-100 HRB | 

 **Elevated Temperature Properties (1000°C/1830°F):

| Property | Value | 

|----------|-------| 

| **Tensile Strength** | 55 MPa (8 ksi) | 

| **Yield Strength** | 40 MPa (6 ksi) | 

| **Creep Strength** | 25 MPa (3.6 ksi) | 

 --- #### **5. Electrical Properties** 

Key electrical characteristics for heating applications: 

| Property | Value | 

|----------|-------| 

| **Resistivity at 20°C** | 1.08 μΩ·m | 

| **Temperature Coefficient of Resistance (0-1000°C)** | 0.00014/°C | 

| **Maximum Element Temperature** | 1200°C (2190°F) | 

| **Recommended Operating Temperature** | 1000-1150°C (1830-2100°F) | 

 --- #### **6. Product Applications** 

**Nichrome V** serves extensively in electrical heating applications: -

 **Heating Elements:**  

- Industrial furnace elements  

- Household appliance heating elements  

- Toaster and oven elements  

- Industrial process heaters 

 - **Electrical Applications:**  

- Resistors and rheostats  

- Electrical resistance wires  

- High-temperature electrical leads  

- Thermocouple extension wires 

 - **Industrial Applications:**  

- Heat treatment furnace elements  

- Ceramic kiln elements  

- Glass manufacturing equipment  

- Laboratory furnace components 

- **Consumer Products:**  

- Hair dryers and styling tools  

- Space heaters  

- Electric blankets  

- Water heater elements 

 - **Specialized Applications:**  

- Hot wire cutters for foam  

- Electronic cigarette coils  

- Scientific instruments  

- Temperature control devices 

 --- #### **7. International Standards** 

The material conforms to various international specifications: 

 | Standard | Specification | 

|----------|---------------| 

| **ASTM** | ASTM B344 - Nickel-Chromium-Iron Alloy Rod and Bar
ASTM B603 - Electrical Resistance Alloys | 

| **UNS** | UNS N06003 | 

| **AMS** | AMS 5549 | 

| **IEC** | IEC 60189 - Nickel-chromium alloys with 20% Cr | 

| **DIN** | DIN 17470 - NiCr20 | 

| **EN** | EN 10095 - NiCr20 | 

 --- #### **8. High-Temperature Performance** 

 **Oxidation Resistance:** 

- Excellent up to 1150°C (2100°F) 

- Forms protective chromium oxide scale 

- Good resistance to cyclic oxidation **Maximum Service Temperatures:** 

- Intermittent service: 1200°C (2190°F) 

- Continuous service: 1150°C (2100°F) 

- Recommended operating: 1000-1100°C (1830-2010°F) 

 --- #### **9. Fabrication Characteristics** 

 - **Forming:** Good hot and cold working properties 

- **Welding:** Suitable for resistance and TIG welding 

- **Annealing:** 1000-1150°C (1830-2100°F) in controlled atmosphere 

- **Machining:** Can be machined using standard methods 

- **Surface Preparation:** Clean surface essential for optimal performance 

 --- #### **10. Special Properties** 

 - **Electrical Resistance:** High and stable resistivity 

- **Oxidation Resistance:** Excellent high-temperature protection 

- **Thermal Stability:** Maintains properties during long-term exposure 

- **Formability:** Good for wire drawing and forming operations 

- **Longevity:** Extended service life in proper applications 

 --- #### **11. Summary** 

**Nichrome V (UNS N06003)** represents a classic nickel-chromium electrical resistance alloy that has stood the test of time in heating element applications. Its optimal balance of high electrical resistance, excellent oxidation resistance, and good high-temperature strength makes it particularly valuable for a wide range of heating applications from industrial furnaces to household appliances. The alloy's ability to form a stable protective oxide layer at elevated temperatures ensures reliable long-term performance, while its consistent electrical properties provide predictable heating characteristics. Governed by comprehensive standards including ASTM B344 and international specifications, Nichrome V continues to be a benchmark material for electrical heating applications where reliability, performance, and cost-effectiveness are essential requirements.

Packing of Nichrome V,Nichrome V,UNS N06003

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 1732 gallon liquid totes Special package is available on request.