Amperit 335.063 Nickel Self-fluxing Alloy HRC 60 (NiCrBSi)，1

### Technical Datasheet: Amperit® 335.063 Nickel Self-fluxing Alloy HRC 60 (NiCrBSi) **Classification:** Nickel-Chromium-Boron-Silicon Self-fluxing Alloy **Manufacturer:** Höganäs AB **Typical Hardness:** 60 HRC (After Fusing) **Product Form:** Gas-Atomized Spherical Powder --- #### 1.0 Introduction **Amperit® 335.063** is a high-performance nickel-based self-fluxing alloy powder designed for applications requiring exceptional wear resistance, high hardness, and good corrosion resistance. This NiCrBSi alloy contains carefully balanced amounts of boron and silicon that act as melting point depressants and fluxing agents, enabling the coating to form a dense, metallurgically bonded layer when heated to its fusing temperature. The alloy achieves a typical hardness of **60 HRC after proper fusing treatment**, making it ideal for severe wear applications. --- #### 2.0 Chemical Composition (Weight %) | Element | Minimum | Maximum | Typical Value | Function | |---------|---------|---------|---------------|----------| | **Nickel (Ni)** | Balance | Balance | ~70% | Matrix former | | **Chromium (Cr)** | 10.0 | 14.0 | 12.0 | Hardness & corrosion resistance | | **Boron (B)** | 2.5 | 3.5 | 3.0 | Melting point depressant, hard phase former | | **Silicon (Si)** | 3.5 | 4.5 | 4.0 | Fluxing agent, deoxidizer | | **Iron (Fe)** | - | 4.0 | 2.0 | - | | **Carbon (C)** | 0.5 | 0.9 | 0.7 | Carbide formation, hardness | | **Copper (Cu)** | - | 2.0 | 1.0 | - | | **Other Elements** | - | 1.0 | 0.5 | - | --- #### 3.0 Physical Properties | Property | Specification | Test Method | |----------|---------------|-------------| | **Theoretical Density** | 7.8 g/cm³ | ASTM B923 | | **Apparent Density** | 4.2-4.7 g/cm³ | ISO 3923-1 | | **Particle Shape** | Spherical | SEM Analysis | | **Melting Temperature** | 1000-1100°C | - | | **Fusing Temperature** | 1040-1150°C | - | | **Flow Rate** | ≤ 28 s/50g | ISO 4490 | | **Particle Size Distribution** | -45 +11 μm | Laser Diffraction | --- #### 4.0 Coating Properties After Fusing **4.1 Mechanical Properties:** - **Hardness**: 58-62 HRC - **Microhardness**: 650-750 HV₀.₃ - **Bond Strength**: >70 MPa - **Porosity**: <1% - **Density**: >98% theoretical - **Impact Resistance**: Good - **Thermal Shock Resistance**: Moderate **4.2 Microstructural Features:** - Complex chromium borides and carbides in nickel matrix - Fine, homogeneous microstructure - Excellent metallurgical bond to substrate - Minimal oxide inclusions --- #### 5.0 Application Processes **5.1 Thermal Spray Methods:** - Oxy-Acetylene Flame Spray (most common) - Plasma Spray (APS) - High Velocity Oxygen Fuel (HVOF) **5.2 Fusing Methods:** - Oxy-Acetylene Torch Fusing - Furnace Fusing (controlled atmosphere) - Induction Fusing - Laser Fusing **5.3 Recommended Parameters:** - **Flame Spray**: Neutral flame, spray distance 150-200 mm - **Fusing Temperature**: 1040-1150°C - **Fusing Time**: 2-10 minutes (depending on thickness) - **Cooling Rate**: Controlled cooling to prevent cracking --- #### 6.0 Applications **6.1 Industrial Wear Applications:** - Pump shafts and sleeves - Valve seats and stems - Hydraulic piston rods - Extruder screws and barrels - Guide rolls and rollers **6.2 Special Applications:** - Agricultural machinery components - Mining equipment parts - Steel industry rolls and guides - Paper manufacturing equipment - Plastic processing machinery **6.3 Typical Substrates:** - Carbon steels - Low alloy steels - Stainless steels - Cast iron - Nickel-based alloys --- #### 7.0 Performance Characteristics **7.1 Wear Resistance:** - Excellent abrasive wear resistance - Good adhesive wear performance - Moderate erosive wear resistance - Superior to hard chromium plating **7.2 Corrosion Resistance:** - Good resistance to neutral and alkaline solutions - Moderate resistance to acidic environments - Excellent oxidation resistance up to 800°C - Good hot corrosion resistance **7.3 Machinability:** - Can be ground with diamond or CBN wheels - Difficult to machine with conventional tools - EDM machining possible - Polishable to fine surface finish --- #### 8.0 International Standards & Certifications **Material Standards Compliance:** | Standard Category | Standard Number | Description | |-------------------|-----------------|-------------| | **Thermal Spray Powder** | ASTM B833 | Standard Specification for Thermal Spray Powder | | **Hardness Testing** | ASTM E18 | Standard Test Methods for Rockwell Hardness | | **Coating Adhesion** | ASTM C633 | Standard Test Method for Adhesion Strength | | **Chemical Analysis** | ASTM E1473 | Standard Test Methods for Chemical Analysis | | **Quality Management** | ISO 9001:2015 | Quality Management System | **Industry Specifications:** - Aerospace material specifications - Automotive industry standards - Power generation industry approvals - Heavy equipment manufacturer approvals --- #### 9.0 Health, Safety & Handling **Safety Precautions:** - Use NIOSH-approved respirator for powder handling - Ensure adequate ventilation in working areas - Wear protective gloves and safety glasses - Avoid skin contact and inhalation of powder **Storage Requirements:** - Store in original sealed containers - Keep in dry environment (<40% RH) - Storage temperature: 15-25°C - Protect from moisture and contamination **Regulatory Compliance:** - REACH compliant - RoHS compliant - OSHA standards compliant - International transportation regulations --- **Note:** Amperit® is a registered trademark of Höganäs AB. This self-fluxing alloy requires proper fusing treatment to achieve specified hardness and coating properties. Optimal results are obtained when following manufacturer's recommended procedures and parameters. Technical data may vary based on specific application conditions and substrate materials. Always consult the latest technical data sheet and material safety data sheet before use.

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 3279 gallon liquid totes Special package is available on request.