Latrobe LSS™ Mandrel Bar Mandrel Bar Steel

Latrobe LSS™ Mandrel Bar Mandrel Bar Steel Product Information -:- For detailed product information, please contact sales. -: Latrobe LSS™ Mandrel Bar Mandrel Bar Steel Synonyms -:- For detailed product information, please contact sales. -:

Latrobe LSS™ Mandrel Bar Mandrel Bar Steel Product Information -:- For detailed product information, please contact sales. -: # **Latrobe LSS™ Mandrel Bar Steel** ## **Premium Special-Purpose Steel for High-Performance Mandrel Applications** Latrobe LSS™ Mandrel Bar Steel represents a specialized category of engineered steel specifically formulated for mandrel applications in tube and pipe manufacturing, extrusion processes, and other demanding industrial applications requiring exceptional surface quality, dimensional precision, and mechanical reliability. This proprietary steel is engineered to withstand the severe thermal, mechanical, and frictional stresses encountered in modern tube-making and forming operations while maintaining critical dimensional stability and surface integrity. --- ### **Key Features & Benefits** - **Exceptional Surface Quality**: Precision finished surfaces with controlled roughness and minimal defects - **Superior Dimensional Accuracy**: Tight tolerances for critical mandrel applications - **High-Temperature Strength**: Maintains mechanical properties at elevated operating temperatures - **Excellent Wear Resistance**: Optimized for resistance to abrasive wear and surface degradation - **Good Thermal Fatigue Resistance**: Withstands cyclic heating and cooling in production environments - **Enhanced Straightness**: Premium straightness tolerances for precision applications - **Controlled Microstructure**: Engineered for optimal combination of hardness, toughness, and machinability --- ### **Chemical Composition (Typical %, Proprietary Mandrel Steel Formula)** | Element | Carbon (C) | Chromium (Cr) | Molybdenum (Mo) | Vanadium (V) | Silicon (Si) | Manganese (Mn) | Special Additions | |---------|------------|---------------|-----------------|--------------|--------------|----------------|-------------------| | **Content** | 0.35 - 0.50 | 0.80 - 1.50 | 0.40 - 1.00 | 0.10 - 0.30 | 0.20 - 0.60 | 0.50 - 1.00 | Micro-alloying elements for enhanced properties | *Note: LSS™ Mandrel Bar Steel features a carefully balanced composition optimized for mandrel applications. The specific alloy combination provides the necessary hardenability, wear resistance, and toughness required for demanding tube and pipe manufacturing processes. Composition may be adjusted based on specific application requirements and customer specifications.* --- ### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 7.85 g/cm³ | | **Thermal Conductivity** | 40-45 W/m·K at 20°C | | **Specific Heat Capacity** | 0.46 kJ/kg·K at 20°C | | **Coefficient of Thermal Expansion** | 11.5 × 10⁻⁶/K (20-400°C) | | **Typical Hardness Ranges** | 28-42 HRC (depending on application requirements) | | **Tensile Strength** | 900-1,400 MPa (depending on hardness) | | **Yield Strength** | 750-1,200 MPa (depending on hardness) | | **Modulus of Elasticity** | 205-210 GPa | | **Impact Toughness** | Good to Very Good (application dependent) | | **Surface Roughness** | Ra ≤ 0.8 μm (typically 0.4-0.6 μm) | | **Straightness Tolerance** | Typically ≤ 0.5 mm per meter | --- ### **Heat Treatment Capabilities** #### **Available Conditions** LSS™ Mandrel Bar Steel can be supplied in various conditions to meet specific application requirements: 1. **Annealed Condition** - **Hardness**: 180-220 HB - **Purpose**: For subsequent machining and heat treatment - **Applications**: Custom mandrel fabrication 2. **Pre-Hardened Condition** - **Hardness**: 28-35 HRC (standard range) - **Purpose**: Ready for final machining and use - **Applications**: Standard mandrel applications 3. **Fully Hardened and Tempered** - **Hardness**: 35-42 HRC (premium range) - **Purpose**: Maximum wear resistance and strength - **Applications**: High-performance and specialized applications #### **Custom Heat Treatment** - **Surface Hardening**: Selective hardening options available - **Nitriding**: Gas or plasma nitriding for enhanced surface properties - **Induction Hardening**: For specific wear areas - **Stress Relieving**: Specialized treatments for dimensional stability --- ### **International Standards & Specifications** | Standard | Application | Notes | |----------|-------------|-------| | **Custom Specifications** | Tube & Pipe Manufacturing | Tailored to mill requirements | | **ASTM** | Various applicable standards | Modified for mandrel applications | | **DIN** | Special quality standards | German precision standards | | **Customer Specifications** | OEM Requirements | Major tube producer specifications | | **Quality Standards** | ISO 9001 / IATF 16949 | Manufacturing quality systems | --- ### **Typical Applications** #### **Tube and Pipe Manufacturing** - **Seamless Tube Mandrels**: For pilger mills, extrusion, and drawing processes - **Welded Tube Mandrels**: For sizing and shaping operations - **Pipe Forming Mandrels**: For longitudinal and spiral welded pipe - **Tube Drawing Mandrels**: For precision diameter control - **Sizing Mandrels**: For final diameter and roundness adjustment #### **Extrusion Applications** - **Metal Extrusion Mandrels**: For aluminum, copper, and specialty alloys - **Profile Extrusion Tools**: For complex cross-section production - **Hollow Extrusion Mandrels**: For tube and profile manufacturing #### **Specialized Forming Applications** - **Bending Mandrels**: For tube bending and forming operations - **Swaging Mandrels**: For diameter reduction and shaping - **Expanding Mandrels**: For tube enlargement and sizing - **Coiling Mandrels**: For spring and coil production #### **Industrial Applications** - **Roller Mandrels**: For rolling mill applications - **Guide Mandrels**: For material handling and processing - **Support Mandrels**: For machining and fabrication fixtures - **Alignment Mandrels**: For precision assembly operations --- ### **Manufacturing & Quality Standards** #### **Material Production** - **Melting Practice**: Electric arc furnace with ladle refinement - **Casting**: Continuous casting for improved homogeneity - **Hot Working**: Controlled rolling for optimized microstructure - **Heat Treatment**: Precision controlled furnaces with atmosphere control - **Final Processing**: Centerless grinding and polishing to specification #### **Dimensional Tolerances** - **Diameter Tolerance**: Typically h7/h8 (ISO standards) - **Straightness**: ≤ 0.5 mm per meter (enhanced options available) - **Surface Finish**: Ra 0.4-0.8 μm standard (finer finishes available) - **Concentricity**: Premium grade with minimal runout - **Length Tolerance**: Customized to application requirements #### **Surface Quality Requirements** - **Freedom from Defects**: No cracks, seams, or inclusion-related defects - **Surface Integrity**: Minimal decarburization and oxidation - **Consistency**: Uniform surface characteristics along entire length - **Cleanliness**: Free from contaminants and processing residues --- ### **Available Product Forms** | Form | Standard Sizes | Condition | Surface Finish | Special Features | |------|---------------|-----------|----------------|------------------| | **Round Bars** | 20-300mm diameter | Various | Ground & Polished | Centerless ground | | **Precision Ground Bars** | 10-150mm diameter | Pre-Hardened | Super Finished | Enhanced straightness | | **Custom Profiles** | Customer specifications | Application Specific | As Required | Special geometries | | **Tapered Mandrels** | Custom dimensions | Heat Treated | Precision Ground | Gradual diameter change | | **Stepped Mandrels** | Multi-diameter | Application Specific | Machined | Multiple diameter sections | --- ### **Technical Comparison** | Property | LSS™ Mandrel Steel | Standard Alloy Steel | Tool Steel | Stainless Steel | |----------|---------------------|---------------------|-----------|----------------| | **Surface Quality** | **Premium** | Good | Very Good | Excellent | | **Wear Resistance** | **Optimized** | Standard | High | Moderate | | **Machinability** | Good | **Excellent** | Fair | Fair to Good | | **Cost Efficiency** | **Excellent** | **Excellent** | High | High | | **Application Focus** | **Mandrel Specific** | General Purpose | Tooling | Corrosion Resistance | | **Temperature Resistance** | Good | Good | **Excellent** | Good | --- ### **Quality Assurance & Testing** #### **Standard Testing Protocol** 1. **Chemical Analysis**: Full spectroscopic analysis with verification 2. **Mechanical Testing**: Tensile, yield, hardness, and impact testing 3. **Dimensional Verification**: Complete dimensional inspection 4. **Surface Inspection**: Visual and instrumental surface analysis 5. **Non-Destructive Testing**: Ultrasonic and magnetic particle inspection 6. **Metallurgical Analysis**: Microstructure and inclusion assessment #### **Specialized Testing (Available)** - **Wear Testing**: Simulated service wear evaluation - **Thermal Cycling**: Resistance to thermal fatigue testing - **Surface Roughness**: Detailed topographic analysis - **Straightness Verification**: Laser-based alignment testing --- ### **Economic Considerations** 1. **Material Cost**: Competitive pricing with premium quality 2. **Service Life**: Extended mandrel life reduces replacement frequency 3. **Production Efficiency**: Improved surface quality reduces friction and wear 4. **Maintenance Costs**: Reduced downtime for mandrel replacement 5. **Total Cost of Ownership**: Optimized for maximum value in mandrel applications 6. **Customization Value**: Tailored solutions for specific application requirements --- ### **Technical Support & Services** Latrobe provides comprehensive technical support for LSS™ Mandrel Bar Steel: - **Application Engineering**: Guidance on material selection and design - **Manufacturing Support**: Assistance with machining and processing - **Failure Analysis**: Investigation of service-related issues - **Custom Development**: Tailored solutions for specific applications - **Field Support**: On-site technical assistance for production issues - **Training**: Technical education on mandrel materials and applications --- **Select Latrobe LSS™ Mandrel Bar Steel** for applications requiring precision, reliability, and performance in demanding mandrel applications. This specialized steel offers the optimal combination of mechanical properties, dimensional accuracy, and surface quality necessary for successful tube and pipe manufacturing, extrusion processes, and other industrial applications. Whether for seamless tube production, welded pipe manufacturing, or specialized forming operations, LSS™ Mandrel Bar Steel provides the material performance foundation for efficient, reliable production processes. When mandrel quality directly impacts product quality, production efficiency, and operational costs, LSS™ Mandrel Bar Steel delivers the engineered solution that meets the exacting requirements of modern industrial manufacturing. -:- For detailed product information, please contact sales. -: Latrobe LSS™ Mandrel Bar Mandrel Bar Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7180 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: Latrobe LSS™ Mandrel Bar Mandrel Bar Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Latrobe LSS™ Mandrel Bar Mandrel Bar Steel -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe LSS™ Mandrel Bar Mandrel Bar Steel -:- For detailed product information, please contact sales. -:

Packing of Latrobe LSS™ Mandrel Bar Mandrel Bar Steel -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: 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 3651 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition