Schmolz + Bickenbach UGICHROM 4460 Duplex Chrome

Schmolz + Bickenbach UGICHROM 4460 Duplex Chrome Plated Bar Product Information -:- For detailed product information, please contact sales. -: Schmolz + Bickenbach UGICHROM 4460 Duplex Chrome Plated Bar Synonyms -:- For detailed product information, please contact sales. -:

Schmolz + Bickenbach UGICHROM 4460 Duplex Chrome Plated Bar Product Information -:- For detailed product information, please contact sales. -: # **Product Name: Schmolz + Bickenbach UGICHROM® 4460 Chrome Plated Duplex Stainless Steel Bar** ## **Introduction** Schmolz + Bickenbach UGICHROM® 4460 is a **specialty engineered bar product** combining the **high core strength and corrosion resistance of a lean duplex stainless steel** with a **hard, wear-resistant, and decorative chromium electroplate**. This composite product is designed for applications where the base material must withstand corrosive environments or provide high structural strength, while the surface requires **exceptional hardness, low friction, galling resistance, and a durable, polished finish**. It serves as a superior, integrated alternative to plating carbon or low-alloy steels for demanding mechanical and architectural applications. ## **Key Features** * **Dual Performance:** **Core:** Provides the high yield strength (≥ 500 MPa) and good stress corrosion cracking (SCC) resistance of a lean duplex stainless steel. **Surface:** Offers the extreme surface hardness (≥ 800 HV), excellent wear resistance, and anti-galling properties of hard chromium plate. * **Corrosion Protection:** The chromium layer acts as a **highly effective barrier coating**, protecting the underlying duplex steel from general atmospheric corrosion and many chemical environments. The duplex substrate provides backup corrosion resistance if the plate is damaged. * **Superior Wear & Galling Resistance:** The hard chrome surface significantly reduces adhesive wear and friction in moving or sliding contact applications, extending component life. * **Aesthetic & Functional Finish:** Provides a bright, reflective, and easy-to-clean surface that is both visually appealing for architectural uses and functionally beneficial for hydraulic/pneumatic components. --- ## **1. Core Material: Lean Duplex Stainless Steel (Typical)** The base bar is typically a lean duplex grade such as **UGIPLEX® 4362 (EN 1.4362 / UNS S32003)**. | Element (Core) | Content (%) | Note | | :---------------- | :------------ | :-------------------------------------------- | | Chromium (Cr) | 22.0 - 24.0 | Provides base corrosion resistance. | | Nickel (Ni) | 3.0 - 4.5 | Lean duplex design. | | Molybdenum (Mo) | 0.10 - 0.60 | Moderate pitting resistance. | | Nitrogen (N) | 0.08 - 0.20 | Strengthener and austenite stabilizer. | | Manganese (Mn) | 4.0 - 6.0 | Replaces nickel, aids hardenability. | | **PREN (Core)** | **≈ 25 - 28** | For reference; plate is the primary barrier. | --- ## **2. Coating Specification: Hard Chromium Electroplate** | Property / Specification | Typical Value / Requirement | | :-------------------------------- | :------------------------------------------------------- | | **Coating Material** | Electrolytic Chromium (Cr). | | **Coating Thickness** | Standard: 20 - 40 µm. Custom thicknesses available. | | **Surface Hardness** | **≥ 800 HV** (Rockwell C 68+). | | **Surface Roughness (Ra)** | As-plated: ~0.2 - 0.8 µm. Can be polished to < 0.1 µm. | | **Adhesion** | Excellent, per ISO 2819 or ASTM B571 (Bend Test). | | **Porosity** | Low porosity structure; specific tests (e.g., nitric acid test) can be specified. | | **Appearance** | Bright, metallic, reflective blue-white finish. | --- ## **3. Physical & Mechanical Properties (Composite Product)** | Property | Value / Range (Core-Dominated) | | :-------------------------------------------- | :----------------------------------- | | Core Yield Strength (Rp0.2) | **≥ 500 MPa** | | Core Tensile Strength (Rm) | 700 - 900 MPa | | Core Elongation (A) | ≥ 25 % | | **Effective Surface Hardness** | **≥ 800 HV** (Coating Property) | | Coefficient of Friction (against steel) | Low (≈ 0.15-0.20, depending on finish) | | **Key Limitation:** | **The coating is brittle and can crack under severe deformation.** | --- ## **4. Product Forms & Applications** **Available Product Forms:** * **Chrome Plated Round Bars:** Most common, in various diameters and cut lengths. * **Chrome Plated Shafts:** Precision-ground and plated for linear motion systems. * **Custom Shapes:** Limited to geometries suitable for uniform electroplating. **Primary Applications:** UGICHROM 4460 is specified where surface and core properties are simultaneously required: * **Hydraulic & Pneumatic Systems:** Piston rods, guide rods, and shafts for cylinders in corrosive or marine environments (e.g., offshore equipment, chemical plant actuators). * **Architecture, Building & Construction (ABC):** Handrails, balustrades, decorative trim, and structural accents in high-traffic indoor and outdoor settings requiring a durable, maintenance-free finish. * **Food & Beverage / Pharmaceutical:** Conveyor rods, guide rails, and machine components where cleanliness, corrosion resistance, and smooth surface are critical. * **Printing & Textile Machinery:** Rolls, guides, and tension rods requiring wear resistance and corrosion protection from inks or processing chemicals. * **Marine & Offshore:** Fixtures, fittings, and non-submerged mechanical components exposed to salt spray. --- ## **5. International Standards & Approvals** This is a proprietary finished product. Compliance involves standards for both the base material and the plating process. | Component | Standard / Specification | Notes | | :---------------- | :-------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------- | | **Base Bar** | **EN 10088-3** (for stainless steel bars) / **EN 1.4362** (material grade). | The core material typically conforms to a standard lean duplex grade. | | **Chromium Plate**| **ISO 6158** (Metallic coatings - Electrodeposited coatings of chromium for engineering purposes). | The primary international standard for engineering chrome plating. | | | **ASTM B177/B177M** (Standard Practice for Engineering Chromium Electroplating). | Common ASTM standard for thickness, adhesion, and quality. | | **Overall Product**| **Customer Drawing & Technical Specification.** | The final specification is usually a drawing with callouts for material grade, plating thickness (per ISO/ASTM), hardness, and finish. | | **Key Procurement Document** | **Schmolz + Bickenbach UGICHROM® 4460 Product Data Sheet** and **Customer-Specific Drawing/Technical Agreement.** | Defines the combined product performance guarantees. | --- ## **Critical Technical & Procurement Note** **UGICHROM 4460 is a composite material with specific limitations and handling requirements.** 1. **Procurement Specification:** Must be **explicit and visual**. Provide a detailed drawing specifying: * **Base Material:** e.g., "Lean Duplex per EN 1.4362". * **Plating Specification:** e.g., "Hard Chrome Plate to ISO 6158, thickness 30 ±5 µm, min. hardness 800 HV". * **Finish:** e.g., "Bright chrome, polished to Ra < 0.2 µm". * **Dimensional Tolerances:** Account for plating thickness buildup. Machining to final size **after plating** is often recommended for precision fits. 2. **Design Limitations:** * **Avoid Bending/Forming After Plating:** The chrome layer is brittle and will crack if the part is deformed post-plating. * **Avoid Sharp Edges and Corners:** Plating builds up unevenly on edges and may be thin or porous. Design with radii. * **Damage and Repair:** If the chrome layer is deeply scratched or damaged, it can expose the substrate to localized corrosion. Repair is difficult and typically requires stripping and re-plating. 3. **Certification:** Require a **dual certificate**: 1) MTC for the base bar (chemistry, mechanics), and 2) **Plating Certificate** confirming thickness (per lot or sample), adhesion test results, and hardness. 4. **Alternative Consideration:** For applications requiring extreme corrosion resistance **and** wear resistance without a plating layer, consider **solid duplex grades with inherent wear properties** (e.g., **FERRALIUM® 255** with 3% Cu) or **nitrided duplex steels**. UGICHROM is ideal where the specific properties of a chrome surface are required. -:- For detailed product information, please contact sales. -: Schmolz + Bickenbach UGICHROM 4460 Duplex Chrome Plated Bar Specification Dimensions Size： Diameter 20-1000 mm Length <7308 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. -: Schmolz + Bickenbach UGICHROM 4460 Duplex Chrome Plated Bar Properties -:- For detailed product information, please contact sales. -:

Applications of Schmolz + Bickenbach UGICHROM 4460 Duplex Chrome Plated Bar -:- For detailed product information, please contact sales. -: Chemical Identifiers Schmolz + Bickenbach UGICHROM 4460 Duplex Chrome Plated Bar -:- For detailed product information, please contact sales. -:

Packing of Schmolz + Bickenbach UGICHROM 4460 Duplex Chrome Plated Bar -:- 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 3779 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