Sandvik,20C Shock Absorber Strip Steel Wire

Sandvik 20C Shock Absorber Strip Steel Wire Product Information -:- For detailed product information, please contact sales. -: Sandvik 20C Shock Absorber Strip Steel Wire Synonyms -:- For detailed product information, please contact sales. -:

Sandvik 20C Shock Absorber Strip Steel Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: Sandvik 20C Shock Absorber Strip Steel** **1. Product Overview** Sandvik 20C is a high-carbon, chromium-alloyed, cold-rolled strip steel specifically engineered for the manufacture of high-performance **shock absorber piston rods** and other critical suspension components. Renowned for its exceptional strength-to-weight ratio, superior fatigue resistance, and excellent surface integrity, it is the material of choice for demanding automotive and industrial suspension systems where durability, reliability, and precision are paramount. **2. Key Features & Benefits** * **High Strength & Hardness:** Provides the necessary mechanical strength to withstand high cyclical loads and pressures within the shock absorber. * **Superior Fatigue Resistance:** Engineered to endure millions of stress cycles without failure, ensuring long service life and safety. * **Excellent Surface Finish & Dimensional Accuracy:** Essential for maintaining a perfect seal with the piston rod guide and seal, preventing oil leakage and ensuring consistent damping performance. * **Good Hardenability:** Responds reliably to heat treatment (quenching and tempering), allowing for tailored mechanical properties. * **Machinability & Grindability:** Offers good machinability in the annealed state and can be precision ground after hardening to achieve the ultra-smooth, mirror-like finish required for piston rods. * **Consistency:** Sandvik's stringent process control guarantees batch-to-batch uniformity in chemistry, microstructure, and properties. **3. Chemical Composition (Typical Analysis)** Sandvik 20C is a high-carbon chromium steel. The typical chemical composition is as follows: | Element | Carbon (C) | Chromium (Cr) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | **Content (%)** | 0.95 - 1.10 | 0.40 - 0.60 | ≤ 0.35 | ≤ 0.40 | ≤ 0.025 | ≤ 0.020 | *Note: This is a representative analysis; specific heats may vary within Sandvik's defined internal specifications to optimize performance for shock absorber applications.* **4. Physical & Mechanical Properties** * **Standard Delivery Condition:** Typically supplied in a **spheroidized annealed (soft annealed)** condition for optimal cold forming and machining. * **Hardness (Annealed):** 190 - 230 HBW * **Tensile Strength (Annealed):** ~ 600 - 750 MPa * **Final Application Condition:** After customer machining and **heat treatment (quenching & tempering)**: * **Hardness (Hardened & Tempered):** 50 - 60 HRC (typical target for piston rods). * **Tensile Strength:** 1650 - 2150 MPa (approx., dependent on tempering temperature). * **Yield Strength:** > 1500 MPa. * **Core Toughness:** Maintains sufficient toughness at high hardness to resist impact and brittle fracture. * **Surface Finish (Final Rod):** Capable of achieving a super-finished, mirror-like surface (e.g., Ra < 0.1 µm) after grinding and polishing, which is critical for seal life and friction control. **5. Standard Specifications & Dimensional Tolerances** Sandvik 20C for shock absorbers is produced to meet stringent automotive and industry standards. * **Common International & Industry Standards:** * **SAE J403:** Chemical composition for carbon steels (similar to **SAE 1095** modified with Cr). * **DIN EN ISO 4957:** Tool steels (similar to grade **100Cr6 / 1.3505**). * **ASTM A682:** Standard Specification for Steel, Strip, High-Carbon, Cold-Rolled. * **Common Automaker Specifications:** Meets or exceeds the requirements of various OEM material specifications for suspension components. * **Common Available Forms:** Precision cold-rolled strip in coils or straightened and cut lengths. * **Typical Dimensions:** * **Thickness:** 2.0 mm to 8.0 mm (custom ranges possible). * **Width:** 20 mm to 150 mm (standard), depending on rod diameter. * **Tolerances:** Supplied to tight **precision tolerances** for thickness (e.g., ±0.02 mm), width, flatness, and edge condition as per **DIN EN 10131** or customer-specific drawing requirements. **6. Primary Applications** Sandvik 20C is exclusively used for high-stress, precision automotive and industrial components, primarily: * **Monotube & Twin-Tube Shock Absorber Piston Rods:** The core material for rods in passenger cars, motorcycles, commercial vehicles, and racing applications. * **Strut Rods:** For MacPherson strut assemblies. * **Other Precision Suspension Components:** Such as guide pins, certain valve parts, and other hardened, ground shafts within the damping system. **7. Processing & Heat Treatment Guidelines** 1. **Machining:** Components are machined (turned, milled) in the supplied soft-annealed condition. 2. **Heat Treatment:** Machined parts are **austenitized, quenched, and tempered** to achieve the final high hardness and strength. Care must be taken to prevent decarburization. 3. **Finishing:** The rods undergo **centerless grinding** and **superfinishing/polishing** to achieve the final diameter and mirror-like surface finish. 4. **Surface Coating:** Often followed by a **chromium plating** or advanced **Physical Vapor Deposition (PVD)** coating (e.g., chromium nitride) for extreme corrosion and wear resistance. **8. Disclaimer** This information is provided for technical reference only. Properties are typical and may vary based on processing. It is the responsibility of the user to validate the material's suitability for their specific application, equipment, and processes. For the most current and detailed specifications, processing guides, or availability, consult the official **Sandvik Materials Technology** documentation or contact their technical support team. --- -:- For detailed product information, please contact sales. -: Sandvik 20C Shock Absorber Strip Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7449 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. -: Sandvik 20C Shock Absorber Strip Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Sandvik 20C Shock Absorber Strip Steel Wire -:- For detailed product information, please contact sales. -: Chemical Identifiers Sandvik 20C Shock Absorber Strip Steel Wire -:- For detailed product information, please contact sales. -:

Packing of Sandvik 20C Shock Absorber Strip Steel Wire -:- 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 Wire 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 3920 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