Sandvik Santex

Sandvik Santex Spring Wire Product Information -:- For detailed product information, please contact sales. -: Sandvik Santex Spring Wire Synonyms -:- For detailed product information, please contact sales. -:

Sandvik Santex Spring Wire Product Information -:- For detailed product information, please contact sales. -: ## **Sandvik Santex® - The Ultimate Stainless Steel for High-Temperature Spring Applications** ### **Product Overview** Sandvik Santex® is a specialized **austenitic chromium-nickel steel** developed exclusively for high-temperature spring applications where relaxation resistance is paramount. Unlike standard stainless spring wires, Santex® is engineered to maintain its load-bearing capacity under continuous exposure to elevated temperatures, making it the industry benchmark for reliability in demanding thermal environments. Its superior performance stems from a carefully balanced chemical composition and proprietary thermomechanical processing. ### **Key Advantages** * **Exceptional Relaxation Resistance:** Minimal loss of spring force over time at high temperatures, far exceeding standard grades like 302 and 316. * **High-Temperature Stability:** Maintains mechanical properties and corrosion resistance under continuous or cyclic thermal exposure. * **Excellent Creep Strength:** Resists deformation under sustained load at elevated temperatures. * **Good Corrosion Resistance:** Comparable to Type 304/316 stainless steel in many environments. * **Consistent Performance:** Sandvik's controlled manufacturing ensures uniform properties and reliable spring behavior. ### **Chemical Composition (Typical, wt%)** The composition is optimized for stable austenitic structure and precipitation strengthening at high temperatures. | Element | Content (%) | Element | Content (%) | |---------|-------------|---------|-------------| | Chromium (Cr) | 16.0-18.0 | Nickel (Ni) | 15.0-17.0 | | Carbon (C) | 0.08-0.14 | Manganese (Mn) | ≤ 2.0 | | Silicon (Si) | 1.5-2.5 | Molybdenum (Mo) | ≤ 0.5 | | Phosphorus (P) | ≤ 0.045 | Sulfur (S) | ≤ 0.03 | | Boron (B) | 0.003-0.008 | Iron (Fe) | Balance | *Note: The controlled addition of carbon, silicon, and boron creates fine precipitates that enhance high-temperature strength.* ### **Physical & Mechanical Properties** #### **Room Temperature Properties (Cold Drawn & Aged Condition):** * **Density:** 7.9 g/cm³ * **Modulus of Elasticity:** 195 GPa * **Tensile Strength:** 1800-2100 MPa (depending on diameter) * **Yield Strength (0.2% offset):** 1600-1850 MPa * **Elongation:** 2-5% #### **High-Temperature Performance:** * **Maximum Continuous Service Temperature:** **Up to 400°C (750°F)** * **Relaxation Resistance:** Significantly better than Type 316 at 300-400°C * **Creep Resistance:** Excellent up to 425°C (800°F) * **Thermal Expansion Coefficient:** 16.5 × 10⁻⁶/K (20-400°C) #### **Comparative Performance Data:** At 300°C (570°F) after 1000 hours under initial stress of 500 MPa: * **Santex®:** ~15-20% load loss * **Type 316:** ~40-50% load loss * **Type 302:** ~60-70% load loss ### **International Standards & Approvals** Sandvik Santex® is recognized under multiple international specifications: * **UNS Designation:** S30600 (similar grade) * **EN Standard:** 1.4566 (X6CrNiNb17-12) * **DIN Standard:** 1.4566 * **ASTM:** A313 (Spring Wire) * **ISO:** 6931-1: Stainless steel spring wire * **AECMA/EN:** 2952 (Aerospace series) * **Customer-Specific Approvals:** Widely approved by automotive, aerospace, and industrial OEMs ### **Product Applications** Santex® is specifically designed for spring applications requiring long-term stability at elevated temperatures: #### **Automotive Industry:** * Exhaust system springs (hangers, bypass valves, EGR systems) * Turbocharger actuator springs * Engine valve springs for high-performance applications * Brake system components #### **Industrial & Process Equipment:** * Spring-loaded safety valves and pressure relief devices * High-temperature filters and separators * Furnace and oven components * Thermal processing equipment springs #### **Aerospace & Defense:** * Engine control system springs * Thermal management system components * Auxiliary power unit (APU) springs #### **Electrical & Electronics:** * Circuit breaker contacts and mechanisms * Thermal cut-off devices * High-temperature electrical contacts #### **General Engineering:** * Constant load applications in heated environments * Sealing springs for high-temperature flanges * Instrumentation springs in heated systems ### **Processing & Fabrication Notes** * **Spring Forming:** Can be coiled on standard spring-making equipment * **Heat Treatment:** Typically supplied in pre-aged condition; additional stress relief may be recommended * **Welding:** Possible with appropriate techniques but may affect spring properties locally * **Surface Finish:** Available bright or with special coatings for enhanced performance ### **Availability & Specifications** * **Diameter Range:** 0.10 mm to 6.0 mm (standard range) * **Temper:** Spring temper (cold drawn and aged) * **Surface Condition:** Bright, clean finish suitable for most applications * **Packaging:** On spools, coils, or straight lengths as required --- **Technical Advisory:** For mission-critical applications, especially those involving extreme temperatures, corrosive environments, or complex loading conditions, consult with Sandvik materials engineers. They can provide application-specific guidance, detailed technical data sheets, and processing recommendations to ensure optimal performance of Santex® in your specific application. **Disclaimer:** The information provided is for general reference. Properties may vary with specific manufacturing processes and wire dimensions. Always refer to the latest Sandvik technical documentation for design purposes. -:- For detailed product information, please contact sales. -: Sandvik Santex Spring Wire Specification Dimensions Size： Diameter 20-1000 mm Length <7439 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 Santex Spring Wire Properties -:- For detailed product information, please contact sales. -:

Applications of Sandvik Santex Spring Wire -:- For detailed product information, please contact sales. -: Chemical Identifiers Sandvik Santex Spring Wire -:- For detailed product information, please contact sales. -:

Packing of Sandvik Santex Spring 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 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 3910 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