Stainless steel has become an indispensable material in modern industry due to its excellent corrosion resistance, high strength, and aesthetics. Among them, stamped stainless steel sheet are widely used in automobiles, home appliances, construction and other fields due to their good formability and wide applicability. This article will introduce in detail its characteristics and performance, types and steel grades, application scenarios, and production processes.
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（1）、 Characteristics and performance of stamped stainless steel plates
1、Material characteristics
Corrosion resistance: Stainless steel contains alloy elements such as chromium (Cr) and nickel (Ni), and a dense oxide film is formed on the surface, which can resist corrosion by media such as acids, alkalis, and salts.
High strength and toughness: The stamping process requires the material to have both plasticity and strength. Stainless steel can meet different stamping requirements after cold rolling or heat treatment.
Surface finish: The surface of stainless steel plates can be treated by polishing, frosting, etc. to meet decorative needs.
2、Process advantages
Good formability: Stainless steel plates have high ductility and are suitable for stamping of complex shapes (such as stretching and bending).
Dimensional stability: Small rebound after stamping, and high precision of finished products.
Welding and polishing compatibility: Stamped parts can be further welded or polished to expand application scenarios.
3、Adaptability to special needs
Some steel grades (such as 316L) have high temperature resistance and are suitable for high temperature environments; duplex stainless steel has both high strength and corrosion resistance.
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（2）、 Types of stamped stainless steel plates and commonly used steel grades
Based on metallographic structure and chemical composition, stainless steel can be divided into the following categories:
| type | Typical steel grades | Features | Applicable scenarios |
| Austenitic stainless steel | 304、316L | High nickel content, non-magnetic, excellent corrosion resistance and excellent formability. | Food equipment, medical equipment, decorative parts |
| Ferritic stainless steel | 430、409L | Low nickel and low carbon, magnetic, low cost, and strong resistance to stress corrosion. | Automobile exhaust pipe, home appliance housing |
| Martensitic stainless steel | 410、420 | High carbon content, can be hardened by heat treatment, and has good wear resistance. | Cutting tools, mechanical parts |
| Duplex stainless steel | 2205、2507 | Austenite + ferrite dual phase structure, high strength and resistance to chloride corrosion. | Marine engineering, chemical equipment |
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（3）、Application areas of stamped stainless steel sheet
1、Automobile manufacturing
Exhaust system: 409L/439 ferritic stainless steel is used for exhaust pipe stamping parts, which is resistant to high temperature oxidation.
Structural parts: High-strength dual-phase steel is used for door anti-collision beams, which takes into account both lightweight and safety.
2、Home appliance industry
Washing machine inner drum: 304 stainless steel is stamped and formed, which is resistant to water erosion and has a smooth surface.
Kitchen appliances: 430 stainless steel is used for range hood panels, which is easy to clean and cost-controlled.
3、Architectural decoration
Curtain wall and elevator trim: 304/316 stainless steel is stamped and etched, which is both beautiful and durable.
4、Medical and food equipment
Surgical instruments: 316L stainless steel stamping parts are resistant to physiological corrosion and meet hygiene standards.
Food containers: Stamped 304 stainless steel tanks meet food safety requirements.
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（4）、 Production process of stamped stainless steel sheet
The production process of stamped stainless steel plate includes the following key steps:
1、Raw material preparation
Steelmaking and continuous casting: Smelting through electric furnace or AOD furnace, controlling the proportion of elements such as C, Cr, Ni.
Hot rolling and cold rolling: After hot rolling into coils, cold rolling to the target thickness (usually 0.3~3.0mm) to improve surface finish.
2、Pre-stamping treatment
Slitting and cutting: Cut the plate according to size requirements.
Lubrication treatment: Apply stamping oil to reduce mold wear and material scratches.
3、Stamping forming
Mold design: Design multi-station continuous mold or single-process mold according to the shape of the part, and control the gap (usually 8%~12% of the plate thickness).
Stamping process: Forming through steps such as blanking, stretching, and flanging, the stamping speed (such as 20~40 times/minute) and pressure need to be controlled.
4、Post-processing and inspection
Annealing and pickling: eliminate stamping stress and restore material plasticity (annealing temperature: austenitic steel 1010~1120℃).
Surface treatment: electrolytic polishing, PVD coating, etc. to improve appearance or functionality.
Quality inspection: ensure that the size and corrosion resistance meet the standards through three-coordinate measurement, salt spray test, etc.
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（5）、 Future Development Trends
High-strength and lightweight: Develop higher-strength duplex stainless steel to replace traditional steel to reduce weight.
Green process: Promote oil-free stamping technology to reduce the environmental pressure of the cleaning process.
Intelligent production: Combine AI technology to optimize mold design and stamping parameters to improve yield rate.
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Conclusion
Stamped stainless steel sheets continue to promote the upgrading of the manufacturing industry with their balance of performance and process. From material selection to production optimization, innovation in each link will further expand its application boundaries and meet the diverse needs of future industries.
Post time: Feb-26-2025