321 Stainless Steel Sheet Plate Laser Cutting Customized OEM Metal Machine Parts
Tianjin Emerson Metal Steel Products Co.,ltd is one factory can manufacture all types laser cutting machine parts, thin type, thick type, simple type, complicated types all can make by the drawings.
Tianjin Emerson Metal Makes 321 Stainless Steel Sheet Plate Laser Cutting Customized OEM Metal Machine Parts
Tianjin Emerson Metal Steel Products Co., Ltd. is proud to present its 321 Stainless Steel Sheet Plate Laser Cutting Customized OEM Metal Machine Parts, a specialized solution designed to meet the rigorous demands of high-temperature and corrosive industrial environments. As a factory equipped with advanced manufacturing facilities—including 20000V laser cutting machines, bending machines, welding equipment, and CNC machining centers—we combine technical expertise with precision engineering to deliver customized parts that leverage the unique properties of 321 stainless steel.
321 stainless steel is a titanium-stabilized austenitic grade, formulated to address the challenges of intergranular corrosion in high-temperature applications. Unlike standard austenitic stainless steels, 321 contains titanium (Ti) in a proportion of 5 times the carbon content (minimum 0.7%), which binds with carbon to prevent the formation of chromium carbides at grain boundaries during welding or elevated temperature exposure. This stabilization ensures exceptional resistance to grain boundary corrosion, making 321 ideal for applications where heat treatment is impractical or impossible.
Our fabrication process is tailored to maximize the performance of 321 stainless steel. Using high-powered laser cutting technology, we achieve intricate shapes and tight tolerances, ensuring each part adheres to your exact specifications—whether for thin sheets, thick plates, simple components, or complex geometries. Complemented by bending, welding, polishing, and CNC machining services, we transform raw 321 stainless steel into fully finished machine parts that meet the most stringent industry standards. Our OEM customization service thrives on flexibility: we work directly from your drawings, samples, or design requirements to create parts that integrate seamlessly into your equipment or systems.
With a comprehensive inventory of stainless steel grades—including 304, 316L, 310S, and 321—we maintain strict material control, ensuring consistent quality from sourcing to production. Our commitment to transparency means clients are welcome to visit our factory to inspect manufacturing processes, and our dedicated after-sales support ensures ongoing assistance, from technical queries to troubleshooting. For industries requiring heat resistance, corrosion resilience, and reliable performance, our 321 stainless steel parts offer a superior, cost-effective solution.
High resistance to intergranular corrosion, excellent heat resistance, good weldability, stable performance in elevated temperatures, formability suitable for complex fabrication
All shapes (thin/thick, simple/complex) based on client drawings or specifications
Application Scenarios
321 stainless steel parts excel in environments where high temperatures, corrosive substances, and resistance to intergranular corrosion are critical, making them indispensable in the following industries:
Chemical Processing: In chemical plants, 321 stainless steel is used for outdoor machinery, heat exchangers, and chemical transport vehicles. Its resistance to grain boundary corrosion ensures durability when exposed to acids, solvents, and high-temperature chemical reactions, outperforming non-stabilized grades in long-term reliability.
Petroleum and Coal Industries: Equipment operating in petroleum refineries and coal processing facilities—such as heating furnace components, boiler shells, and pressure vessels—relies on 321 stainless steel. Its ability to withstand elevated temperatures (up to 800°C in continuous service) and resist corrosion from hydrocarbons and impurities makes it a trusted choice.
Power Generation: 321 stainless steel parts are integral to boiler systems, heat exchangers, and steam turbines in power plants. Their heat resistance and corrosion resilience prevent degradation from high-pressure steam and thermal cycling, ensuring efficient energy production.
Automotive and Transportation: Diesel engine silencing components benefit from 321’s heat resistance, as they endure extreme temperatures from exhaust gases. Additionally, chemical transport vehicles use 321 parts to safely contain and transport corrosive materials.
Construction and Infrastructure: Heat-resistant building materials, such as expansion joints in industrial structures, utilize 321 stainless steel. Its formability allows for the creation of flexible components that absorb thermal expansion, while its corrosion resistance ensures longevity in outdoor or harsh environments.
Aerospace and Defense: In aerospace applications, 321 is used for components in jet engines and exhaust systems, where high temperatures and structural integrity are paramount. Its stability under thermal stress makes it suitable for critical parts requiring consistent performance.
Our Advantages
Choosing our 321 Stainless Steel Sheet Plate Laser Cutting Customized OEM Parts offers compelling benefits for your projects:
Advanced Equipment: Our 20000V laser cutting machines and CNC equipment ensure precision and efficiency, even for complex designs.
Material Expertise: We specialize in 321 and other stainless steel grades, providing guidance on material selection to match your application’s needs.
Stability in Extreme Conditions: 321’s unique properties ensure parts perform reliably in high-temperature, corrosive, or welded environments—reducing maintenance and replacement costs.
Customization Flexibility: From prototyping to mass production, we adapt to your drawings, specifications, or samples, ensuring a perfect fit for your equipment.
Quality Assurance: Strict material testing, in-process inspections, and compliance with industry standards guarantee consistent, reliable parts.
Transparent Collaboration: Clients are welcome to visit our factory to monitor production, fostering trust and ensuring alignment with expectations.
Comprehensive Support: Our team provides pre-sales technical advice, production updates, and after-sales assistance, ensuring a seamless experience.
For 321 Stainless Steel Sheet Plate Laser Cutting Customized OEM Metal Machine Parts, 321 grade chemical composition and technical property is as below:
Standard
C max%
Si max
Mn max
P max
S max
Cr
Ni
Ti
tensile strength（MPa）
yield strength（MPa）
Elongation%
321
0.08
1
2
0.045
0.03
17～19
9～12
5*C%-0.7
≥520
≥205
≥40
Product FAQ
Q: What makes 321 stainless steel different from 304, and when should I choose 321 instead?
A: 321 contains titanium, which stabilizes the material by binding with carbon, preventing chromium carbide formation during welding or high-temperature exposure—this eliminates intergranular corrosion, a common issue in 304. Choose 321 for applications involving continuous high temperatures (above 425°C), welding without post-weld heat treatment, or exposure to corrosive environments where grain boundary resistance is critical.
Q: Can 321 stainless steel parts be welded, and does welding affect their corrosion resistance?
A: Yes, 321 is highly weldable. Unlike 304, which may develop intergranular corrosion near welds without heat treatment, 321’s titanium stabilization preserves corrosion resistance even after welding. This makes it ideal for welded components in high-temperature or corrosive settings.
Q: What is the maximum temperature 321 stainless steel can withstand?
A: 321 performs reliably in continuous service up to 800°C (1472°F) and intermittent exposure up to 900°C (1652°F). Beyond these temperatures, its strength may decrease, but it retains better oxidation resistance than many other grades.
Q: How precise is your laser cutting for 321 stainless steel parts?
A: Our 20000V laser cutting machines achieve tolerances as tight as ±0.1mm, ensuring precision even for complex geometries. This level of accuracy makes 321 parts suitable for applications requiring exact fits, such as aerospace components or precision machinery.
Q: Do you provide material certifications for 321 stainless steel parts?
A: Yes, we supply certifications verifying 321’s chemical composition, mechanical properties, and compliance with industry standards (e.g., ASTM). These documents confirm the material’s quality and suitability for your application.
Q: What is the lead time for custom 321 stainless steel parts, and can you handle large-volume orders?
A: Lead times typically range from 2–4 weeks, depending on complexity and quantity. We regularly handle large-volume orders, leveraging our in-house production capacity and material stock to ensure timely delivery without compromising quality.
Q: Can you produce 321 parts with special surface finishes?
A: Absolutely. Our polishing and machining capabilities allow for various surface finishes, from matte to mirror-like, based on your requirements. Specialized finishes can enhance corrosion resistance or improve aesthetic appeal for visible components.
