309 Stainless Steel Sheet
What is 309 Stainless Steel Sheet?
The 309 stainless steel sheet, identified by the Alloy 309 (UNS S30900), is an austenitic stainless steel crafted for high temperature environments and notable for its excellent corrosion resistance. This alloy is available in several variations, including 309S (UNS S30908), a low-carbon version that enhances fabrication ease, and 309H (UNS S30909), which incorporates a higher carbon content to boost creep resistance. The distinctions among 309, 309S, and 309H primarily lie in their carbon content, directly influencing their applications. While 309S is designed to reduce carbide precipitation for better weldability, 309H's elevated carbon level augments its strength under high-temperature conditions. These characteristics make them all exceedingly resistant to corrosion and oxidation, offering robust performance in elevated temperatures, which makes them ideal for challenging environments.
Features of 309 Stainless Steel Sheet
The 309 stainless steel sheet, known by its AISI 309 designation, is recognized for its exceptional capabilities in challenging environments. It exhibits superior oxidation resistance, maintaining stability up to 1038°C under steady conditions and slightly less at 1010°C when subjected to frequent thermal cycling. Its composition makes it suitable for use in sulfur-rich atmospheres up to 1000°C, although its performance in highly carburizing environments is moderate due to its high chromium and low nickel content.
This alloy is apt for applications involving slightly oxidizing, nitriding, cementing, and thermal cycling, although the maximum service temperature may need adjustment for specific scenarios. Exposure to temperatures between 650 – 950°C can lead to sigma phase precipitation, but this can be mitigated with a solution annealing treatment at 1100 – 1150°C, which restores toughness.
Furthermore, the 309 stainless steel sheet is easily welded and processed by standard shop fabrication practices, highlighting its adaptability across a broad range of industrial applications. Its ability to withstand high temperatures and resist corrosion makes it a valuable material for various manufacturing processes.
309 Stainless Steel Chemical Composition & Technical Data Sheet
309 Stainless Steel Standards Comparison
| STS | USA | UNS | CHINA | EURONORM | RUSSIA | SWEDISH | JAPANESE | |
| GRADE | AISI/ASTM | NO | GB | NO | NAME | GOST | SS | JIS |
| 309 | 309 | S30900 | 0Cr23Ni13 | 1.4828 | X15CrNiSi20-12 | 20Ch20N14S2 | X15CrNiSi20-12 | SUS 309 |
309 Stainless Steel Chemical Comparison
| Grade | Standard | Chemical Composition(%) | ||||||
| C | Si | Mn | P | S | Cr | Ni | ||
| 309 | ASTM A240 | ≤0.20 | ≤0.75 | ≤2.00 | ≤0.045 | ≤0.030 | 22.00~24.00 | 12.00~15.00 |
| 309S | ≤0.08 | ≤0.75 | ≤2.00 | ≤0.045 | ≤0.030 | 22.00~24.00 | 12.00~15.00 | |
309 Stainless Steel Mechanical Properties
| Grade | Tensile Test | Hardness Test | |||
| 0.2% Y.S(Mpa) | T.S(Mpa) | Elongation(%) | Hardness | HBN | |
| 309 | 310 | 586 | ≥50 | Annealed | 202 |
309 Stainless Steel Finish & Application
Additionally, 309 stainless steel finds applications in paper mill equipment, petroleum refining, catalytic recovery systems, and recuperates, highlighting its adaptability to corrosive environments and high-temperature resistance. The power generation sector benefits from its use in components like pulverized coal burners and tube hangers. It also plays a critical role in fluidized bed furnaces, including grids, piping, and wind boxes, as well as in thermal processing equipment such as annealing covers, burner grids, doors, fans, lead pans, neutral salt pots, muffles, retorts, and walking beams.
Beyond industrial settings, 309 stainless steel is utilized in oven and stove parts, underscoring its significance in applications requiring durability at elevated temperatures. Its chemical composition ensures it remains a preferred choice in the chemical and pharmaceutical industries, where reliability in high-temperature ranges is paramount. This makes 309 stainless steel a go-to option for a wide array of high-temperature applications, from simple oven linings to complex machinery used in energy and waste management.
309 Stainless Steel Sheet Package & Loading Details
At Aoxing, as a premier provider of 309 stainless steel sheets, our dedication extends to the excellence of our packaging and shipping practices, developed from years of export experience. We are well-versed in the standards required for export packaging and take additional steps to reinforce our products within the container, ensuring they withstand the rigors of transportation without damage.
Our 309 stainless steel sheets are individually wrapped in robust, water-resistant materials to guard against environmental elements. To ensure the sheets remain immobile and maintain their pristine condition during transit, we employ strategic bracing within the container. This methodical approach to packaging guarantees that your stainless steel sheets arrive in perfect condition, ready for your project needs.
WHY CHOOSE US?
We are the cold-rolled stainless steel coil production base in China with 200,000 tons capacity annually.
1. Guaranteed Stock Availability: Experiencing stock shortages during crucial times can hinder your projects. Our robust inventory management ensures a consistent supply, ready to dispatch large quantities swiftly, keeping your operations smooth and uninterrupted.
2. Comprehensive Range of Specifications: Finding the exact stainless steel coil specifications can be challenging. We offer a diverse range of specs, ensuring you find precisely what your project demands, with the assurance of our commitment to meeting your specific needs.
3. Customized Material Processing: Custom processing needs can be demanding. Our advanced facilities provide tailored solutions, from precise dimension alterations to specific finish treatments, ensuring your requirements are met with utmost precision.
4. Accurate Shearing Services: Precision is key in stainless steel utilization, and our expert shearing services guarantee exactness in every cut, aligning perfectly with your specifications and quality expectations.
5. Cost-effectiveness is crucial in supplier selection. Our optimized procurement and cost-efficient processes ensure you receive not just premium-quality products but also the best prices, offering exceptional value for your investment.
309 Stainless Steel Sheet FAQ
1. Can you provide custom 309 stainless steel sheet?
Absolutely, we tailor 309 stainless steel sheet to your needs, ensuring your specifications for finish, thickness, width, length and physical properties are met.
2. What's the delivery time?
Quick delivery for trial orders within a week, while regular orders range from 7-30 days.
3. How do you guarantee your 309 stainless steel sheet quality?
Our 309 stainless steel sheets undergo rigorous inspections during manufacturing, cutting, and packaging to ensure the highest quality. And we also provide 309 stainless steel sheet Mill Test Certificate.
4. Can I get some 309 ss sheet samples?
We can provide a 309 ss sheet sample for you to check the quality. Sample is free and you just pay the freight.
5. 304 vs 309 stainless steel, what is the difference, ?
Comparing 304 and 309 stainless steel reveals significant differences essential for selecting the appropriate material for specific requirements. Here's a brief comparison:
Chemical Composition and Heat Resistance:
304 Stainless Steel: This grade has a well-balanced mix of approximately 18% chromium and 8% nickel, contributing to its excellent corrosion resistance, making it ideal for various applications from kitchenware to architectural accents.
309 Stainless Steel: With higher levels of chromium (around 23%) and nickel (about 12%), 309 stainless steel provides enhanced capabilities for enduring elevated temperatures and greater oxidation resistance. This grade is specifically designed for challenging high-temperature environments.
Applications:
304 Stainless Steel: Its versatility and corrosion resistance make it a popular choice for kitchen appliances, architectural design, and automotive parts, prized for both functionality and aesthetic appeal.
309 Stainless Steel: Best suited for high-temperature situations such as furnace parts, heat exchangers, and other applications where materials are subjected to intense heat, 309's superior heat resistance ensures reliability and performance under extreme conditions.
Price Consideration:
The specialized properties of 309, including its superior heat and oxidation resistance, generally position it at a higher price point compared to 304. The selection between these two depends on specific application demands, temperature exposure, and budgetary constraints.
In summary, while 304 stainless steel offers excellent versatility and corrosion resistance for general applications, 309 stainless steel stands out in high-temperature environments, providing enhanced performance where heat resistance is crucial. The decision between 304 and 309 should be guided by the application's unique requirements, ensuring the chosen material delivers the best balance of performance and cost-efficiency.
6. What is the 309 stainless steel sheet price?
309 stainless steel sheet price actual price will fluctuate based on exchange rates, market conditions, etc. For details, please contact us for a quote.
