QXY stainless steel air knives are designed for production environments where strength, hygiene, corrosion resistance and long service life are more important than minimum weight. According to the product category, these models support 304 or 316 stainless steel options, making them suitable for harsh or clean production conditions that require stable airflow and easy-to-clean equipment.
Compared with aluminum alloy, stainless steel has higher density and higher material cost, so it is heavier and not always the most economical choice for light-duty drying. However, its advantage appears in wet, high-temperature, corrosive or hygiene-sensitive environments. 304 stainless steel is widely used for general industrial corrosion resistance, while 316 stainless steel is more suitable when stronger corrosion resistance is required.
For applications involving water removal, dust cleaning, cooling and surface drying, stainless steel air knives provide a more durable structure and better resistance to long-term wear in demanding workshops. They are especially valuable where the air knife may contact moisture, cleaning agents, process liquids or high-temperature airflow.
Typical application industries include food packaging, automotive parts, chemical processing, wet production lines, clean production areas and other industrial drying or blow-off systems that require reliable, corrosion-resistant airflow equipment.
Stainless steel air knives are selected not only by size and airflow, but also by the actual production environment. QXY can provide 304 or 316 stainless steel options so customers can balance hygiene requirements, corrosion resistance and project budget.
· 304 stainless steel is a practical choice for many water-based drying, washing and hygienic production lines.
· 316 stainless steel provides higher corrosion resistance, especially when the process involves chlorides, stronger chemicals, salt spray, coastal humidity or stricter durability requirements.
· The final material should be selected according to cleaning method, chemical exposure, temperature, installation position and expected service life.
· For heated air, special liquids or corrosive gas environments, please share the process details before final selection.
The following table compares common air knife materials from the perspective of hardness, corrosion resistance, cost performance, density, heat resistance and typical use. Actual material choice should be confirmed according to the working environment and customer requirements.
Material | Hardness / Strength | Corrosion Resistance | Cost Performance | Density / Weight | Heat Resistance and Best Use |
Stainless Steel 304 | High strength and good wear resistance; suitable for durable air knife bodies. | Good. Suitable for water, food, packaging, cleaning and many wet production lines. | Medium. Higher cost than aluminum, but strong durability and cleanability. | High. Approx. 7.93 g/cm3, requiring stronger mounting support than aluminum. | Good. Suitable for wet, hygienic and demanding industrial lines; confirm seals and process details for continuous high-temperature use. |
Stainless Steel 316 | High strength, similar to 304, with excellent long-term durability. | Very good to excellent. Better than 304 in chloride, chemical, salt spray or coastal environments. | Medium to low. Higher cost, but valuable when corrosion resistance is critical. | High. Approx. 8.00 g/cm3, heavy but robust. | Good. Recommended for corrosive, high-humidity or higher-value production environments. |
6063-T6 Aluminum Alloy | Medium. Good structural strength for general industrial air knife bodies. | Good for general environments; not the first choice for strong chemical or high-hygiene applications. | Excellent. Lightweight and cost-effective for standard drying and blow-off. | Low. Approx. 2.70 g/cm3, easy to install and retrofit. | Moderate. Suitable for standard industrial use; confirm details for continuous high-temperature conditions. |
Titanium Alloy | High strength-to-weight ratio; suitable for demanding and high-value applications. | Excellent. Strong resistance in many aggressive chemical environments. | Low. Higher material and processing cost, used only when required by the process. | Medium. Approx. 4.50 g/cm3, lighter than stainless steel but heavier than aluminum. | High. Suitable for harsh corrosive or special material environments. |
PVC | Lower. Not designed for heavy impact or high-load structures. | Excellent for many normal-temperature acid and alkali washing environments. | High. Cost-effective in suitable chemical wet lines. | Low. Approx. 1.38-1.45 g/cm3, lightweight and easy to handle. | Low. Not recommended for hot air or high-temperature areas; best for normal-temperature chemical rinsing lines. |
Choose 304 stainless steel when the application involves general water blow-off, food or packaging lines, clean production areas, glass washing, electronics drying or other standard wet industrial processes.
Choose 316 stainless steel when the line has stronger corrosion risks, such as chloride-containing water, chemical cleaning agents, salt spray, coastal humidity, high-value products or longer service-life expectations in harsh environments.
Corrosion-resistant structure: Stainless steel construction is suitable for wet, washing and clean production environments where durability is important.
Hygienic and easy to clean: Smooth stainless steel surfaces help support cleaning requirements in food, pharmaceutical, packaging and electronics lines.
Stable airflow distribution: A well-designed air chamber and outlet slot create a continuous air curtain for consistent drying and blow-off performance.
Long service life: 304 and 316 stainless steel options provide strong durability for demanding production lines.
Custom configuration: Length, inlet direction, outlet gap, mounting style and connection size can be configured for the customer's equipment layout.
Food and Beverage Processing: Remove water from bottles, cans, packages, conveyor belts and washed product surfaces while supporting easy cleaning requirements.
Pharmaceutical and Medical Packaging: Provide clean and stable blow-off for packaging, containers and production lines where stainless steel equipment is preferred.
Glass Washing and Drying: Deliver even air coverage for glass sheets, panels and flat materials after washing or rinsing.
Electronics and Precision Cleaning: Remove moisture, dust and small residues from parts after cleaning while maintaining stable airflow across the working width.
Metal Parts and Conveyor Systems: Support drying, cooling, chip removal and surface blow-off in automated production lines.
· Material option: 304 stainless steel or 316 stainless steel according to working environment.
· Air knife length can be customized according to product width and airflow coverage requirements.
· Inlet direction can be configured as end inlet, side inlet, bottom inlet or multi-inlet depending on the model and line layout.
· Outlet gap can be selected or adjusted according to droplet size, air volume and drying target.
· Mounting holes, brackets, connection size and installation angle can be designed for new equipment or retrofit projects.
· Surface finish and sealing design can be discussed for cleaning requirements, operating temperature and process environment.
1. Confirm the product width and required air coverage.
2. Identify the target: drying, water blow-off, oil removal, dust removal, cooling, chip removal or surface cleaning.
3. Check whether the process requires 304 stainless steel or 316 stainless steel.
4. Confirm the liquid, chemical, chloride, humidity and cleaning conditions around the air knife.
5. Check conveyor speed and the distance between the air knife outlet and product surface.
6. Confirm the available air source, air pressure, blower capacity and pipe layout.
7. Choose the inlet direction, installation angle and mounting method according to the machine structure.
8. Share drawings, photos or line layout information so the most suitable model can be recommended.
What materials are available for QXY stainless steel air knives?
The main material options are 304 stainless steel and 316 stainless steel. The final choice depends on the customer's working environment, corrosion level, cleaning method and budget.
What is the difference between 304 and 316 stainless steel air knives?
304 stainless steel is suitable for many general wet, clean and hygienic production lines. 316 stainless steel offers better corrosion resistance and is recommended for chloride exposure, coastal humidity, chemical processes or harsher environments.
When should I choose 316 stainless steel?
Choose 316 when the air knife will work near salt, chloride-containing water, chemical liquids, high humidity, coastal conditions or production lines where higher corrosion resistance is required.
Are stainless steel air knives suitable for food and pharmaceutical lines?
Yes. Stainless steel air knives are commonly selected for food, beverage, pharmaceutical packaging and other clean production environments because they are durable and easy to clean.
Can the air knife be customized?
Yes. Length, inlet direction, outlet gap, mounting style, connection size and material option can be customized according to the production line.
What information is needed for a quotation?
Please provide product width, conveyor speed, application purpose, working environment, chemical or water exposure, available air source, working distance, temperature, installation space, preferred material and any machine drawings or photos.
Need a custom air knife solution? Send us your application details, material requirement ，or air source type . Our engineering team will help you select the right model.
Shenzhen Qixingyuan Machinery Equipment Co., LTD.
info@airknifecn.com
Building 8, Wanfeng Third Industrial Zone, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China
