Why is AeroPress Steel manufactured with professional-grade 304 stainless steel?Updated 3 hours ago

We chose 304 stainless steel because it delivers the ideal balance of durability, corrosion resistance, food safety, and manufacturability for a precision coffee press. 304 is exceptionally resistant to rust and staining, making it perfect for repeated exposure to hot water and daily use. It’s also strong and impact-resistant, helping the AeroPress Steel stand up to years of brewing at home or on the go. Just as important, 304 stainless steel is easier to form and weld than many alternative alloys. That matters in a product like AeroPress Steel, where tight tolerances and precise assembly are essential to ensuring a consistent seal and dependable performance. You may see other brands describe their stainless steel as “18/8” or even “aerospace grade.” In practice, 18/8 is simply another way of describing 304 stainless steel. While 304 can be used in certain non-structural aerospace components, it is not typically selected for high-stress aircraft structures because aerospace engineering prioritizes extremely high strength-to-weight ratios and specialized alloys. For a coffee press, however, 304 stainless steel is exactly the right material — durable, corrosion-resistant, food-safe, and built for everyday performance.