FAQ
What is the difference between 304 and 316 Stainless Steel?
304 Stainless Steel
304 is the most common form of stainless steel. It can withstand corrosion from most oxidising acids, making it easy to sanitise and ideal for kitchen and food applications. Additionally, 304 stainless steel is commonly found in buildings and décor, due to its durability and aesthetic appeal. However, this steel is susceptible to corrosion from chloride solutions or salty environments, such as those near the ocean. Chloride ions can cause localised areas of corrosion, known as “pitting,” which can spread beneath the protective chromium barrier and compromise the internal structure.
Common Uses:
- Fasteners - screws, nuts and bolts
- Residential sinks and taps
- Pots/Pans
- Indoor decorative hardware
316 Stainless Steel
316 stainless steel is a high-performance, corrosion-resistant alloy, renowned for its exceptional durability in harsh environments. It contains molybdenum, an element that significantly enhances its resistance to corrosion, especially in salty and chloride-rich environments. This superior corrosion resistance makes 316 stainless steel ideal for marine applications, earning it the designation of "marine grade." As the second most common stainless steel grade, 316 is frequently used in industries that demand reliable performance in challenging conditions.
Common Uses:
- Marine equipment - Boat accessories, trailer parts, boat rollers, hand rails, biminis
- Outdoor hardware and furnishings