The simple answer is 304 contains 18% chromium and 8% nickel while 316 contains 16% chromium, 10% nickel and 2% molybdenum. The molybdenum is added to help resist corrosion to chlorides (like sea water and de-icing salts). I found the brochure Stainless Steel for Coastal and Salt Corrosion Applications to be very helpful as a general reference for using stainless steel in our area.
How do you know that you are using 316 stainless steel instead of 304 stainless steel?
You can't know just by looking. There are no visible differences between two identical sheet metal parts (polished or polished in exactly the same way). That's why you need a Material Test Report (MTR) of the actual material to verify that it is 304 or 316. We make sure that we get one for every shipment that Nema's housing receives, and we assure our customers that the housing and its accessory parts are made from designated and ordered alternative stainless steel materials. As shown above, some small parts (such as clamps and mounting feet) are made of 316 stainless steel and are labeled 6 in the circle.
304 316 Stainless steel sheet is widely used in trains, aircraft, conveyor belts, vehicles, bolts, nuts, springs, screens, cabinets, boilers, building materials, chemicals, bathtubs, agriculture, water heaters, auto parts, medical appliances, indoor pipelines, food industry, ships Parts and other industries.
While similar to Type 304, which is common in the food industry, both type 316 and 316L exhibit better corrosion resistance and are stronger at elevated temperatures. They also are both non-hardenable by heat treatment and can be readily formed and drawn (pulled or pushed through a die or smaller hole).
1.Customized--We are the manufacturer! sample &OEM&ODM are available!
2.Safety--We have own test chart, all of our products have been rigorously tested in the factory.
3.Certification--We have CE and quality management system certification.
4.High Quality --Our company uses the most advanced equipment to make the best quality products.
Q1: Could you provide the samples?
A: yes, we could provide the free samples on conditions it is available in stocks, however, the transportation fee is borne by buyer.
Q2: How could you guarantee your products?
A: Each piece of products is manufactured by certified workshops, inspected by SORUN piece by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.
Q3: How do we trust your company?
A: We specialise in steel business for years, headquarter locates in Jinan, Shandong province, you are welcome to investigate in any ways, by all means, you could place an order in Alibaba with trade assurance which could secure your payment.Stainless Steel Sheet