EN 1.4539 stainless steel is equivalent to ASTM 904L (UNS N08904), a high-alloy austenitic stainless steel known for exceptional corrosion resistance in harsh chemical and marine environments.

EN 1.4550 stainless steel is equivalent to AISI 347, also known as X6CrNiNb18-10, a niobium-stabilized austenitic stainless steel with excellent resistance to intergranular corrosion.

409 stainless steel pipe offers better heat resistance and cost-efficiency for automotive exhaust systems, while 304 provides superior corrosion resistance but at a higher price—choose 409 for standard use, 304 for high-corrosion environments.

X12Cr13 / 410 / 1.4006 stainless steel is a heat-treatable martensitic stainless steel offering high hardness, good wear resistance, and moderate corrosion resistance, widely used in turbine blades, valves, and pump components.

Both 304 and 316 stainless steels are classified as food-grade and meet regulatory standards for direct contact with food, including FDA regulations, EU Framework Regulation (EC) No 1935/2004, and NSF/ANSI 51 certification.

The main difference between 316 and 316L stainless steel is the level of carbon content, weldability, corrosion resistance and mechanical properties. SS316 has a 0.08% max carbon content while SS316L (UNS S31603) only has a maximum 0.03% carbon content.