November 27, 2023
Stainless steel is a type of steel. Steel refers to steel that contains less than 2% carbon (C), and iron if it contains more than 2%. During the smelting process of steel, alloy elements such as chromium (Cr), nickel (Ni), manganese (Mn), silicon (Si), titanium (Ti), and molybdenum (Mo) are added to improve the performance of the steel and make the steel corrosion-resistant. (That is, it does not rust) It is what we often call stainless steel.
- 304 stainless steel -
Performance introduction
304 stainless steel is the most common type of steel. As a widely used steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; it has good hot workability such as stamping and bending, and no heat treatment hardening phenomenon (non-magnetic). , operating temperature -196℃～800℃).
Scope of application
Household supplies (categories 1 and 2 tableware, cabinets, indoor pipelines, water heaters, boilers, bathtubs)
Auto parts (windshield wipers, mufflers, molded products)
Medical equipment, building materials, chemicals, food industry, agriculture, ship parts
- 304L stainless steel -
(L is low carbon)
Performance introduction
As a low-carbon 304 steel, its corrosion resistance is similar to that of 304 steel under normal conditions. However, after welding or stress relief, its resistance to intergranular corrosion is excellent; it can also maintain good performance without heat treatment. Excellent corrosion resistance, operating temperature -196℃～800℃.
Scope of application
It is used in outdoor machines in the chemical, coal, and petroleum industries that require high resistance to grain boundary corrosion, as well as heat-resistant building material parts and parts that are difficult to heat treat.
- 316 stainless steel -
Performance introduction
Due to the addition of molybdenum, 316 stainless steel has excellent corrosion resistance, atmospheric corrosion resistance and high temperature strength, and can be used under harsh conditions; it has excellent work hardening properties (non-magnetic).
Scope of application
Seawater equipment, chemicals, dyes, papermaking, oxalic acid, fertilizer and other production equipment; photography, food industry, coastal area facilities, ropes, CD rods, bolts, nuts.
- 316L stainless steel -
(L is low carbon)
Performance introduction
As a low carbon series of 316 steel, in addition to having the same characteristics as 316 steel, it has excellent resistance to grain boundary corrosion.
Scope of application
Products with special requirements for resistance to grain boundary corrosion.
Performance comparison
chemical composition
316 and 316L stainless steel are molybdenum-containing stainless steels.
The molybdenum content in 316L stainless steel is slightly higher than that of 316 stainless steel. Due to the molybdenum in the steel, the overall performance of this steel is better than that of 310 and 304 stainless steel. Under high temperature conditions, when the concentration of sulfuric acid is lower than 15% and higher than 85%, 316 Stainless steel has a wide range of uses.
316 stainless steel also has good resistance to chloride attack, so it is often used in marine environments. 316L stainless steel has a maximum carbon content of 0.03 and can be used in applications where annealing cannot be performed after welding and where maximum corrosion resistance is required.
