304 stainless steel coil is a low carbon, molybdenum bearing, austenitic stainless steel coil. Its chemistry features a minimum of 18% chromium and 8% nickel.
These grade stainless steel coils are used for its corrosion resistance to many chemical corrodents, in addition to having good mechanical properties. The corrosion resistance of grade 304 stainless steel makes it ideal for food processing equipment and surgical instruments. It has superior formability and weld ability when compared to other grades of stainless steel.
304 Stainless Steel Coil Chemical Compositions
| Grade | Standard | C | Si | Mn | P | S | Cr | Ni | Mo |
| 304 | ASTM A240 | ≤0.07 | ≤0.75 | ≤2.00 | ≤0.045 | ≤0.030 | 18.00-20.00 | 8.00-11.00 | – |
304 Stainless Steel Coil Mechanical Properties
| Grade | EN Grade | Yield Strength Rp0.2(N/mm²) | Tensile Strength Rm(N/mm²) | Hardness | Vickers Hardness(HV) | Elongation A50% |
| 304 | 1.4301 | ≥205 | ≥520 | Annealed | ≥150 | ≥40 |
Surface
2B (The surface brightness and flatness of No.2B is better than NO.2D then through a special surface treatment to improve its mechanical properties, NO.2B could nearly satisfy comprehensive uses)
NO.1 (Polished with abrasive belt of grit#100-#200, have better brightness with discontinuous coarse stria, used as inner and external ornaments for building, electrical appliances, and kitchen utensils, etc)
NO.4 (Polished with abrasive belt of grit#150-#180, have better brightness with discontinuous coarse stria, but thinner than NO.3, are used as bathtub buildings inner and external ornaments electrical appliances kitchen utensils and food processing equipment, etc)
BA (Cold rolled, bright annealed, and skin-passed, the product have excellent brightness and good reflexivity like mirror, kitchen apparatus, ornament, etc)
8K Mirror (The product have excellent brightness and prefer reflexivity can be the mirror)
HL (Polished with abrasive belt of grit #150-#320 on the NO.4 finish and has continuous streaks, mainly used as buildings ornaments elevators, the door of the building, frontal plate, etc)
Application:
Compared with traditional steel, because 304 stainless steel can ensure a sufficiently high strength and weight ratio, it also has good plasticity, toughness, formability and weldability. It is the first choice for making car frames. The superior performance of stainless steel can create a car with light weight, strong resistance, high safety and long life. Such a frame can be recycled for secondary use. Not only can save costs, but also save resources. And some other parts of auto parts are also made of stainless steel. Stainless steel has a huge potential market in the entire automotive industry!
