High Quality TISCO No.1 Finish Stainless Steel Coil 304

High Quality TISCO No.1 Finish Stainless Steel Coil 304

stainless steel coil 304 Application fields Suitable for food processing, storage and transportation. It has good processability and weldability. Plate heat exchanger, corrugated pipe, 304 C Mn P S Si Cr Ni requirements,% 0.08 2.00 0.045 0.030 1.00 18.0 – 20.0 8.0-11.0 Household products (1, 2...
Product description

Stainless Steel Coil 304


Application

Suitable for food processing, storage and transportation. It has good processability and weldability. Plate heat exchanger, corrugated pipe, 304 C Mn P S Si Cr Ni requirements,% 0.08  2.00  0.045  0.030  1.00  18.0 – 20.0  8.0-11.0

Household products (1, 2 types of tableware, cabinets, indoor pipelines, water heaters, boilers, bathtubs), Auto parts (windshield wiper, muffler, molded products), medical equipment, building materials, chemicals, food industry, agriculture, ship parts, etc. 304 stainless steel for the state recognized food grade stainless steel.


Chemical Composition(%)

C ≤ 0.08

Si ≤ 1.00

Mn ≤ 2.00

P ≤ 0.035

S ≤ 0.03

Ni: 8.0-10.0

Cr: 18.0-20.0


304 stainless steel coil 1.jpg


Nature

Tensile strength (MPA)620 MIN

Yield strength (MPA) 310 MIN

Elongation rate (%) 30 MIN

Area reduction (%) 40 MIN

304 Stainless steel density 7.93 g/cm3

Austenitic stainless steels generally use this value

304 Chromium content (%) 18--20.

304 equivalent of 0Cr19Ni9 (0Cr18Ni9)stainless steel in China


201 and 304 Differences

1, commonly used stainless steel plate is divided into 201 and 3,042 kinds of steel, the actual is the composition is different, 304 quality is better, but the price is expensive, 201 bad some.

2, 201 group became 17Cr-4.5Ni-6Mn-N, is the steel of the section NI, 301 steel Substitutes. After cold processing has the magnetism, uses in the railroad vehicle.

3, 304 groups become 18cr-9ni, is the most widely used stainless steel, heat-resisting heat. Used in food production equipment, chemical equipment, nuclear power and so on.

4, 201 is high manganese content, the surface is very bright with dark bright, high manganese content is easy to rust. 304 contain chromium more, the surface appears matte, do not rust. Two kinds of put together are compared. The most important is the corrosion resistance is different, 201 corrosion resistance is very poor, so the price is much cheaper. Because 201 contain nickel low, so the price is lower than 304, so the corrosion resistance is not as good as 304.

The difference between 5, 201 and 304 is the problem of nickel. and 304 of the price is now more expensive, generally close to 200,001 tons, but 304 words can be guaranteed at least in the use of the process will not rust. (Use potions to do experiments)

6, stainless steel is not easy to rust because on the surface of the steel to form rich chromium oxide can protect steel, 201 material belongs to the high manganese stainless steel 304 hardness high carbon low ni.

7. Different components (mainly from carbon-containing, manganese, nickel-containing, chromium-bearing aspects to distinguish between 201 and 304 stainless steel)

When it comes to fatigue resistance, 201 hardness is larger, toughness is less than 304, or 304 of fatigue resistance is better.


304 stainless steel coil 2.jpg


304 The material appears the rust phenomenon, may have the following several reasons:

1.Chlorine ions exist in the use of the environment.

Chlorine ions are widespread, such as salt/sweat/seawater/sea breezes/soil, etc. Stainless steel in the presence of chloride ions in the environment, corrosion quickly, or even more than ordinary low-carbon steel.

Therefore, the use of stainless steel environment requirements, but also need to often wipe, remove dust, keep clean and dry.

The United States has an example: an enterprise with an oak container to contain a solution containing chloride ions, the container has been used nearly hundreds of years, the last century 90 's plan to replace, because the oak material is not modern, the use of stainless steel replacement 16 days after the container due to corrosion leakage.

2.No solution treatment.

The alloying elements were not dissolved into the matrix, resulting in low matrix microstructure and poor corrosion resistance.

3.This material without titanium and niobium has a natural tendency to intergranular corrosion.

The intergranular corrosion can be reduced by adding titanium and niobium, and then with stable treatment.

 


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