Type 304 Cold Rolled Stainless Steel Coil- China Manufacturers Suppliers Factory

The invention and use of stainless steel can be traced back to the first World War. British scientist Henry Breerley was commissioned by the ordnance factory of the British government to study the improvement of weapons. At that time, the rifles used by soldiers were very easy to wear, and Brierley wanted to invent a kind of alloy steel that was not easy to wear. A lot of our life is stainless steel, such as kettle, thermos cup, chopsticks, plates, etc. Because of the improvement of safety awareness, more and more people will pay special attention to whether 304 stainless steel is the most important part of stainless steel when choosing stainless steel tableware. Many businesses will indicate that their products are 304. But really, can 304 stainless steel make dinner plates safely?

Here is the content:

• Is stainless steel plate ideal

• Specific test

Is stainless steel plate ideal

It can be used, but it is not an ideal tableware, because stainless steel contains a variety of metal elements, some of which are decomposed under the corrosion of vinegar or salt, and damage organs after eating into the human body. Therefore, if you want to achieve absolute food safety, you should still use plates made of ceramic or glass. Ceramic glass is made of oxide sintered at high temperature, and its corrosion resistance is very high, even if there are trace elements Jiena is just soil, which will not damage health after entering the human body. Heavy metal poisoning is accumulated over time, if the long-term intake of excessive heavy metals, it will lead to metal poisoning, life-threatening. Therefore, we all attach great importance to the safety of stainless steel plates.

Specific test

Everyone's worry is very reasonable - stainless steel tableware is in direct contact with food. If the stainless steel material is not up to standard, the heavy metals in it will be dangerous to migrate into food.

In fact, 304 is an American Standard, which is a brand of stainless steel produced according to American ASTM standards. 304 stainless steel contains 18% chromium and 8% nickel, which has good corrosion resistance. However, our national standard gb4806.9-2016 "metal materials and products in contact with food" does not specify the brand of food grade stainless steel, but stipulates that the stainless steel used in contact with food must meet five heavy metal migration indicators:

In other words, stainless steel tableware is allowed to add some heavy metals in the production process, but the amount of these metals migrating into the food can not exceed the provisions of the above standard. It is very likely to consume excessive heavy metals in the process of long-term use if it exceeds the requirements, which will cause irreparable losses to our lives. Therefore, we must pay attention to the content of various heavy metals in the plate when selecting, so as to avoid excessive intake.

From the standard point of view, to choose food grade 304 stainless steel as the material.

High quality stainless steel is needed to make dinner plate with stainless steel, but this kind of stainless steel generally has less output, complex process and high cost, and few products meet the relevant conditions. If you want to choose the stainless steel plate you are satisfied with, please come to Jiangsu C.J.M Stainless Steel Group to have a look. We have high quality stainless steel plate for you to rest assured to use. Tel. + 86-18092577236, post office postmaster@ssplatechina.com.

At present, the stainless steel commonly used in kitchen equipment mainly includes 201 and 304. 201 stainless steel is cost-effective, cheap, but easy to rust; 304 stainless steel is the most widely used stainless steel material, not easy to rust, good quality, the price is also higher than 204.

There is almost no difference between 201 stainless steel plate and 304 stainless steel plate, which can hardly be distinguished by naked eyes. Here are some methods to distinguish them.

 

1. Specification: commonly used stainless steel plate is divided into 201 and 304 two models, the actual composition is different, 304 good quality, but the price is expensive, 201 poor. 304 is imported stainless steel plate, 201 is domestic stainless-steel plate.

 

2. The composition of 201 is 17cr-4.5ni-6mn-n, which is the substitute of 301 steel. It has magnetism after cold working and is used in railway vehicles.

 

3. The composition of 304 is 18cr-9ni, which is the most widely used stainless steel and heat-resistant steel. For food production equipment, chemical equipment, nuclear power, etc.

 

4. 201 stainless steel plate has high manganese content, bright surface with dark brightness, high manganese content is easy to rust, manganese is also harmful to human nervous system, so 201 stainless steel plate is not suitable for food grade equipment. 304 contains more chromium, the surface is matte, not rusty. The two are compared together.

The most important thing is that the corrosion resistance is different. The corrosion resistance of 201 is very poor, so the price is much cheaper. Because 201 has low nickel content, the price is lower than 304, so the corrosion resistance is not as good as 304. And 304 stainless steel safety belongs to the edible grade material, at present, the edible grade stainless steel is 304 stainless steel plate and above.

 

5. The difference between 201 and 304 is the nickel content. And the price of 304 is more expensive now, but 304 can at least guarantee that it will not rust in the process of use. (stainless steel solution can be used for experiment)

 

6. The reason why stainless steel is not easy to rust is that chromium rich oxide formed on the surface of steel body can protect the steel body

 

7. Different composition (mainly from carbon, manganese, nickel, chromium to distinguish 201 and 304 stainless steel)

 

Steel grade carbon (c) silicon (SI) manganese (MN) phosphorus (P) sulfur (s) chromium (CR) nickel (Ni) molybdenum (MO) copper (Cu)

 

AISI(304) ≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 18-20 8-10

 

AISI(201) ≤0.15 ≤1.00 5.5-7.5 ≤0.05 ≤0.03 16-18 3.5-5.5

 

Therefore, 304 stainless steel is the best material for the production of kitchen equipment. However, many unscrupulous businesses in the market now use 201 stainless steel to fill 304 stainless steel, which is difficult to distinguish when accepting. Therefore, when purchasing stainless steel kitchenware and kitchen equipment, first of all, do not choose brands lower than the industry price.

Stainless steel is a very common material in our daily life, for example, most of the pots and pans we use in our daily life are made of stainless steel. Stainless steel has a wide range of applications, from small stainless steel tableware to stainless steel construction and decoration materials. This article will provide a brief analysis of stainless steel, some people do not know the difference between cold rolled stainless steel and hot rolled stainless steel. At the same time, this article will provide a brief introduction to the rolling of stainless steel.

What is cold rolled stainless steel?

What is the difference between cold rolled stainless steel and hot rolled stainless steel?

What are the requirements for rolling stainless steel?

What is cold rolled stainless steel

Cold rolled stainless steel is cold rolled steel sheet, which is steel sheet that has been cold rolled and produced. In terms of uses, cold rolled steel is used in construction and stainless steel is used in the processing, storage and transportation of foodstuffs. It is worth noting that cold rolled is processed from hot rolled sheet at room temperature, although the sheet is also warmed up during the process because of the rolling, although it is still called cold rolled.

What is the difference between cold rolled stainless steel and hot rolled stainless steel?

Different precision

Compared to hot-rolled stainless steel, cold-rolled stainless steel can be rolled thinner strips, the current thinnest hot-rolled can be rolled about 0.78mm strip, while cold-rolled can be rolled 0.007mm metal foil cold-rolled dimensional accuracy is higher, the thickness accuracy of hot-rolled can generally reach 5%, while the highest accuracy of cold-rolled can reach 0.6%.

Different production processes

Cold rolling is rolled after the hot rolled strip has been pickled. The surface is smooth and free of iron oxide, and by controlling the surface of the rolls, it is possible to produce steel sheets in various surface states. At the same time, cold rolling can obtain a variety of different performance requirements of the steel sheet properties through the control of the press down rate or flattening elongation.

Cold rolled stainless steel differs from hot rolled stainless steel in many ways. Hot-rolled stainless steel can destroy the casting organization of the ingot, refining the grain of steel, and eliminate microstructural defects, so that the steel organization is dense, mechanical properties are improved. All in all, hot rolling and cold rolling are profile or steel forming process, they have a great impact on the organisation and properties of steel, steel rolling mainly hot rolling, cold rolling is only used for the production of small sections and thin plates.

What are the requirements for rolling stainless steel?

Compared with ordinary carbon steel hot rolling, stainless steel rolling technology and process know-how, mainly in the inspection and cleaning of ingot billets, heating methods, roll hole design, rolling temperature control and product online heat treatment. The inspection and cleaning of ingot billets cleaning line includes: shot blasting, infrared surface inspection, ultrasonic flaw detection and repair grinding wheel machine. The basic requirement for rolling stainless steel is that stainless steel needs to have good strength and toughness to match, excellent low temperature toughness, non-magnetic, good processing, forming and welding properties.

From the above information, do you have a better understanding of Stainless Stell Coil, a product with a wide range of applications? Jiangsu C.J.M. Stainless Steel Group is a supplier and distributor of stainless steel, nickel, steel, aluminium, titanium, brass and bronze with world class production and quality control. Our company strives for excellence, constant innovation and development in the direction of quality. We have strict quality control over any of our products and we strive to give you the best product experience.

The many unique advantages of stainless steel make it a strong candidate for material choice. Because of the high initial cost of stainless steel, engineers, specification personnel, and designers often underestimate or ignore these values. However, stainless steel is often the best value option over the life of a project. Here, let me tell you the benefits of stainless steel.

 

Here is the content list:

l  The corrosion resistance

l  High and low temperature resistance

l  Easy to manufacture

l  Strength

l  Aesthetic appeal

l  Health performance

l  Life cycle characteristics

 

The corrosion resistance

Do you know that stainless steel is corrosion-resistant? This metal can withstand corrosion, rust, water stains, etc. This also makes the metal ideal for any area where extreme temperatures and pressures are possible.

 

When making stainless steel coil, chromium is added, which combines with oxygen in the air to form a thin film on the metal surface. The film quickly repairs itself when damaged, making the metal resistant to corrosion and rust. The corrosion resistance of stainless steel is further improved by the addition of nickel, titanium and molybdenum.

 

High and low temperature resistance

Some grades are resistant to scaling and maintain high strength at high temperatures, while others exhibit exceptional toughness at low temperatures.

 

Easy to manufacture

Most stainless steels can be easily cut, welded, shaped, machined and manufactured.

 

Strength

The cold work hardening properties of many stainless steels can be used in the design to reduce material thickness, weight and cost. Other stainless steels can also be heat-treated to make high-strength components.

 

Aesthetic appearance

Stainless steel can be used for many surface treatments. It is easy and simple to maintain, resulting in a high-quality, pleasant appearance. One of the main reasons homeowners choose stainless steel for their homes is the appearance of the metal. It is stylish with a classical and modern touch. Fortunately, this metal is not only beautiful, but also powerful.

 

There's no denying that stainless steel just looks good. After all, there's a reason homes with stainless-steel appliances are more popular than homes without them.

 

Health performance

The cleanliness of stainless steel pipe makes it the first choice for hospitals, kitchens, food and pharmaceutical processing equipment. Stainless steel is one of the most hygienic materials and does not support the growth of bacteria and other pathogens. Even better, the stainless steel is easy to clean and maintain, with a gentle wipe with an all-purpose cleaner followed by a quick polish along the texture to make it shine. Because stainless steel has low maintenance costs and is easy to clean, it is ideal for hospitals, kitchens and other places that need cleaning.

 

Life cycle characteristics

Stainless steel is a durable, low maintenance material and is often the cheapest choice in life cycle cost comparisons.

 

With so many different types of metals on the market, it can be confusing to choose the one that is right for your home. But for all the advantages stainless steel has, choosing the right metal is a no-brainer. Not only is stainless steel beautifully streamlined, but the metal is amazingly versatile and cheap. In addition, metals are promoted as easy to form and are a great choice for many projects.

Type 304 stainless steel, a chromium-nickel material, resists corrosion caused by water, heat, saltwater, acids, minerals, and peaty soils. Type 316 stainless steel has a higher nickel content than 304 stainless, plus molybdenum, for even greater corrosion resistance.

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Stainless Steel 304 price per kg Origin Price in INR (per kg) Price in USD (per kg) Price in Euro (per kg) SS 304 price per kg in India: Indian: Rs 195/-$2.85: €2.43: SS 304 price per kg in Japan: Japanese: Rs 250/-$3.65: €3.12: SS 304 price per kg in UK / Europe: European: Rs 300/-$4.38: €3.74: SS 304 price per kg in USA: USA: Rs 350/-$5 ...

Stainless Steel Plate SS 347 Sheet, For Industrial, 5-200 mm ₹ 410 / Kilogram. Mukesh Steel India. Contact Supplier. ASTM Stainless Steel 310 Sheets, Thickness: 0-1