Qualitative brief introduction of material of stainless steel boiler

The country sets now, food concerns be necessary to agree with food class stainless steel. Cent is domestic things stainless steel 430 (17-0) , 304 (18-8) , 316 (18-10)

Grade. The number before code name makes clear chromic content, the number behind represents nickel content.

430 stainless steel (17-0) : All sorts of 430 pairs of air, clear water, weak acid and weak base can have be able to bear or endure corrode sex, but should compare 304, 316 be able to bear or endure corrode sex is weak. And apply for a long time

, outside meeting has the embroider that happens because of crude element, this also is so called stainless steel namely also can rust for instance, but although 430 stainless steel will be rusty, but be health however

, the biggest question is treatment difficulty is great, drawing is easy rupture. So 430 need not do stainless steel boiler normally, make the goods such as cap more.

304 stainless steel (18-8) : Can resist the oxidation of chemical sex; 304 it is the material that standard of national pressure cooker is necessary to apply pledges, the normative material of stainless steel pressure cooker is namely character

304 above, so Chinese market upward pressure boiler, it is 304 material pledge, all can be at ease apply. And to stainless steel stockpot, wait for day of commonly used boiler, the country still is done not have forcibly

Sexual standard.

316 stainless steel (18-10) : High things is made with the nickel of 10 ％ , in order to make its more via using more fight corrode, this kind of stainless steel calls 18-10 stainless steel, also be " cure namely

With stainless steel " , cent of ion of very rare metal goes out, 316L stainless steel is avirulent, the edible class stainless steel that says to agree with a standard probably material is qualitative.

Above is avirulent, it is the edible class stainless steel that agrees with a standard probably material is qualitative. On the market, also put in the qualitative stockpot of stainless steel material with one poisonous part together. The most serious,

It is to use namely 201, 202 stainless steel material make stainless steel boiler character. Because 201, 202 material qualitative quoted price is lower, the interest abets, make now on the market 201, 202 material are qualitative

Stainless steel boiler is very much exist.

201 probably 202 material are qualitative stainless steel boiler, be poisonous! Why poisonous? Because: Nickel depended on it changing the crystal structure of steel in the first result in stainless steel, in do not become rusty

A when nickel adds in steel chief reason is to make austenite crystal structure namely, be improved next and strengthen chromic passivation mechanism, its are fought ability is corroded to get ascensive between brilliant,

A treatment, but the mechanical performance such as weldability and flexibility improves. Next nickel is not only the element that makes austenite, see more have: Carbon, nitrogen, manganese, copper

Etc. So 201 since nickel content was reduced, also affected the austenite with main stainless steel to make element, be necessary to add the element such as carbon, nitrogen, manganese consequently, and manganese

The metal is attributed to cent to give more serious tantalum. If use 200 departments to make stainless steel boiler, use can adverse to body happening influence for a long time.