667 is a kind of stainless steel, some people also call 667 stainless steel line for the ordinary 201 stainless steel line, or D667 stainless steel line, his content of nickel is relatively low only 1% or so, but the amount of copper is relatively high, is a good toughness of low nickel stainless steel, (fiadar) has 667 stainless steel l
The standard 201 contains 3.5~5.5 nickel, while the current market contains 3.5~4.0 nickel, which is generally referred to as 202 nickel. The material 667 is 0.8-1. If all according to the standard, 201 price is high, acid corrosion resistance is better. What 201 says on the market at present may be about the same as 667,
nickel content is about 1.0, specific material can ask nickel content to define.
The statement on the home has misdirect, the 201 stainless steel that spot stock on the market now tests contain nickel to also have 0.8 to control only, (unless the client asks to decide to produce the makings that contains nickel standard) and 667 contain manganese is 13.5%, it is 201 2 times, unit price also is 201 2
201 is harder. Find the following information by the way, for reference.
1, specification: commonly used stainless steel plate is divided into 201 and 304 two models, the actual composition is different, 304 quality is better, but the price is expensive, 201 poor. 304 is imported stainless steel plate,201 is domestic stainless steel plate.
2. 201 is composed of 17cr-4.5 ni-6mn-n, which is the replacement steel of section Ni steel 301. Magnetic after cold processing, used in railway vehicles.
3, 304 composition of 18cr-9ni, is the most widely used stainless steel, heat resistant steel. Used in food production equipment, xitong chemical equipment, nuclear energy, etc.
4, 201 is high manganese, the surface is very bright with dark bright, high manganese easy to rust. 304 contains more chromium, the surface is matte, not rust. Put the two together, there is a comparison. The most important thing is that the corrosion resistance is different. 201 has poor corrosion resistance, so the price
is much lower.
The difference between 201 and 304 is nickel. And the price of 304 is more expensive now, but 304 at least can ensure that the process of use will not rust. (stainless steel potion can be used for experiment)
6, stainless steel is not easy to rust because the surface of the steel body formed rich chromium oxide can protect the steel body,201 material belongs to high manganese stainless steel than 304 hardness, high carbon and low nickel.