What is the difference between stainless steel and stainless iron?

The difference between stainless steel and stainless iron is the level of nickel content.
Magnetic is iron, no magnetic is stainless steel, this statement is completely wrong, there are four major systems in stainless steel, austenite, martensite, ferrite and duplex, of which austenite is not magnetic, but in processing due to the loss of certain elements, resulting in a slight magnetic.
Many everyday items that appear on the market today are actually "stainless steel" products, despite the signage saying they are stainless steel. So, what is the difference between stainless steel and stainless steel? First let's look at what stainless steel and stainless iron are.

Stainless steel is generally a general term for stainless steel and acid-resistant steel.
Where stainless steel refers to steel that is resistant to corrosion by weak media such as atmosphere, steam and water.
It has many types with different properties and has gradually formed several major categories in the course of development.
According to the organizational structure, divided into martensitic stainless steel (including precipitation hardening stainless steel), ferritic stainless steel, austenitic stainless steel and austenitic plus ferritic duplex stainless steel and other four categories.
According to the main chemical composition of steel or steel in certain characteristic elements to classification, divided into chromium stainless steel, chromium-nickel stainless steel, chromium-nickel-molybdenum stainless steel and low-carbon stainless steel, high molybdenum stainless steel, high purity stainless steel, etc.. 
Classification according to the performance characteristics and uses of steel, divided into nitric acid resistant stainless steel, sulphuric acid resistant stainless steel, stress corrosion resistant stainless steel, high strength stainless steel, etc..
Classified by the functional characteristics of the steel, divided into low temperature stainless steel, non-magnetic stainless steel, easy to cut stainless steel, super plastic stainless steel, etc.

The so-called "stainless steel" is recycled scrap iron, lead, steel, etc. by the second back to the furnace processing, through the de "magnetic" treatment and become, the traditional detection method is to use a magnet, and this product with the traditional method is impossible to identify, natural is concealed, muddle through. 

Identification from the mark: 
Many stainless steel supplies have steel marks on the surface, for example: 13-0, 18-8, etc. The number in front of the short line indicates the amount of chromium the product contains, and the number behind the short line indicates the amount of nickel contained in the product. For example, 13-0 means that it contains only chromium and no nickel, commonly known as "stainless steel"; while 18-8 means that the product contains chromium and nickel, which is stainless steel. Negotiating by sound: Knocking on a stainless steel or 'stainless iron' product can also be used as a method of judgement. Attracting with a permanent magnet: true stainless steel is not attracted to magnets, while 'stainless' can be attracted to magnets. Despite the differences in properties between 'stainless' and stainless steel, both are significantly more resistant to rust and corrosion than wrought iron and cast iron cookware.
Zhejiang Bewell® Steel Industry Co.,Ltd.is not only able to produce excellent stainless steel seamless pipes, but also has a unique production concept. We insist on standardized, systematic and standardized production, implement a full range of quality management strategies to ensure product quality, full process quality inspection and tracking, and every small link is not spared.