Stainless steel elbows are fittings that change the direction of pipelines. Stainless steel elbows are divided into three most commonly used angles: 45 °, 90 °, and 180 °. In addition, other abnormal angle elbows such as 60 ° are also included according to engineering needs. Different elbow fittings have different materials, and the main difference between stainless steel elbows and carbon steel elbows is the material. The chemical composition they contain will keep the surface of the elbow from rusting for a long time and is not easily corroded. What are the materials of stainless steel elbows?
1. Ferritic stainless steel
The matrix is mainly composed of ferrite structure (alpha phase) with a body centered cubic crystal structure, which is magnetic and generally cannot be hardened by heat treatment, but cold working can slightly strengthen it in stainless steel.
2. Austenitic stainless steel
The matrix is mainly composed of austenite structure (γ phase) with a face centered cubic structure, which is non-magnetic and mainly strengthened (and may lead to certain magnetism) by cold processing in stainless steel.
3. Austenitic ferritic (duplex) stainless steel
A stainless steel with a matrix consisting of both austenite and ferrite phases (with a lower phase content generally greater than 15%), magnetic properties, and can be strengthened through cold processing.
The material of stainless steel elbows is to ensure that the elbows do not have quality problems, guarantee the service life of the elbows, and ensure that the elbows can play an important role during use. Stainless steel comes in different types, each with its own composition and properties.
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