Carbon Steel Seamless Tube vs Stainless Steel Seamless Tube


The difference between carbon steel seamless tube and stainless steel seamless tube mainly refers to the difference in design rules between carbon steel and stainless steel, which means that the design rules of these two types of steel cannot be used together. These differences are summarized as follows:

Carbon steel

1. Ordinary steel is carbon steel, that is, an iron-carbon alloy. According to the level of carbon content, it is divided into low carbon steel seamless tubes (called wrought iron), medium carbon steel seamless tubes and cast iron. Generally, those with a carbon content of less than 0.2% are called low carbon steel seamless tubes (mild seamless tube), commonly known as wrought iron or pure iron; those with a content of 0.2-1.7% are called steel; those with a content greater than 1.7% are called pig iron.

2. It is generally used on metal parts that require strength, hardness and wear resistance, such as cutting tools, steel cables, piano wires, springs and knives , etc. After being treated, the parts usually need to be treated and tempered. The higher the carbon content of the steel, the higher its hardness, strength and wear resistance after heat treatment. Carbon steel is divided into high carbon steel, medium carbon steel and low carbon steel; according to its characteristics, high carbon steel is hard and brittle, and low carbon steel is soft and ductile.

Stainless steel

1. There are many kinds of seamless stainless steel tubes, which refers to alloy steels with Cr content greater than or equal to 13% and stainless steel in the atmosphere. There are austenitic stainless steel seamless tubes, ferritic stainless steel seamless tubes, martensitic stainless steel seamless tubes, etc. Seamless stainless steel tubes usually don’t have magnetism, but they’re not quite right. Austenitics have no magnetism, unlike ferrites, but they are relatively weak. Different stainless steel seamless tubes have different corrosion resistance and different corrosion resistance in different media.

2. In terms of corrosion resistance. In practical applications, seamless stainless steel tubes have excellent various properties which cannot be replaced by other types of steel. For example, some high temperature resistant stainless steel seamless tubes and the excellent surface characteristics of stainless steel seamless tubes are widely used for decoration. The materials, along with the excellent mechanical properties of seamless stainless steel tubing, make it used in various manufacturing industries.

The design rules for stainless steel cannot be used for carbon steel because there are 3 fundamental differences between stainless steel and carbon steel:

1. Stainless steel undergoes work hardening during cold working, for example, it exhibits anisotropy during bending, that is, the transverse and longitudinal properties are different. The strength increased by work hardening can be used, but if the bending area is small compared to the total area and this increase is ignored, the increased strength may increase the factor of safety to some extent.

2. The shape of the stress/strain curve is different. The yield strength of stainless steel is approximately 50% of the yield strength. As for the minimum value specified in the standard, the yield strength value is lower than that of medium carbon steel.

3. Stainless steel has no yield strength, usually expressed as ó0.2, the yield strength is taken as an equivalent value.

Hunan Standard Steel Co., Ltd:
Husteel Industrial Group:
Address: 22nd Floor Golden Tower, Changsha West International Central Mansion, Yuelu District, Changsha, Hunan, China
Postcode: 410205
Tel: 0086-731-88787781
Email: [email protected]
Seamless steel tube:
Stainless steel tubing:

Husteel Industry Group is one of the leading seamless pipe and welded pipe manufacturers and suppliers serving various industries with multiple pipe types, grades, diameters and lengths.

Hunan Standard Steel Co., Ltd as a member of Husteel Industry Group, which has a complete production and sales system to serve our customers. Iron and steel as the core business of Hunan Standard Steel, manufacturing high-end, high value-added steel products.

This press release was published on openPR.


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