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 Changzhou Tianzhan Steel Pipe Co., Ltd

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Why can't 16Mn tensile yield meet the national standard?

Back to list Source: Release date: July 8, 2020

16Mn, namely Q345B or q355b, is a common steel pipe raw material in automobile industry. The 16Mn seamless steel pipe used in automobile parts has always been a problem. When the elongation is required, the tensile strength and yield are difficult to meet the national standard. As shown in the figure below, The tensile strength is difficult to reach 470-630mpa, The yield strength is difficult to reach 345mpa, which is often lower than the national standard 20-30Mpa Tianzhan steel pipe, after many years of tests, has successfully overcome this problem, The tensile strength and yield strength of the steel tube can reach and exceed the national standard on the basis of the elongation of 38%.


 Tensile, yield and elongation standards of Q345B in GBT 8163

Tensile, yield and elongation standards of Q345B in GB / T 8163

Made by sky show 16Mn seamless steel pipe How to ensure that the yield and tensile strength meet the national standard? It mainly consists of three aspects: 1) excellent heat treatment equipment; 2) Select Jiangsu Youte round steel; 3) Iatf16949 automobile quality system certification ensures the traceability of steel pipe manufacturing.


1. Excellent heat treatment equipment

 30 m long heat treatment furnace & mechanical property test

three 0 m long heat treatment furnace & mechanical property test

The 30m long heat treatment furnace reformed by Tianzhan has automatic temperature control and temperature difference ± 2℃。 Precise control of mechanical properties of steel pipe, and equipped with physical laboratory, there are requirements 16Mn seamless steel pipe The tensile test is carried out for each batch to ensure that the tensile strength and yield meet the national standard while the high elongation is ensured.

 Report on mechanical properties of 16Mn seamless steel pipe

Mechanical property report of 16Mn seamless steel pipe (elongation 38%, tensile strength 515mpa, yield 380MPa, unit 1n / mm) ²= 1MPa


2. Select Jiangsu Youte round steel

16Mn seamless steel pipe All of them are made of excellent round steel from large factories, and each batch is attached with quality assurance certificate to ensure the traceability of raw materials.

 16Mn round steel

16Mn round steel


3. Iatf16949 automobile quality system certification

In addition, we have obtained IATF 16949 automobile quality system certification for many years. 16Mn seamless steel pipe is widely used in many parts of automobile, especially good at making automobile steel pipe with technical requirements. The third party independently inspects the overall production process and the traceability required by the automobile quality system every year.

 IATF16949

  IATF 16949

The above are the yield and tensile strength of 16Mn seamless steel pipe to meet the national standard Tianzhan three guarantees. Are you also an auto parts manufacturing industry, have you had the same trouble? Some words may as well give us a message, we can give you a targeted solution.

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