JIS g3441 tubes

JIS g3441 tubes

What are JIS G 3441 tubes?

Japan is famous for making all products with high quality following strict standards. The Japanese Engineering Standard was its official standard for evaluating many products for over a century from 1921. It evolved to its present form of JIS or Japan Industrial standards for increasing the material output. JIS specifies the grades of pipes and tubes along with the metals and alloys used to make them.

JIS G 3441 alloy steel tubes made from low-carbon steel are best for applications in machinery, automobiles and others. These tubes have carbon content from 0.13 to 0.43% for their many grades made as per the JIS specifications. Also, most of its grades have the exact content of manganese, silicon, chromium, sulphur, molybdenum and phosphorous.

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JIS G3441 Tubes Specification

JIS G3441 Tubes Properties

What are the grades of JIS G 3441 tubes?

There are seven grades of JIS G 3441 tubes with specific designations, classifications, and compositions. The first SCr420TK grade falls under the chromium steel classification, with the remaining six under the chromium molybdenum steel.

  • JIS G3441 Grade SCM420TK tubes have the composition of 0.18 to 0.23% carbon, 0.65 to 0.85 manganese, 0.15 to 0.35 silicon, 0.90 to 1.20 chromium
  • JIS G3441 Grade SCM415TK tubes have the composition of 0.13 to 0.18 % carbon with the same percentage of manganese, silicon and chromium with additional molybdenum 0.18 to 0.30 % and with 030 % max of phosphorous and sulphur
  • JIS G3441 Grade SCM418TK tubes have a carbon content of 0.16 to 0.21 with the exact composition of SCM415TK
  • JIS G3441 Grade SCM420TK tubes have 0.18 to 0.23 with the same remaining composition
  • JIS G3441 Grade SCM430TK tubes have 0.28 to 0.33 carbon and the same remaining composition
  • JIS G3441 Grade SCM435TK tubes have 0.33 to 0.38, and JIS G3441 Grade SCM440TK tubes have 0.38 to 0.43 carbon and remain the same composition.

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Why are JIS-G-3441 tubes used for machine purposes?

JIS-G-3441 tubes are useful for machine purposes because of being made from low-carbon steel. Also, because of having chromium, molybdenum, manganese and others that have excellent properties. A few other reasons for it include the following:

  • Chromium of around one per cent increases the corrosion resistance for the pipes and tubes to be rust-free.
  • The molybdenum and manganese content increases the strength to withstand high temperatures and pressure in many machine applications.
  • The low carbon content makes it less hard for easy welding and machinability to form pipes and tubes of all sizes and shapes.
  • Easy availability and affordability are the other reasons for JIS G 3441 to be used for machine purposes, among others.

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What are the benefits of JIS G 3441 class 2 alloy seamless steel tubes?

The century-old Japanese standardization for materials started to provide a product certification system in 2004 for metals and alloys. The G denotes the ferrous alloys, and the numbers following it will be as per the test specifications. It includes tests for hardness, flattening, flaring, grain size, decarburization, hydrostatic, etc.

JIS G 3441 class 2 alloy seamless steel tubes benefits include undergoing these tests as per the Japan Industrial Specifications to be of high quality and international standard for use in machine products and others.

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What are buying tips for JUS G3441 grade SCM420tK tubes?

JIS G3441 SCM420TK tubes made from low-carbon alloys are best for making many machine products. The following tips will help buyers to choose the best tubes. among the many available.

  • Check for the carbon content to be within the range and not less or more than it.
  • Verify if the chromium content is over 1% to have high corrosion resistance
  • Check if the tubes have the suitable molybdenum and manganese content to have enough strength required for specific applications.
  • Confirm if the nickel and copper impurities should not be over 0.25 and 0.30 %, respectively
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What is JIS G 3441 steel tube price difference between India and China?

The average price of JIS G 3441 alloy steel tubes in India is around Rs. 400 per kg. But with seven grades available for JIS G 3441 alloy tubes, each will have a specific price in India and China. With low carbon content and chromium, molybdenum, manganese and others, these tubes have high strength and corrosion resistance.

Depending on each grade of JIS G 3441 alloy with different carbon content, the price of its tubes varies in India and China. But it is essential to buy it from experienced and reputed pipe and tube suppliers, to maintain quality for costs.