The JIS G3445 STKM13B carbon steel tubes are seamless steel tubes designed for general mechanical and automotive structural applications. These tubes are manufactured to meet the Japanese Industrial Standards (JIS) and are known for their excellent mechanical properties and durability.

Chemical Composition:

The chemical composition of STKM13B carbon steel tubes is strictly controlled to ensure the material's quality and performance. The typical chemical composition includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), and iron (Fe). The maximum carbon content is typically around 0.25%, with manganese content not exceeding 0.90%. Silicon is present up to 0.35%, and the residual elements such as phosphorus and sulfur are kept to a minimum to enhance weldability and ductility.

Mechanical Properties:

The mechanical properties of STKM13B carbon steel tubes are characterized by their tensile strength, yield strength, and elongation. The minimum tensile strength is 370 MPa, with a minimum yield strength of 235 MPa. The elongation percentage is a minimum of 25%. These properties make STKM13B tubes suitable for applications requiring both strength and flexibility.

Heat Treatment Conditions:

STKM13B tubes are available in various heat treatment conditions, including cold-drawn and stress-relieved. These conditions enhance the material's mechanical properties and improve its dimensional stability. The specific heat treatment process is tailored to meet the application's requirements, ensuring the tubes perform reliably under various operating conditions.

Production Size Range:

TJC Steel Group offers STKM13B carbon steel tubes in a wide range of sizes to cater to different industrial needs. The tubes can be produced with outer diameters ranging from 6mm to 219mm and wall thicknesses from 0.5mm to 10mm. The length of the tubes can also be customized, with options for fixed lengths or random lengths, depending on the client's specifications.

Low-Temperature Impact Test:

STKM13B tubes are subjected to a low-temperature impact test to ensure their toughness and reliability in cold environments. The test is conducted at -10°C, and the tubes must meet specific impact energy requirements to pass the test, demonstrating their suitability for use in low-temperature applications.

Main Applications:

Due to their excellent mechanical properties and versatility, JIS G3445 STKM13B carbon steel tubes are widely used in various industries. Common applications include automotive parts, hydraulic systems, pneumatic cylinders, mechanical structures, and general engineering purposes.

TJC Steel Group Supply Cases:

TJC Steel Group has extensive experience in supplying high-quality STKM13B carbon steel tubes to clients worldwide. One notable supply case involved the delivery of precision-engineered STKM13B tubes for a major automotive manufacturer's exhaust system components. The tubes were required to meet stringent specifications for strength and corrosion resistance. TJC Steel Group's expertise in material selection and quality control ensured the successful delivery of the product, which met the client's expectations in terms of performance and reliability.

In conclusion, JIS G3445 STKM13B carbon steel tubes are a reliable choice for applications requiring robust mechanical properties and durability. TJC Steel Group's commitment to quality and customer satisfaction makes it a trusted supplier of these tubes for various industries.