STKM17A Steel Grade Characteristics, Chemical Composition, Applications, Mechanical Properties 

STKM17A is a steel pipe material according to Japan's JIS G 3445 standard, primarily used for mechanical structure pipes. A similar ASTM grade to STKM17A might be ASTM A513 Type 5 or ASTM A519 Grade 1020. In the DIN standard, comparable grades could be St 37-2 of DIN 2393 or St 44-2 of DIN 2391. This steel is manufactured using a cold drawing process, resulting in a smooth surface and uniform mechanical properties, making it suitable for various industrial fields. Below is a summary of the characteristics, properties, applications, chemical composition, and mechanical properties of STKM17A.

Characteristics and Properties

Strength and Toughness: STKM17A offers moderate strength and toughness, ensuring high reliability as a mechanical component.

Workability: Being manufactured by cold drawing, it has a smooth surface and high precision, making it suitable for further processing.

Weldability: It has appropriate weldability and can be joined using various welding methods.

Durability: It has moderate durability, performing well in general industrial environments.

Chemical Composition

Carbon (C): ≤ 0.10%

Manganese (Mn): 0.30~0.60%

Phosphorus (P): ≤ 0.040%

Sulfur (S): ≤ 0.040%

Mechanical Properties

Yield Strength: ≥ 245 MPa

Tensile Strength: ≥ 400 MPa

Elongation: ≥ 23% (based on standard gauge length)

Hardness: ≤ HRB 65

Applications and Uses

Automotive Parts: Used for various structural components such as shafts, arms, links, and frames in vehicles.

Machinery Parts: Applied to general machinery structures, machine frames, and industrial equipment.

Construction: Utilized in building structures, support beams, and pipeline systems.

Furniture: Used for furniture frames and other structural supports.

STKM17A plays an important role in a wide range of applications due to its excellent mechanical properties and workability, especially in components requiring significant mechanical performance.