Fasteners

Low Carbon Steel: Generally contains less than 0.25% carbon content. It exhibits excellent formability and durability properties, and performs exceptionally well in metalworking and welding applications. It is also more economical compared to other steel raw materials. Low carbon steel has a tensile strength ranging from 60,000 psi to 80,000 psi (410 MPa to 550 MPa).

All types of screws and nuts with hardness grades 4.6, 4.8, and 5.8 are typically manufactured from low carbon steel, such as steel grades 1006, 1010, 1016, 1018, 1022, and 1035, which are classified under this category of raw materials.

Medium Carbon Steel: Contains carbon content between 0.25% to 0.60%. This type of steel can undergo heat treatment processes to increase hardness and has a tensile strength ranging from 100,000 psi to 120,000 psi (690 MPa to 830 MPa). Fasteners with hardness grade 8.8 are manufactured from medium carbon steel, including steel grades 1038, 1541, 5132, and 5135.

Alloy Steel: Steel that contains additions of boron, manganese, chromium, silicon, and other elements to enhance the alloy steel's capabilities in terms of hardness, formability, toughness, and high-temperature resistance. This type of steel has a tensile strength exceeding 150,000 psi (1034 MPa). Alloy steel is used in manufacturing products with hardness grades 10.9 and 12.9.