．   Material Selection   ．   Drawn Wire   ．   Forming   ．   Threading   ．   Heat Treatment   ．   Surface Treatment   ．   Warehousing   ．   Packing   ．   

Heat treatment is a crucial step in fastener production. It involves a controlled heating and cooling process applied to a fastener to alter its mechanical properties and achieve the desired hardness, strength, and durability. At Gofast, we offer various heat treatment options to adjust the process properties and serviceability of fasteners to comply with applicable standards.

Our heat treatment options include:

1. Annealing: Heating the fastener to a specific temperature and cooling it slowly improves its ductility and toughness.
2. Tempering: Heating the fastener to a specific temperature and then quickly cooling it to achieve the desired hardness level.
3. Quenching: Heating the fastener to a specific temperature and then quickly cooling it in a quenching medium, such as water or oil, increases its hardness and strength.
4. Nitriding: Introducing nitrogen to the surface of the fastener improves its wear resistance and hardness.

Heat treatment aims to enhance the mechanical properties of fasteners, such as strength, hardness, toughness, and wear resistance. By adjusting the process performance and service performance of fasteners through heat treatment, we can ensure that they meet the applicable standards of the fastener industry.

At Gofast, we are required to follow common heat treatment specifications, including but not limited to:

• ASTM A193/A193M: This practice covers heat treatment requirements for alloy steel and stainless steel bolt materials used for high-temperature or high-pressure services.
• ASTM A320/A320M: This specification covers heat treatment requirements for alloy steel bolt materials used for cryogenic services.
• ASTM A453/A453M: This specification covers heat treatment requirements for high-temperature bolt materials.
• ASTM A962/A962M: This specification covers heat treatment requirements for bolted materials used at any temperature or pressure.
• ISO 898-1: This specification covers the mechanical properties of carbon steel and alloy steel screws, bolts, and studs, including requirements for materials, tensile strength, yield strength, elongation, and impact strength.
• SAE J1199: This specification covers the heat treatment requirements for steel raw materials used in screw manufacturing.

We work with various outsources to ensure that our fastener heat treatment meets the highest quality and precision standards. With our commitment to excellence and customer satisfaction, we are the preferred source of heat-treated fasteners for customers in the fastener industry worldwide.