What Temperature Range Should You Know for Twin-End Bolts?

In the harsh high and low temperature operating environments of industrial equipment, the temperature adaptability of fasteners directly determines the overall operational stability of the equipment. As a core fastening component for flange connections, the temperature resistance of the Twin-End Bolt material is a key factor in selecting the appropriate type for the operating conditions. The temperature tolerance range of different stainless steels and alloys directly affects the safety and service life of these parts.

Stainless steel is mainly divided into austenitic, martensitic, ferritic, duplex, precipitation-hardening, and high-temperature resistant stainless steels. The properties of each type differ significantly. Two-Ended Screws can be matched with corresponding base materials according to the actual temperature environment, thus adapting to the complex operating conditions in various fields such as petrochemicals, energy, and shipbuilding, and avoiding safety hazards caused by improper material selection.

Austenitic stainless steel is a commonly used base material for making Two-End Studs. According to relevant national standards, 304 and 316 stainless steels have stable tensile strength below 100℃, but their yield strength gradually decreases with increasing temperature. Use above 400℃ is not recommended. In low-temperature environments, 304 stainless steel can withstand -200℃, 316 stainless steel can withstand -200℃, and bolts can withstand -60℃. Temperature limits must be carefully controlled to avoid the risk of breakage.

Both-Ended Screws made of austenitic stainless steel have clear usage restrictions in high and low temperature environments. Long-term operation must be controlled below 400℃, as supercritical temperatures can easily lead to intergranular corrosion. For temperatures exceeding 525℃, carbon content must be strictly controlled. For temperatures below -200℃, impact testing is required. Models with nylon protective structures are suitable for temperatures ranging from -50℃ to 150℃.

For applications involving both corrosion and high temperatures, duplex stainless steel effectively enhances the overall performance of M6 Double-Ended Dowel Screws. 2205 stainless steel withstands temperatures up to 315℃, while 2507 stainless steel withstands temperatures up to 300℃. Both exhibit outstanding corrosion and pitting resistance, making them suitable for high-pressure pipelines, offshore platforms, desulfurization equipment, and other applications, meeting high-strength fastening requirements.

Precipitation-hardening stainless steel and martensitic heat-resistant steel can be used for Twin-End Bolt fabrication in medium- and high-temperature environments. 17-4PH balances strength and corrosion resistance, 410 stainless steel has a maximum temperature resistance of 800℃, and S47310 has a maximum temperature resistance of 600℃. These are suitable for freshwater, humid air, and conventional high-temperature equipment, ensuring stable flange connection structures.

Alloy structural heat-resistant steel and nickel-based alloy steel provide material solutions for Threaded Rods operating in ultra-high temperature conditions. 310S can withstand temperatures up to 1035℃, while 904L can withstand temperatures as low as -198℃. Nickel-based alloys such as Inconel 718 and MONEL K-500 are suitable for extremely harsh temperature environments in aerospace, gas turbines, and chemical equipment.

Domestic high-temperature alloy fasteners have clearly defined temperature standards, with different grades of materials withstanding temperatures between 400-800℃. Double-head Studs selected with corresponding alloy materials can be precisely matched to boilers, gas turbines, and offshore equipment, avoiding problems such as high-temperature failure and low-temperature brittleness.

High-temperature resistant Double-Headed Machine Screws are widely used in heavy industry, petroleum machinery, aerospace, and furnace equipment, while low-temperature resistant models are suitable for offshore platforms, wind power equipment, and deep-water operation equipment. Properly controlling the temperature resistance parameters of the materials and careful selection planning are essential to maximizing component performance and ensuring the long-term safe operation of industrial equipment.

Our Twin-End Bolts are custom-manufactured according to strict temperature resistance standards for various operating conditions, covering a variety of materials including austenitic steel, duplex steel, and nickel-based alloys. They are suitable for complex environments ranging from ultra-low to ultra-high temperatures, possessing stable tensile strength and corrosion resistance, and precisely solving the fastening challenges of flange connections under extreme temperatures. We welcome customers from all industries to inquire and purchase, providing suitable fastening solutions for your equipment.