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Low cost, high strength, and performance can be enhanced through heat treatment. It is usually applied to non-corrosive environments such as construction engineering and mechanical manufacturing.
Stainless steel bolts have strong corrosion resistance. Austenitic stainless steel (such as 304 and 316) also possesses high temperature resistance and weldability. It is usually applied in corrosive environments such as those in the chemical industry, shipping, and food processing.
Alloy steel is added with elements such as chromium and molybdenum to enhance its strength, high-temperature resistance and fatigue resistance.
The performance grade is marked as 14.8U, 15.8U, etc. It is formed into bainite structure through isothermal quenching, and it is lightweight with high clamping force. It is usually used in key weight-reduction scenarios such as engines and chassis.
Copper and copper alloy fasteners: With good conductivity (such as T2 brass), used in electronic equipment. Titanium alloy fasteners are lightweight and highly durable, but they are costly. They are used in medical devices or aerospace applications.
In acidic or high-pressure conditions (as per NACE MR0175 standards), use duplex stainless steel (such as 2205) or nickel-based alloys (such as Inconel 718) for bolts to ensure the sealing performance of the flange connection.
The flange bolts of the heat exchanger must comply with the TEMA standard. In some scenarios, the insulation design needs to be adjusted to accommodate high-strength materials.
Aviation titanium fasteners must pass a -196โ low-temperature test to ensure the reliability of key components such as LNG storage tanks.
The bolts of the high-speed train bogie need to pass a temperature shock test ranging from -40โ to 120โ. The material is carburized steel 20CrMnTi.
The hot stamping steel B1500HS bolts are used in automotive safety components, with tensile strength exceeding 1500 MPa, enhancing the collision energy absorption capability.
Precision bolts of M3-M48 specifications (such as in accordance with ISO 4014 standard) are suitable for assembly of semiconductor equipment.
The foundation ring bolts must meet the ISO 4014 tolerance grade and have a shear strength of โฅ 600 MPa.
PEEK material bolts are used for fixing PCB boards, featuring both high-temperature resistance (260โ) and electrical insulation properties.
| Special Material Bolts Available Types | |
|---|---|
| Material Classification | Material Grade |
| Ultra High Strength Stainless Steel | XM-19ใ904Lใ254SMOใ317Lใ347Hใ1.4529ใ25-6MO |
| Duplex Stainless Steel | F51ใF53ใF55ใF60ใ329ใ2205ใ2507ใS31803ใS32760ใ1.4460ใ1.4462 |
| Titanium Alloy | TA 1 โ TA 19 TB 2 โ TB 8 TC 1 โ TC 17 |
| Pure Nickel Material | Nickel200 (UNS N02200) Nickel201 (UNS N02201) Nickel270 |
| Non-magnetic Stainless Steel | 0Cr21Ni6Mn9Nใ0Cr16Ni22Mn9Mo2ใ1.4436 |
| Hastelloy | C276ใC22ใC59ใC4ใC2000ใB2ใB3ใB4ใG35ใX |
| Monel | 400ใ404ใK500ใR405 |
| Inconel | 601ใ617ใ625ใ686ใ690ใ718ใ725ใX750ใ804ใ840 |
| Incoloy | 20ใ800ใ800Hใ800HTใ801ใ810ใ825ใ890ใ901ใ925ใ926 |
| Nimonic | 75ใ80Aใ86ใ90ใ95ใ100ใ105ใ115 |
| Aerospace Material Specification | 4676ใ5510ใ5528ใ5542ใ5592ใ5646ใ5651ใ5716ใ5726ใ5651ใ5662ใ5643 |
