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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.
| Material Classification | Material Grade |
|---|---|
| Ultra High Strength Stainless Steel | XM-19, 904L, 254SMO, 317L, 347H, 1.4529, 25-6MO |
| Duplex Stainless Steel | F51, F53, F55, F60, 329, 2205, 2507, S31803, S32760, 1.4460, 1.4462 |
| Titanium Alloy | TA 1 — TA 19 TB 2 — TB 8 TC 1 — TC 17 |
| Pure Nickel Material | Nickel 200 (UNS N02200) Nickel 201 (UNS N02201) Nickel 270 |
| Non-magnetic Stainless Steel | 0Cr21Ni6Mn9N, 0Cr16Ni22Mn9Mo2, 1.4436 |
| Hastelloy | C276, C22, C59, C4, C2000, B2, B3, B4, G35, X |
| Monel | 400, 404, K500, R405 |
| Inconel | 601, 617, 625, 686, 690, 718, 725, X750, 804, 840 |
| Incoloy | 20, 800, 800H, 800HT, 801, 810, 825, 890, 901, 925, 926 |
| Nimonic | 75, 80A, 86, 90, 95, 100, 105, 115 |
| Aerospace Material Specification | 4676, 5510, 5528, 5542, 5592, 5646, 5651, 5716, 5726, 5651, 5662, 5643 |
