ASTM A193 Grade B8T, These are fasteners manufactured from titanium-stabilized 321 grade stainless steel. Thanks to their high temperature resistance and oxidation resistance, they are preferred in applications where thermal expansion, metal fatigue, and corrosion are critical. B8T studs offer superior performance in systems exposed to thermal cycling, especially in equipment operating in the 400–900 °C range.
| Feature | |
| Standard | ASME |
| Material | Stainless Steel |
| Type | Stud Bolt |
| Quality | ASTM A193 Grade B8T |
| Coating | It is usually uncoated. |
| Tooth Type | Metric Coarse Thread, Metric Fine Thread – UNC / UNF (Inch) |
| Measurement Range | From M10 to M100, 1/2″ – 3″Z |
| Production Method | Grinding or machining |
| Thread Direction | Right-Hand Thread (standard) / Left-Hand Thread (upon request) |
- Petrochemical plants and refineries
- Power plants and heat exchangers
- Flange pipe systems operating at high temperatures
- Boiler and furnace connections
- Exhaust and manifold systems
- Process equipment subjected to continuous thermal cycling
- Assemblies where preventing carbide buildup is critical
- ISO 9001:2015 Quality Management System
- ISO 14001:2015 Environmental Management System
- ISO 45001:2018 Occupational Health and Safety Management System
- EU Declaration of Conformity (PED) certificate (Compliance with the Pressure Equipment Directive)
- Our production processes, DIN, EN, ISO, and ASTM is fully compliant with the standards
- Upon request EN 10204 3.1 certificate is provided
B8T, is a high temperature and corrosion resistant stud made of AISI 321 stainless steel. Thanks to its carbide precipitation resistant structure, it provides long-lasting performance against thermal expansion and fatigue.
It is widely used in systems continuously exposed to heat, particularly in thermal power plants, boiler systems, exhaust systems, and chemical process equipment. Its stable structure ensures secure connections under high temperatures.
Both grades are based on 18-8 stainless steel. However, B8T, thanks to titanium stabilization prevents carbide precipitation at high temperatures and Offers longer-lasting structural stability compared to B8. This difference is particularly important in thermal cycles.
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