All About High-Temperature SS Fasteners
Not always are fasteners utilized in straightforward construction tasks High-Temperature Fasteners are frequently required for creating new devices and technologies that will subject their fasteners to extremely high temperatures. Fasteners must be able to withstand harsh conditions while still performing in these elevated temperatures.
High-temperature fastener creation is a very challenging process that calls for sophisticated production and design concepts and techniques. The good news is that decades of innovative research and development in fastener production have led to the development of a range of fasteners for high-temperature applications – materials that can perform dependably even in extremely hot conditions.
How Fasteners Are Affected by High Temperatures
What specific effects does high heat have on metal fasteners? You might think that melting poses the biggest hazard to all types of metals, yet melting won’t happen until temperatures reach the quadruple digits, or 1,000 degrees Fahrenheit or much higher. Oxidation, which is rapid corrosion and rusting brought on by intense heat, is the more frequent threat to metal.
SS High-Temperature Fasteners When a metal fastener expands, the holes it was driven into start to feel the pressure. Additionally, the metal will flex and loosen up inside the hole if it then cools. When metal fasteners are used in machinery that operates hot but cools off when not in use, this is a normal issue.
The Uses of SS High-Temperature Fasteners
Steel 309 and 310 stainless
Compared to the alternatives, these two stainless steel alloys contain more chromium and nickel. What distinguishes them from one another? The additional corrosion resistance of the 310 stainless steel makes it perfect for usage in saline environments.
630 stainless steel
Due to a procedure that involves cold working and low-temperature aging, this alloy is extremely hard. Due to its hardness, strength, and good ductility, stainless steel 630 is one of the alloys that is used in high-temperature fasteners the most frequently.
A-286
This alloy contains iron, nickel, and chromium. Although it starts to degrade at temperatures of 1,300 degrees Fahrenheit and above, it can withstand the pressures of oxidation at high temperatures.
Nickel
While you can only utilize nickel up to temperatures around 1,800 degrees, find a nickel alloy for temperatures above that.
Choose the Correct Fasteners
How can you locate the best fasteners for applications involving high temperatures? Finding out how hot the atmosphere will be is the first step. Some of the temperature restrictions you might encounter were discussed in the section above. As previously indicated, A-286 can tolerate temperatures of up to 1,300 °F, whereas nickel can withstand temperatures of up to 1,800 °F without losing strength.
Investigate your ceramic options if you require fasteners that can withstand even greater temperatures. Even above 3,000 degrees Fahrenheit, alumina and zirconia can endure temperatures significantly higher. However, these materials don’t offer as much strength as some of your other alloy possibilities, so there is a trade-off.
