Fastener Materials: Understanding Alloys

Fasteners have come a long way since the 200 B.C. concept of the screw; not only have we been able to establish a standard for screw threads for interchangeability (before 1928, screws had to be made by hand), but we have discovered and made metals stronger than ever before. These different types of alloys play vital roles in extreme applications such as air and spacecraft — after all, simple, weak metals simply aren’t an option in situations involving high pressures and temperature fluctuations. Let’s take a look at five types of metal alloys that are commonly used in custom fasteners, micro screws, and custom shoulder bolts the world over.

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• Chromium: Chromium is a metal frequently used in alloys because of its resistance to corrosion. Depending on the material it’s combined with, it can also increase hardness and strength.
• Nickel: Nickel is a metal favored for its ability to increase toughness. Austenitic stainless steels — which describe a complex synthesis of iron, chromium, nickel, and some other metals and nonmetals — often have high additions of nickel because they act as austenite (a solid solution of carbon in a nonmagnetic form of iron) promoters.
• Copper: This metal is used to make materials (such as aluminum) precipitation-hardenable. When combined with steel, copper increases corrosion-resistance; interestingly enough, it does the opposite in aluminum.
• Carbon: This nonmetal alloying element is necessary in the manufacture of steel. The addition of carbon in steel and cast iron alloys increase their strength and hardness.
• Manganese: Manganese is a metal often alloyed to improve strength. On its own, it is not affected very much by heat, which makes it suitable for applications that will be exposed to higher temperatures.

Micro screws pose unique problems because they need to be strong and indestructible despite their size. If you’re looking to buy micro screws, make sure you’re getting ones made from the right materials for your specific needs.

If you want to buy micro screws, US Micro Screw has many options available to suit your needs. Our custom screw services ensure you’re satisfied with your purchase. Give us a call at 1-877-618-7660, or visit https://www.usmicroscrew.com/ today with any questions or inquiries you may have.