5 шт. Велосипедный Спорт Звездочка Шурупы 7075 Алюминий сплав 8.5 мм двойной звезду Колеса Болт дорога MTB велосипеда диск Шурупы для шатуны

Описание

Product Parameters:

7075 aluminum chainring bolt

Aluminum alloy chainring bolt

Double chainring bolt: about 8.5MM / 0.33in (nut length!)

Ultra-light 7075 chainring bolt

Color: black, red, blue, green, purple, gold, silver

Word Explanation:

Zinc is the main alloy element in 7075.

Add some magnesium to the alloy containing 3% -7.5% zinc, MgZn2 with significant strengthening effect can be formed then.

The heat treatment effect for this alloy is far better than aluminum-zinc binary alloy.

If zinc and magnesium content in the alloy is increased, the tensile strength will be further improved.

But its ability to resist corrosion and exfoliation?corrosion will be declined.

Through heat treatment, it can reach a very high strength.