Turn brass - what do you have to pay attention to?

Brass is often used in the form of brass pipes or brass profiles. If and when you can bend and reshape these profiles and what you have to pay attention to, explains this article.

Most widespread types of brass

  • brownish brass (zinc content up to 20%)
  • light yellow to white brass (zinc content over 36%)
  • as cast alloy or wrought alloy
  • Brass and gunmetal

Brass is an alloy that basically consists of copper and zinc as main components. The lower the copper content, the higher the brittleness of the material. Brass and gunmetal mean that even a certain amount of lead is contained in the alloy.

Each type of brass has different mechanical properties, which also affect the bending behavior. As a result, varying degrees of bending angle are possible with different types of brass before the material breaks or breaks.

Reshape brass

Brass can also be reshaped by hand. This is especially true for brass tubes of smaller diameter and with small wall thicknesses.
However, because of the relative brittleness of the material, brass must be heated before forming. After that, the required effort for bending is not very large.

Soft annealing of brass

The so-called soft annealing is carried out in a temperature range of about 450° C to about 600° C. The soft annealing very effectively prevents the cracking of the material, it can also be bent very tight radii in the hot state.

Brass should not be red-hot. Exceeding the optimum temperature range, in turn, leads to poorer results and less durability of the material after forming.

For soft annealing a burner with appropriate power is needed. As a rule, only the bending edge is annealed, and in the case of pipes, the bending area.

Stability loss after annealing

Soft-annealed components do not retain their original hardness even after cooling. They stay soft. This can be a serious disadvantage, especially in heavily loaded areas. For pipes, this problem is negligible in most cases.

Tips & Tricks

The processing of copper corresponds exactly to the machining of brass during forming. However, the special material properties and lower strengths of copper still have to be considered here.

Video Board: Cleaning Copper Blush Off Of Brass After Soldering And Pickling