Technical requirements and scope of the ASTM B927 standard
The ASTM B927 standard establishes strict technical requirements for the production and quality of metal products made from a wide range of brass alloys, including grades C21000, C22000, C23000, C24000, C26000, C26800, C27000, C27400, C27450, C27451, C27453, and C28500. The scope of the specification includes bars of various cross-sections (square, hexagonal), rods (round, octagonal), and profile shapes with complex geometry.
The manufacturing process at EV Group China eliminates structural defects, ensuring the uniformity of the wrought alloy. The products undergo mandatory chemical composition control, including regulated content of copper, lead, iron, and zinc impurities. The production method (hot or cold working) is selected based on the requirements for the final mechanical properties of the product.
To ensure the necessary physical and mechanical characteristics, EV Group China supplies rolled products in the following heat treatment and temper conditions:
- Condition O60: after controlled soft annealing to increase ductility.
- Condition H01, H02, H04: after strain hardening (1/4 hard, 1/2 hard, Hard) to achieve the required tensile and yield strength.
The ASTM B927 standard strictly regulates geometric dimension tolerances, as well as the minimum permissible values for elongation and tensile strength characteristics of the material, which guarantees the stability of products in critical assemblies and structures.