T2 H62 HBP59 1 What is the difference between copper

The conductivity of T2 (copper) is better than that of H62 (brass), but it is difficult to process, easy to stick to the knife, and T2 is more expensive; HBP59-1 is not well understood, the cheapest seems to be, with high strength and hardness and poor plasticity, and other properties are closer to H62;

HPB59-1 belongs to the national standard lead brass, the executive standard: GB T 5231-2012HPB59-1 is lead brass, it is characterized by good machinability, good mechanical properties, and can withstand cold. Hot pressure processing, easy welding, good brazing, good stability to general corrosion, but there is a tendency to corrode and crack, mainly used for air conditioning valves, hardware machinery, etc.

The chemical composition of HPB59-1 is shown in the following figure:

The HPB59-1 brand initial letter "H" indicates brass, the last two digits indicate the average content of brass, and the last symbol and number indicate the element and its content. For example, HPB59-1 indicates that the copper ("H") content is about 59% and the lead ("Pb") content is about 1%.

HPB59-1 Mechanical Properties:

Tensile strength: (b mpa) 420

Elongation: (δ10%)10

Elongation: (δ5%)12

Note: Longitudinal tensile mechanical properties of the bar at room temperature.

Sample size: 5-20 in diameter or relative distance between sides.

HPB59-1 Heat Treatment Specification: Thermal Processing Temperature 640 780; annealing temperature 600 650 ; Low temperature annealing temperature 285 for internal stress relief.

H62 copper represents ordinary brass with an average copper content of 62%, of which, H is the first letter of the pinyin letter of the Chinese character "yellow", and 62 is the average content of copper elements; Copper alloys with other elements added to ordinary brass are called special brass and are still used"h"Zhao said that it will be followed by the chemical symbols and average compositions of other added elements, such as H62 for copper content, and the balance for zinc content; HAL59-3-2 indicates that it contains 57% 60% copper, 2% 3% nickel, and the rest is zinc.

Brass is divided into three types: ordinary brass, special brass and cast brass, and the cast brass starts with ZCU followed by the symbol of other elements and its average collision base.

H62A belongs to the national standard brass, and the implementation standard: GB T 5231-2012

H62A brass has good mechanical properties, good plasticity in the hot state, plasticity in the cold state, good machinability, easy brazing and welding, corrosion resistance, but easy to corrode and crack. In addition, it is cheap and is a common brass variety that is widely used. Also known as tetrahexabras.

It can be used for all kinds of deep drawing and bending manufacturing of stressed parts, such as pins, rivets, washers, nuts, conduits, gas gauge springs, screens, radiator parts, etc.

The chemical composition of H62A brass is shown below