1. What is a brass row?

(1) Meaning

Brass row has high strength, good plasticity, suitable for cold and hot processing, good weldability and corrosion resistance. It is used for condensation and heat dissipation tubes, serpentine tubes, siphons, cooling equipment parts, and has good mechanical properties. Good plasticity, good machinability, weldability, good corrosion resistance, various deep extension and bending force-bearing parts, such as pins, nuts, barometer springs, heat dissipation, ring parts. Lead brass plate is a widely used lead brass. It has good mechanical properties and good machinability. It can withstand hot and cold pressure processing. It is used in various structural parts for cutting and stamping processing, such as gaskets, Bushings etc. Tin brass plate has high corrosion resistance, good mechanical properties, and good pressure processability under cold and hot conditions. It can be used for corrosion-resistant parts on ships and parts and conduits in contact with steam, oil and other media. Brass rows have good mechanical properties, electrical conductivity, low thermal conductivity, good corrosion resistance, and a tendency to corrode and crack. They are important corrosion-resistant parts and parts for weak current electrical industries.

H90 high-precision brass row characteristics and scope of application: higher strength than copper (but among ordinary brass, it is the lowest), good electrical and thermal conductivity, and high corrosion resistance in the atmosphere and fresh water , and has good plasticity, easy cold and hot pressure processing, easy welding, forging and tin plating, and has no tendency of stress corrosion cracking. Thermal processing temperature is 850~950 degree ; annealing temperature is 650~720 degree ; low-temperature annealing temperature to eliminate internal stress is 200 degree .

(2) Composition

Brass plate is an alloy composed of copper and zinc. If brass is composed only of copper and zinc, it is called ordinary brass. Brass is often used to make valves, water pipes, connecting pipes for internal and external air conditioners and radiators. "If it is a variety of alloys composed of more than two elements, it is called special brass. For example, a copper alloy composed of lead, tin, manganese, nickel, iron, and silicon. Brass has strong wear resistance. Special brass Brass is also called special brass. It has high strength, high hardness, and strong resistance to chemical corrosion. It also has outstanding mechanical properties in cutting. The seamless copper tube made of brass is soft and wear-resistant. Strong. Brass seamless pipes can be used for heat exchangers and condensers, cryogenic pipelines, submarine transportation pipes, etc., with a copper content of 62% to 68%. Strong, manufacturing pressure-resistant equipment, etc. According to the different types of alloy elements contained in brass, brass is divided into two types: ordinary brass and special brass. Brass used for pressure processing is called deformed brass.

(3) Purpose

It can be used to make various deep-drawn and bent stress-bearing parts, such as pins, rivets, washers, nuts, conduits, air pressure gauges, screens, radiator parts, etc. It has good mechanical properties, good plasticity in hot state, acceptable plasticity in cold state, good machinability, easy welding and welding, and corrosion resistance. It is a common brass variety widely used.

(4) Brass row material

H62, H62, H63, H65, H68, H7{{20}}, H80, H85, H90, H96, T1, T2, C1100, C5111, C5101, C5191, C5210, TU1, TP1, TP2, TAg0.08, TAg0.1, C1100, C1020, C1201, C1220, C1271, C2100, C2200, C2300, C2400, C2600, C2680, C2700, C2720, C2800, C2801, C3604w, etc.

Specifications: thickness: 1.0-200mm, width: 305-600mm.

Hardness: O, 1/2H, 3/4H, H, EH, SH, etc.

(5) Characteristics of brass

1. It has the advantages of high internal and external surface cleanliness, ultra-brightness, uniform and dense structure, high dimensional accuracy, and good formability;

2. The brass row has high strength, good plasticity, is suitable for cold and hot processing, has good weldability and corrosion resistance, has good mechanical properties, has good plasticity in the hot state, good machinability, good weldability and corrosion resistance;

2. What is a copper row?

(1) Meaning

Copper row is also called red copper, which is pure copper. It is named after its color is purple. Various properties are found in copper. Red copper is industrial pure copper, with a melting point of 1083 degree , no allotropic transformation, and a relative density of 8.9. The mass of the same volume is about 15% heavier than ordinary steel. Because it has a rose red color and turns purple after an oxide film is formed on the surface, it is generally called red copper. It is copper containing a certain amount of oxygen, so it is also called oxygen-containing copper.

It is not necessarily pure copper. Sometimes a small amount of deoxidizing elements or other elements are added to improve the material and function, so it is also classified as a copper alloy. China's copper row processing materials can be divided into: ordinary copper rows (T1, T2, T3, T4), oxygen-free copper (TU1, TU2 and high-purity, vacuum oxygen-free copper), deoxidized copper (TUP, TUMn), added Four types of special copper with a small amount of alloying elements (arsenic copper, tellurium copper, silver copper). The electrical conductivity and thermal conductivity of red copper are second only to silver, and it is widely used in making electrical and thermal conductive equipment. Red copper is discharged in the atmosphere, seawater and certain non-oxidizing acids (hydrochloric acid, dilute sulfuric acid), alkali, salt solutions and various organic acids (acetic acid, citric acid). It has good corrosion resistance and is used in the chemical industry. In addition, the copper plate has good weldability and can be made into various semi-finished products and finished products through cold and hot plastic processing. In the 1970s, the output of copper rows exceeded the total output of other types of copper alloys.

(2) Features

(3) Differences from brass rows

"Brass" is harder than "red copper"! Red copper, also called red copper, is pure copper. There are differences in color and quality between red copper and brass! In fact, the color is obvious at a glance, as the name suggests! In terms of quality, red copper is better It is harder than brass and has about the same weight. Pure copper is also called red copper. Its density is 7.83g/cm3 and its melting point is 1083 degrees. It is non-magnetic, has good electrical and thermal conductivity, corrosion resistance and toughness. The density of brass is ( (8.93g/cm3) is mostly used as a mechanical bearing lining, and the wear-resistant "brass" has a density greater than that of red copper.

Brass row, a copper-based alloy with zinc as the main alloy element, is named after its often yellow color. Brass has beautiful radiance, good process and mechanical properties, high electrical and thermal conductivity, corrosion resistance in the atmosphere, fresh water and sea water, easy cutting and polishing, good weldability and low price. It is often used to make conductive and thermal components, corrosion-resistant structural parts, elastic components, daily hardware and decorative materials, etc. It has a wide range of uses.

Generally speaking, the cutting performance of brass rows is better than that of copper rows (copper rows are easy to stick to the knife); in terms of non-cutting processing, the deformation resistance of red copper rows is smaller and easier to form. Copper row is pure copper. The color of pure copper is orange or rose red, but it will be oxidized into purple when exposed to air, so it is called copper row. The brass row is Cu-Zn alloy, containing about 80% copper. The hardness is greater than that of copper, but its electrical and thermal conductivity is poor.