Name: H70 Brass 
 Material Name: Brass 
 Grade: H70 
 Standard: JIS H3250-2006 (JIS) GB / T 13708-1992 (GB) 
 Certification system: ISO7001-2000 quality certification, SGS environmental protection certification standards. 
 ------ ☆ ☆ ☆ H70 brass suppliers, H70 Brass agents, H70 Brass dealer ☆ ☆ ☆ ------ 
 Copper Co., Ltd. Shenzhen Xing Jiang, China is now set professional, advanced, high-quality brass plate in one of the manufacturer of H70, H70 brass suppliers, H70 brass agents, 

 H70 brass distributors, H70 brass dealers, one of the professional production, supply, agency, distribution, distribution of national standard brass with Jiangxi Copper, Luoyang Copper, Yunnan Copper, imported 

 Japanese Mitsubishi, Japan Sambo, Japanese cherry, Germany, Sa Site, the United States Coke fun. The H70 brass is our main production, sales, agency, distribution, distribution of products. 

 Our supply of brass H70 (JIS brass C2670) copper purity ≥ 70%. Has good thermal conductivity, workability, ductility, corrosion resistance and weather resistance. Can be applied to India 

 Brush bus, circuit boards, covered with copper, terminals, electrical, distillation, construction and chemical industries. Yet still quality products, complete specifications, everything you buy peace of mind, at ease. Copper density 8.89, melting point 1083oC, its main drawback is the lower strength and hardness, can not be used as structural components. It is mainly used in industrial manufacturing industrial electrical wire and conductive components, as well as in the preparation of various alloys. Has good thermal conductivity, workability, ductility, corrosion resistance and weather resistance. Bus can be applied to printed circuit boards, covered with copper, terminals, electrical, distillation, construction and chemical industries. Yet still quality products, complete specifications, everything you buy peace of mind, at ease. 
 Here is what I produced an overview of H70 brass, features and application, chemical composition, mechanical properties, heat treatment specification is as follows: 

 General overview of H70 brass plate: 
 If it is made up of two or more elements of a variety of special alloy called brass. If the lead, tin, manganese, nickel, iron, silicon alloy composed of copper. Brass has a strong wear resistance. Special 

 Special brass called special brass, its high strength, hardness, resistance to chemical corrosion. There machining of mechanical properties are more prominent. The pull from the brass into a seamless copper tube, soft, 

 Strong wear resistance. Brass seamless pipe can be used for heat exchangers and condensers, low-temperature piping, sea transport tube. Manufacture of sheet, strip, rods, tubing, casting parts and so on. Copper in 

 62% to 70%, strong plastic, manufacturing pressure equipment. According to brass alloy elements contained in different types, divided into ordinary brass and special brass brass two. Pressure processing 

 Brass Brass is called deformation. Add brass to zinc as the main elements of copper alloy, with a beautiful yellow, collectively brass. Binary alloy of copper and zinc, said simply called ordinary brass or yellow 

 Of copper. Three yuan more than the brass called special brass or brass called complex. Less than 36% zinc brass alloy from the solid solution composition, with good cold working properties, such as 30% zinc brass often 

 Used to make shells, commonly known as brass or seventy-three brass cartridge case. 36 to 42% zinc in the brass alloy by and between the solid solution composition, the most commonly used is 40% zinc Tiananmen brass. As 

 To improve the performance of ordinary brass, and often add other elements, such as aluminum, nickel tin ﹑ ﹑ silicon manganese ﹑ ﹑ lead. Can improve the strength of aluminum brass ﹑ hardness and corrosion resistance, but the plastic lower, proper 

 Cooperation seagoing vessel condenser and other corrosion-resistant parts. Brass tin can improve the strength and corrosion resistance of the seawater, it said the Navy brass, and for ship propellers and other thermal equipment. Lead to improved 
 Brass cutting; this cutting brass is commonly used as watch parts. Brass castings used to make valves and pipe fittings. 

 General characteristics and scope of brass: 
 ① there is a very good plastic (which is the best in brass) and high strength, good cutting performance, easy to weld, the general corrosion is very stable, but easy to produce corrosion cracking. For general 

 Brass in a variety of the most widely used. 
 ② high intensity ratio of copper (brass, but in general, it is the lowest), electrical conductivity, thermal conductivity, and fresh water in the atmosphere have a higher corrosion resistance and good plasticity, easy-to-cold, hot 

 Processing power, easy to weld, forge and tin, no stress corrosion cracking tendencies. 

 General chemical composition of brass: 
 Chinese brands: H70 
 Copper Cu: 64.0 ~ 70.0 
 Zinc Zn: margin of lead Pb: ≤ 0.05 
 Boron P: ≤ 0.01 
 Iron Fe: ≤ 0.05 
 Beryllium Sb: ≤ 0.005 
 Bi Bi: ≤ 0.002 

 General mechanical properties of brass: 
 Tensile strength σb (MPa): ≥ 440 
 Elongation δ10 (%): ≥ 25 
 Elongation δ5 (%): ≥ 30 
 Brass H70 longitudinal elasticity kgf/mm2: 10500 
 Note: The vertical bar tensile properties at room temperature 

 Generally yellow copper heat treatment specifications: 
 Thermal processing temperature of 775 ~ 850 ℃; annealing temperature of 540 ~ 600 ℃. 


 Brass grades and standards of national standards table 
 China Germany Europe United States and Japan to international standards 
 GB DIN EN ISO UNS JIS 
 H70 CuZn5 2.0220 CuZn5 CE500L CuZn5 C21000 C2100 
 H70 CuZn10 2.0230 CuZn10 CW501L CuZn10 C22000 C2200 
 H85 CuZn15 2.0240 CuZn15 CW502L CuZn15 C23000 C2300 
 H70 CuZn20 2.0250 CuZn20 CW503L CuZn20 C24000 C2400 
 H70 CuZn30 2.0270 CuZn30 CW505L CuZn30 C26000 C2600 
 H70 CuZn33 2.0270 CuZn33 CW506L CuZn35 H700 C2620 
 H70 CuZn36 2.0335 CuZn36 CW507L CuZn35 C27000 H70 
 H63 CuZn37 2.0321 CuZn37 CW508L CuZn37 C27200 C2720 


 Jiang Xing Copper Material Co., Ltd. Shenzhen, the H70 copper production volume of copper 

 products in line with national standards, copper surface is smooth, flat, stable material, bright color, rolling 

 dense, neat packaging, price, products are sold all over the country. Please feel free to purchase! 

 Professional skills, cutting-edge R & D, first-class production, the price of equality, feelings of service! 

 Best Regards! 

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