The most commonly used metal material for mechanical design

6061, 7075 Auminum alloy: 7075 belongs to super hard aluminum, and the hardness is higher than 6061. But the price of 7075 is higher than 6061. Both can be processed, black anode oxidation, sandblastic oxidation, hard oxidation, nickel plating, etc. If you want the appearance of the aluminum parts with steel parts, nickel can be plated. Some aluminum parts that are directly contacting with the product, such as the need for sticky, high and low temperature, and insulating properties, can be considered.

Q235-A: Low-carbon steel with carbon content <0.2%, the yield strength is about 235MPa, and its plasticity is better, with a certain strength but impact. It is generally used to do welding structures, such as Fangtong, welding block, rack plate, corner steel, etc. of welding racks. During the surface treatment, the structural parts are generally sprayed or baked. The plate class is anti -rust and is usually chrome or black. (The steel type suitable for hair treatment is only carbon steel and low alloy steel. The principle is to be plated with a dense iron oxide film on the surface of the steel parts.)

45 Steel: Middle -carbon steel with a carbon content of 0.42 ~ 0.50%. Its mechanical performance and cutting performance are excellent, and the welding performance is poor. The GB/T699-1999 standard stipulates that the 45-steel tensile strength is 600MPa, the yield strength is 355MPa, the elongation rate is 16%, and the section contraction rate is 40%. It is generally used as a rack plate, structural connector, axis with low strength requirements, etc. 45 Steel regulation (quenching +recovery) The hardness is between HRC20 ~ HRC30. The hardness of quenching is generally required that HRC45 is required.

40Cr: It belongs to alloy structure steel, with sticks and plates. Its tensile strength can reach 980MPa (heat treatment). After the collateral treatment, it has good mechanical properties, and the hardness after quality is usually excellent comprehensive performance when HRC30 is above HRC30. However, the welding properties are not good and are prone to cracks. Can be used to make gears, connectors, shafts, etc. After quenching, the surface hardness can reach HRC55. 42CRMO can be regarded as a enhanced version of 40CR.

Stainless steel 304, 316: The most widely used stainless steel, including stick materials, plates, pipes, profiles, etc. It has good corrosion resistance, mechanical properties, stamping and bending heat processability, and standard 304 unknown. However, many products cause magneticism due to the analysis of component bias or thermal treatment during smelting. 316 stronger corrosion resistance, especially under high temperature and harsh environment. In addition, the 2CR13 and other Matinity stainless steel also uses very widely.

Mold steel CR12: It is the national standard name, corresponding to the JIS name SKD1. Because of its excellent comprehensive performance and low price, it is currently widely used cold mold steel. It has high strength, good abrasion resistance, but poor shock toughness and easy crispy. It is mainly used to bear the small impact load, high -wear -resistant punching, punching molds, etc.

65mn: Poor and high -wear resistance, which are used in elastic components such as various springs, decks, and clutch reeds.

Cast iron: It is mainly composed of metal elements such as iron, carbon, silicon, and is a carbon alloy with a carbon content of <2%. The carbon content for industrial cast iron is generally 2.5% to 4%. Because its liquidity is many used for the complex casting complicated casting Parts with internal structures. The mechanics performance of ball and ink cast iron is the best, and the gray cast iron is poor. However, due to the low price of gray cast iron and good abrasion resistance, and good shock absorption, it is the most widely used cast iron, and the ball cast iron is second. The ash cast iron (HT150) has many applications. It is commonly used in gear box, machine tool beds, box, hydraulic cylinder, pump, valve body, bearing cover, etc. The non -standard is used for complex parts or cure.

Brass is a alloy consisting of copper and zinc. It has strong wear resistance and has strong wear resistance. Among them, H65 brass is composed of 65%of copper and 35%zinc. Because of its good mechanics, craftsmanship, hot and cold processing performance, and golden appearance, there are many non -standard industries. A high occasion.

Copper: Copper is copper, and its stiffness is weaker than brass, but the conductivity is better. Used in the occasion of high heat conductivity requirements. For example, the welding head part of the laser welding part.

Bronze: Tin or lead is added to the copper. The bronze is cast well, abrasion -resistant, and stable chemical properties. It is suitable for casting various utensils, mechanical parts, bearing, gear, etc. Bronze is also harder than pure iron. Tin bronze is often used to make oil -free bands. Gauli brass is often inlaid with solid lubricants as oil -free bans. , But there is no tin bronze wear resistance.