Which is harder, brass or copper?
1, the metal material is generally characterized by the hardness of pure metal is lower than its alloy, its alloy hardness is high, and the melting point is low. Oxygen-free copper and copper are pure copper, but the purity is different, the purity of oxygen-free copper is higher, the purity of copper can reach 99.9%~99.99%(different grades have some differences) copper contains very few impurities, so oxygen-free copper is the highest purity, and the softest, copper is slightly harder (close to oxygen-free copper), brass is the hardest.
2, copper has another feature, the hardness will become soft after heat treatment, and will become hard after cold processing (cold hardening) because the hardness of non-ferrous metals and alloys and composition, grade, impurities have a greater impact, and with the state, lattice structure, has a great relationship, so there is generally little specific hardness data, can only be described qualitatively.
3, What is the hardness of copper? Copper, density (7.83g/ cm3} melting point is 1083 degrees, copper content reached 99.9%, it is non-magnetic. With good electrical and thermal conductivity and corrosion resistance, copper is named for its purplish red color. The electrical and thermal conductivity of copper is second only to silver, and it is widely used in the production of conductive and thermal equipment. Copper in the atmosphere, seawater and some non-oxidizing acids, bases, salt solutions and a variety of organic acids, has good corrosion resistance, used in the chemical industry.
4, the density of brass (8.93g/ cm3) multi-purpose with mechanical bearing lining, wear-resistant, brass "density greater than copper" with zinc as the main alloying element of copper-based alloy, copper about 60%; Zinc about 40%; Individual grades contain about 1% lead, which is impurity. Because it is often yellow, the brass is beautiful in color, has good technology and mechanical properties, has a certain corrosion resistance, and the electrical conductivity is relatively low.
Brass and copper which hardness is high, I believe that we all understand through the above introduction, in the manufacture of wire and cable, of course, copper is more desirable, its conductive resistance is the smallest, more suitable for conductors, hardness is less than brass, making wire and cable softer, easier to operate in the use of the process, while less impurities, but also increase the conductivity of copper.