Physical and mechanical properties. Scope of solid solder.

Are you interested in the use of solder? Supplier Avlob offers to buy solid solders at a bargain price. The supplier guarantees the timely delivery of products to any address in Europe or abroad. Regular customers receive a discount discount. The price is the best in this segment.

Stamps based on zinc and copper

Hard grades of solders are melted at a temperature of 200… 250 ° С. They are divided into two groups — the first group contains zinc and copper, the second group contains silver. The operating properties are determined by the percentage content of these metals. With an increase in the proportion of copper in the solder, its melting point increases. Accordingly, with increasing percentage of zinc in the alloy, its melting temperature decreases. As additives, iron and lead are included, their quantity does not exceed 1.5%. Lead increases the fusibility of the solder, and changes its color: the alloy becomes lighter.

Marking

The most common are such alloys as PMC-36, PMC-48 and PMC-54 (P-solder, M-copper, Z-zinc, the figure after the combination of letters is the percentage of copper in the solder).

Production

The production of copper-zinc solders is regulated by GOST 1534−42. Delivery status — grain size from 0.2 to 5 mm. Class, A contains grains with transverse dimensions up to 3 mm, and class B — in sizes of 3… 5 mm.
Copper-zinc solders are not used for soldering parts that, during their operation, experience increased internal pressures. Due to the fact that after the solidification of the solder evaporates zinc. This worsens the quality of the soldered joint, so in such situations only copper solders are used. Supplier Avlob offers to buy any solder at a bargain price. The price is the best in this segment of rental.

Stamps based on silver

Silver brands of solders are distinguished by the presence of silver in place of lead. This negatively affects the cost of alloys, but it ensures satisfactory functioning of the joints brazed by such an alloy at much higher temperatures. The melting temperature of the alloy increases with increasing percentage of silver in the alloy. The connection is durable, and not corroded, has a light color.

Production

The production of silver solders from PSr2 to PSr72 is regulated by GOST 8190−56. The letters Cp in the name indicate the presence of silver, and the figure at the end of the designation indicates the percentage of silver in the alloy. The chemical composition can also include cadmium (K) and phosphorus (F). Such solders melt at temperatures of 270… 850 ° C, the state of supply — strips, bars and wire.

Delivery, price

Are you interested in the use of solder? Buy solder at an affordable price from the supplier Avlob today. The price is formed on the basis of European production standards. Supplier Avlob offers to buy hard solder at the optimal price in bulk or at retail. We invite you to partner cooperation