Physical and mechanical properties. The scope of soft solder
Are you interested in the properties of soft solders from the supplier — Electrovek-Steel? With us you can get acquainted with the most reliable information on this
Buy soft solders that meet the technical standards and requirements of GOST 21931−76, offers to purchase the company Electrovek-steel. Products are sold at economically advantageous prices of producers. The supplier guarantees the timely delivery of solders to the address specified by the consumer.
Purpose of soft solders and technology of their production
The considered alloys should have good fluidity during melting, and also wet the surfaces of the metals to be joined together. Despite the low melting point (up to 120… 150 0 С), special requirements are imposed on soft solders, which relate to mechanical strength and resistance to adverse environmental effects (primarily, corrosion is meant). In addition, after soldering, there should be no shrinkage stresses at the junction, and the coefficient of thermal expansion of the finished structure should be minimal.
Soft solders of most brands are produced mainly on an industrial scale, but in some cases they can be prepared either individually or individually. The production of solders, the melting point of which does not exceed 100… 110 ° C, can be carried out in ordinary crucibles from porcelain, for the production of more refractory alloys, steel crucibles are used.
The technology of production of solders includes the following stages:
Cleaning and grinding of all components using ball mills;
Mixing in special batchers;
Melt in induction furnaces in a non-oxidizing atmosphere, or in vacuum furnaces (to eliminate slagging);
Casting of the finished alloy into molds;
If necessary — rolling solder to the state of wire or bars trapezoidal cross section.
Company Electrovek-steel offers to buy at affordable prices from the manufacturer soft solders of any brand and profile. The supplier ensures the timely delivery of products to any point set by the consumer.
Consumer properties of the most common brands of soft solders
Are given in the table:
|Solder||Percent composition||Melting point, ° C||Durability at break, kgf / mm2||
|POS-60||5.6||59… 61||-||rest||-||Antimony 0… 0.8||182… 185||-||-||-|
|POS-50||6th||49… 50||-||rest||-||Antimony 0… 0.8||183… 209||-||-||-|
|POS-90||7th||88… 90||-||rest||-||Copper 0… 0.8 nickel 0… 0.8||183… 222||-||-||-|
|POS-40||6.8||39… 40||-||rest||-||Antimony 1.5… 2||183… 235||-||-||-|
|POS-30||9||29… 30||-||rest||-||Antimony 1.5… 2||183… 256||-||-||-|
|POS-18||10||7… 18||-||rest||-||Antimony 2… 2,5||183… 277||-||-||-|
|PSp-1.5||13||15||-||83.5||-||Silver 1,5||265… 270||-||-||-|
|PSr-2.5||13||5.5||-||92||-||Silver 2.5||235… 305||-||-||-|
|PC60 C-40||17th||-||-||-||60||Zinc 40||310||-||-||-|
|B||16||-||-||-||-||Aluminum 12 copper 8 zinc 80||400||-||-||-|
Explanation of notes:
1 For soldering metals with a melting point of 200 ° C and higher
3 Soldering fusible signal fuses
5 For soldering mounting wires with PVC insulation, winding wires, sealed joints, hardened steel products
6 For soldering current-carrying parts from brass, silver, tinned nickel
7 For soldering parts and assemblies for electroplating, silver, gilded (solder with high corrosion resistance)
8 For tinning and soldering cable products
9 For tinning and soldering current-carrying parts of copper, zinc and their alloys, for soldering parts of instruments and radio equipment, for tinning before soldering with more readily melted solders
10 Cheap solder for various jobs
13 For soldering molybdenum and tungsten
16 For soldering magnesium and its alloys
17 For soldering parts from galvanized steel, zinc, copper alloys, for soldering external parts of devices.
Buy soft solders in the range at the prices of the manufacturer offers the company Elektrovek-steel. The supplier guarantees prompt delivery of products to the point specified by the customer.