Browse Standards J473_201808
Current STABILIZED 2018-08-24

Solders(STABILIZED Aug 2018) J473_201808

The choice of the type and grade of solder for any specific purpose will depend on the materials to be joined and the method of applying. Those with higher amounts of tin usually wet and bond more readily and have a narrower semi-molten range than lower amounts of tin.
For strictly economic reasons, it is recommended that the grade of solder metal be selected that contains least amount of tin required to give suitable flowing and adhesive qualities for application.
All the lead-tin solders, with or without antimony, are usually suitable for joining steel and copper base alloys. For galvanized steel or zinc, only Class A solders should be used. Class B solders, containing antimony usually as a substitute for some of the tin or to increase strength and hardness of the filler metal, form intermetallic antimony-zinc compounds, causing the joint to become embrittled. Lead-tin solders are not recommended for joining aluminum, magnesium, or stainless steel.
Permissible impurity levels are shown:
In dipping solders, 0.5% max copper is permissible because of pickup in bath.
Compositions, temperatures, and similar specifications of these SAE solders are shown in Table 1.
J473_201808
2018-08-24
Latest
Stabilized
J473_196206
1962-06-01
Historical
Revised
J473A_196206
1962-06-01
Historical
Revised

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