1364 F. 1341 F is the maximum stress relief temperature. Above 1341 you get recrystallization to the brittle state. Brittle steel means lost shoulders. Here you can see the middle heat effected zone between the braze on the left and the steel on the right. It is essentially the cloudy area.
Zinc lowers the melting temperature.
When our competition boils the alloy it guarantees that the customer will have to use enough heat to affect the steel. These are the bad tips above that we reworked These tips look good superficially but there are irregularities in the flow. Our competition makes these look good. They also look good when used on automatic brazers. We can make these look good but the quality is not there.