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Tuesday, December 09, 2014
Copper-Phosphorous Alloys for Copper Brazing
Copper-phosphorous brazing alloys are used extensively for joining copper. These alloys are useful in HVAC/R applications involving copper tubing and in industries using electrical conductors. Today, we are exploring the effects of phosphorous when alloyed with copper, and we are also discussing what happens when silver is added to the alloy.
Friday, November 14, 2014
Materials Calculators Blog
When ordering alloys, you may have the dimensions or length of a braze joint, but many products are sold by weight. How much should you order? Or, conversely, you may know the mass/weight, but need the length. Introducing: the new Lucas-Milhaupt materials calculators.
Monday, August 04, 2014
Torch Brazing Stainless Steel
Brazing stainless steels requires adequate planning, as the alloys used to form joints must have properties compatible with the base metal. However, a key advantage is that many dissimilar metals can be joined to stainless steels by brazing. The brazing process can yield strong joints that are ductile, clean and smooth. Tune in for today’s tips on torch brazing stainless steel.
Friday, July 11, 2014
Inspecting Brazed Joints
You have designed your braze joint, selected the appropriate braze materials, factored in fixturing, planned the brazing process and considered cleaning needs. However, have you built into the process how you will inspect the finished brazed joints? Let’s investigate this vital step in ensuring the quality and performance of your finished product.
Thursday, May 15, 2014
Protecting Aluminum-Copper HVAC/R Joints
The HVAC/Refrigeration industry is converting many components from copper to aluminum. These aluminum parts are then typically joined to copper components via brazing. The resulting joints must be protected from galvanic corrosion in the HVAC/R environment. In today’s posting, we will discuss the challenge as well as potential solutions.
Monday, April 14, 2014
Solders for Potable Water
It has been more than 20 years since the passage of the Federal Clean Drinking Water Act in the U.S., which limited the amount of lead (Pb) in solder used for potable water systems. Let’s look at the non-Pb-bearing alloys and the implications for proper joining, plus recommended fluxes for soldering in this application.
Wednesday, March 26, 2014
Liquidus vs. Solidus
When choosing a filler metal for brazing applications, it is important to consider melting behavior—specifically liquidus temperature. Today, we will look at the differentiation of liquidus vs. solidus, considerations for the brazing operation, and examples of appropriate filler metals for specific situations.
Thursday, March 06, 2014
Liquid Metal Embrittlement
Liquid Metal Embrittlement (LME) is a phenomenon where certain ductile metals experience a failure in a brittle mode when exposed to a liquid metal. Do you know the conditions under which LME can occur, and how to avoid it? Let’s explore the topic in today’s posting.
Friday, February 21, 2014
Brazing of Beryllium-Copper Alloys
Beryllium copper, when fully heat treated and cold worked, is the hardest and strongest of copper alloys. Beryllium-copper alloys are available in two classes: high strength and high conductivity. Let’s discuss the applications and procedures for brazing with these alloys.
Monday, February 03, 2014
Customers frequently ask, “What is the shelf life of your formulated products?” Lucas-Milhaupt provides a warranty, rather than a shelf life, for its products. Learn more about the difference between a warrant and a shelf life, and read about warranties on our various brazing products.