--- title: Blog | Brazing & Soldering Manufacturer | Lucas-Milhaupt | Brazing Fundamentals (2) description: Brazing Fundamentals | Lucas-Milhaupt has offered brazing and soldering excellence for over 65 years. We are a global provider and producer of metal joining products and services for thousands of companies worldwide. Our blog provides you with valuable brazing solutions, tips, and information that can be applied to your own applications and projects. (2) --- [![Lucas\_Milhaupt\_logo\_digital](https://blog.lucasmilhaupt.com/hubfs/Lucas_Milhaupt_logo_digital.jpg)](https://www.lucasmilhaupt.com/) - [Products](https://www.lucasmilhaupt.com/Products) - [Filler Metals](https://www.lucasmilhaupt.com/Products/Filler-Metals) - [Fluxes](https://www.lucasmilhaupt.com/Products/Fluxes) - [Pastes](https://www.lucasmilhaupt.com/Products/Pastes) - [Distribution](https://www.lucasmilhaupt.com/Products/Distribution) - [Industries](https://www.lucasmilhaupt.com/Industries) - [Aerospace](https://www.lucasmilhaupt.com/Industries/Aerospace) - [Automotive](https://www.lucasmilhaupt.com/Industries/Automotive) - [Electrical](https://www.lucasmilhaupt.com/Industries/Electrical) - [HVAC/R](https://www.lucasmilhaupt.com/Industries/HVACR) - [Medical](https://www.lucasmilhaupt.com/Industries/Medical) - [Microelectronics](https://www.lucasmilhaupt.com/Industries/Microelectronics) - [Oil and Gas](https://www.lucasmilhaupt.com/Industries/Oil-and-Gas) - [Services](https://www.lucasmilhaupt.com/Services) - [Capabilities](https://www.lucasmilhaupt.com/Services/Capabilities) - [Consulting Services](https://www.lucasmilhaupt.com/Services/Consulting-Services) - [Brazing Audits](https://www.lucasmilhaupt.com/Services/Brazing-Audit) - [Tech Support Request Form](https://www.lucasmilhaupt.com/Services/Tech-Support-Request-Form) - [Resources](https://www.lucasmilhaupt.com/Resources) - [FAQ](https://www.lucasmilhaupt.com/Resources-Library/FAQ) - [Literature](https://www.lucasmilhaupt.com/Resources-Library/Literature) - [Demo Videos](https://www.lucasmilhaupt.com/Resources-Library/Demo-Videos) - [Technical and Safety Data Sheets](https://www.lucasmilhaupt.com/Resources-Library/Technical-and-Safety-Data-Sheets) - [Brazing Academy](https://www.lucasmilhaupt.com/Brazing-Academy) - [Brazing Fundamentals](https://www.lucasmilhaupt.com/Brazing-Academy/Brazing-Fundamentals) - [Braze School and Training](https://www.lucasmilhaupt.com/Brazing-Academy/Braze-School-and-Training) - [How to Braze Aluminum](https://www.lucasmilhaupt.com/Brazing-Academy/How-to-Braze-Aluminum) - [Principles of Joint Design](https://www.lucasmilhaupt.com/Brazing-Academy/Principles-of-Joint-Design) - [Why Brazing?](https://www.lucasmilhaupt.com/Brazing-Academy/Why-Brazing) - [Metal Joining: Brazing vs. Soldering](https://www.lucasmilhaupt.com/Brazing-Academy/Metal-Joining-Brazing-vs.-Soldering) - [Metal Joining: Brazing vs. Welding](https://www.lucasmilhaupt.com/Brazing-Academy/Metal-Joining-Brazing-vs.-Welding) - [About](https://www.lucasmilhaupt.com/About) - [Center of Excellence](https://www.lucasmilhaupt.com/About/Center-of-Exellence) - [Certification](https://www.lucasmilhaupt.com/About/Certification) - [Find Locations](https://www.lucasmilhaupt.com/About/Find-Locations) - [Find a Distributor](https://www.lucasmilhaupt.com/About/Find-a-Distributor) - [News & Events](https://www.lucasmilhaupt.com/About/NewsEvents) - [History](https://www.lucasmilhaupt.com/About/History) - [SIL-FOS](https://www.lucasmilhaupt.com/About/SIL-FOS) - [Social Responsibility](https://www.lucasmilhaupt.com/About/Social-Responsibility) - [Careers](https://www.lucasmilhaupt.com/About/Careers) - [Culture](https://www.lucasmilhaupt.com/About/Culture) - [Contact](https://www.lucasmilhaupt.com/About/Contact) # Blog ## [Brazing Surface Preparation: How to Clean Base Materials](https://blog.lucasmilhaupt.com/en-us/about/blog/brazing-surface-preparation) ***Posted by Lucas-Milhaupt Brazing Experts on Jun 1, 2017*** Having clean base materials is one of the Six Fundamentals of Brazing that ensure quality braze joints: 1. Good fit and proper clearance 2. Clean base materials 3. Proper flux/atmosphere 4. Proper fixturing 5. Proper heating 6. Final cleaning Why Clean Base Materials? Make sure your base materials ... [Read More](https://blog.lucasmilhaupt.com/en-us/about/blog/brazing-surface-preparation) Topics: [Brazing Fundamentals](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals) ## [Flux Removal: Post-Braze Cleaning](https://blog.lucasmilhaupt.com/en-us/about/blog/flux-removal-post-braze) ***Posted by Lucas-Milhaupt Brazing Experts on May 16, 2016*** Depending on your brazing process, you may need to perform post-braze joint cleaning to remove residual flux. This step can be crucial since most fluxes are corrosive. Post-braze cleaning is one of the Six Fundamentals of Brazing\*. Reasons to Remove Flux Let's examine five reasons why post-braze ... [Read More](https://blog.lucasmilhaupt.com/en-us/about/blog/flux-removal-post-braze) Topics: [Flux](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/flux), [Brazing Fundamentals](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals) ## [Liquidus vs. Solidus](https://blog.lucasmilhaupt.com/en-us/about/blog/liquidus-and-solidus) ***Posted by Lucas-Milhaupt Brazing Experts on Mar 26, 2014*** Liquidus vs. Solidus Simply put, liquidus is the lowest temperature at which an alloy is completely liquid; solidus is the highest temperature at which an alloy is completely solid. Pure metals are fluid, and they melt at a single temperature. For example, silver melts at 1761°F (961°C), and copper ... [Read More](https://blog.lucasmilhaupt.com/en-us/about/blog/liquidus-and-solidus) Topics: [Brazing Fundamentals](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals) ## [Washer Calculation](https://blog.lucasmilhaupt.com/en-us/about/blog/free-washer-calculation) ***Posted by Lucas-Milhaupt Brazing Experts on Dec 16, 2013*** Ring vs. Washer Both rings and washers are preform shapes used for brazing. For smaller parts with relatively small joint volume and lap area, either a washer or ring may be used (Figure 1). Both washers and rings can be circular in shape; however, their cross sections will always differ in shape. ... [Read More](https://blog.lucasmilhaupt.com/en-us/about/blog/free-washer-calculation) Topics: [HVAC/R](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/hvac-r), [Brazing Fundamentals](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals) ## [Tips for Designing Braze Joints](https://blog.lucasmilhaupt.com/en-us/about/blog/designing-braze-joints) ***Posted by Lucas-Milhaupt Brazing Experts on Nov 6, 2013*** Ten Tips for Designing Braze Joints Are you looking for high strength, corrosion resistance, electrical conductivity, ductility, hermeticity, good color match, or low-temperature metal joining? These requirements should be considered carefully, because different joint designs and filler metals will ... [Read More](https://blog.lucasmilhaupt.com/en-us/about/blog/designing-braze-joints) Topics: [Brazing Fundamentals](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals) ## [Oxy-acetylene Torch Safety](https://blog.lucasmilhaupt.com/en-us/about/blog/oxy-acetylene-torch-safety) ***Posted by Lucas-Milhaupt Brazing Experts on May 30, 2013*** When it comes to safely brazing with oxy-acetylene torches, let's look at two important aspects: safety equipment, plus procedures for safe operation. This is serious business: arc rays and sparks can result in loss of sight, fume inhalation can lead to lung damage, and other accidents can cause ... [Read More](https://blog.lucasmilhaupt.com/en-us/about/blog/oxy-acetylene-torch-safety) Topics: [Torch](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/torch), [Brazing Fundamentals](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals), [Brazing Tips](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-tips) ## [Stop-Off Blog](https://blog.lucasmilhaupt.com/en-us/about/blog/control-braze-alloy-with-stop-off) ***Posted by Lucas-Milhaupt Brazing Experts on Mar 19, 2013*** How Stop-Off Works To understanding how Stop-Off works, let's review the brazing process. At Lucas Milhaupt, we preach six fundamentals of brazing: 1. Good fit & clearance 2. Clean metals 3. Uniform fluxing 4. Proper assembly 5. Brazing technique 6. Post-braze cleaning Let's focus on Step 2 - ... [Read More](https://blog.lucasmilhaupt.com/en-us/about/blog/control-braze-alloy-with-stop-off) Topics: [Flux](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/flux), [Brazing Fundamentals](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals) ## [Interfacial Corrosion](https://blog.lucasmilhaupt.com/en-us/about/blog/avoid-interfacial-corrosion) ***Posted by Lucas-Milhaupt Brazing Experts on Mar 7, 2013*** Interfacial Corrosion The situation: When brazing stainless steel with flux, subject to a damp environment, you notice rust-like spots around the periphery of the braze metal. Rapid corrosion may begin within two days or even as soon as two hours. The brazing filler metal may eventually peel away ... [Read More](https://blog.lucasmilhaupt.com/en-us/about/blog/avoid-interfacial-corrosion) Topics: [Brazing Fundamentals](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals) ## [Designing Braze Joints at Temperature](https://blog.lucasmilhaupt.com/en-us/about/blog/designing-braze-joints-at-temperature) ***Posted by Lucas-Milhaupt Brazing Experts on Oct 8, 2012*** Braze Joint Design Lucas-Milhaupt serves a wide variety of manufacturers brazing metals. On a daily basis, we see examples of proper braze joint design that yield high-quality, strong joints and good parts. We also observe how improper design can produce weak joints, voids, and ultimately, scrap. ... [Read More](https://blog.lucasmilhaupt.com/en-us/about/blog/designing-braze-joints-at-temperature) Topics: [Brazing Fundamentals](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals) ## [Capillary Action in Brazing](https://blog.lucasmilhaupt.com/en-us/about/blog/capillary-action-in-brazing) ***Posted by Lucas-Milhaupt Brazing Experts on Sep 28, 2012*** Capillarity Capillarity is defined as movement of a liquid along the surface of a solid caused by the attraction of molecules in the liquid to the molecules of the solid. Experiment Let's head to the lab, where we will conduct several experiment depicting successful capillary action, then ... [Read More](https://blog.lucasmilhaupt.com/en-us/about/blog/capillary-action-in-brazing) Topics: [Brazing Fundamentals](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals), [Brazing Tips](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-tips) [Previous](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals/page/1) [All posts](https://blog.lucasmilhaupt.com/en-us/about/blog/all) [Next](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals/page/3) ### Subscribe to Our Blog to Stay Current on All Things Brazing! ### Recent Posts ### Posts by Tag - [Brazing Fundamentals (24)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-fundamentals) - [HVAC/R (18)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/hvac-r) - [Brazing Tips (13)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/brazing-tips) - [Copper (12)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/copper) - [Flux (12)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/flux) - [Torch (10)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/torch) - [Aluminum (8)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/aluminum) - [Automotive (6)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/automotive) - [Electrical (6)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/electrical) - [Furnace (5)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/furnace) - [High Purity Vacuum Tube Grade (5)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/high-purity-vacuum-tube-grade) - [Aerospace (4)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/aerospace) - [Electronics (4)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/electronics) - [Oil & Gas (4)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/oil-gas) - [Solder (3)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/solder) - [High Silver (2)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/high-silver) - [Low Silver (2)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/low-silver) - [Medical (2)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/medical) - [Stainless Steel (2)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/stainless-steel) - [Steel (2)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/steel) - [Carbide (1)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/carbide) - [Nickel (1)](https://blog.lucasmilhaupt.com/en-us/about/blog/tag/nickel) See all [![Lucas Milhaupt Join with the Best Logo RGB](https://blog.lucasmilhaupt.com/hs-fs/hubfs/Lucas%20Milhaupt%20Join%20with%20the%20Best%20Logo%20RGB.png?width=276&height=93&name=Lucas%20Milhaupt%20Join%20with%20the%20Best%20Logo%20RGB.png)](https://www.lucasmilhaupt.com/) 4850 S. 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