{"id":10437,"date":"2026-07-31T17:31:00","date_gmt":"2026-07-31T17:31:00","guid":{"rendered":"https:\/\/www.paulo.com\/?post_type=university-resources&#038;p=10437"},"modified":"2026-08-07T19:11:04","modified_gmt":"2026-08-07T19:11:04","slug":"heat-treating-best-handled-in-house-or-outsourced","status":"publish","type":"resources","link":"https:\/\/www.paulo.com\/es\/resources\/tratamiento-termico-mejor-en-la-empresa-o-en-el-exterior\/","title":{"rendered":"in-house vs. outsourced heat treating"},"content":{"rendered":"<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<p class=\"wp-block-paragraph\">\u00bfEs mejor para sus operaciones el tratamiento t\u00e9rmico interno o el externo? Esta es la \u00fanica pregunta que se hacen todos los fabricantes que necesitan un tratamiento t\u00e9rmico para sus piezas. Y lo cierto es que no existe una soluci\u00f3n \u00fanica.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para los fabricantes de equipos originales y los proveedores que ya disponen de equipos y est\u00e1n superando su capacidad actual, puede haber una necesidad urgente de gestionar el exceso de capacidad. En este caso, la pregunta es: \u00bfdurar\u00e1 la necesidad de aumentar la capacidad? \u00bfCu\u00e1l es la probabilidad de recuperar la inversi\u00f3n?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En cambio, para quienes no disponen de una empresa propia establecida, puede haber demasiados factores desconocidos como para tomar una decisi\u00f3n con conocimiento de causa. Invertir en un horno propio puede parecer la soluci\u00f3n m\u00e1s econ\u00f3mica, pero las empresas inteligentes se preguntar\u00e1n: \u00bfcu\u00e1l es el riesgo?&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En esta gu\u00eda, le ofrecemos una visi\u00f3n sin filtros de los costes del tratamiento t\u00e9rmico para ayudarle a tomar decisiones informadas para su empresa.<\/p>\n<\/div>\n<\/div>\n\n\n\n<style> @media screen and (min-width: 400px) and (max-width: 770px) { .page-header .full-width .row .col-12.col-md-6.col-xl-5.featured-post-image { background-size: contain !important; } } \n\n.post-info-wrap .button.mx-auto {display: none;}\n<\/style>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons button is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button button-link\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/www.paulo.com\/wp-content\/uploads\/2026\/08\/Paulo_In-House-vs-Outsourced-Heat-Treating.pdf\" style=\"background-color:#dd042b\">download this article<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<aside id=\"block_25f45ade4c8f322a3fde2997787f2ba6\"\n  class=\"anchor-nav-sidebar block anchor-nav-sidebar\">\n  <div class=\"anchor-nav-sticky\">\n    <h5 class=\"anchor-nav-title\">On This Page<\/h5>\n    <ul class=\"anchor-nav-list\" aria-label=\"Page sections\">\n                                              <li class=\"anchor-nav-item\">\n              <a class=\"anchor-nav-link\" href=\"#cost-breakdown\">the cost breakdown<\/a>\n            <\/li>\n                                                  <li class=\"anchor-nav-item\">\n              <a class=\"anchor-nav-link\" href=\"#building-reliable-team\">building a reliable team<\/a>\n            <\/li>\n                                                  <li class=\"anchor-nav-item\">\n              <a class=\"anchor-nav-link\" href=\"#minimum-cost-labor\">minimum cost of labor<\/a>\n            <\/li>\n                                                  <li class=\"anchor-nav-item\">\n              <a class=\"anchor-nav-link\" href=\"#support-and-maintenance\">support and maintenance<\/a>\n            <\/li>\n                                                  <li class=\"anchor-nav-item\">\n              <a class=\"anchor-nav-link\" href=\"#operational-costs\">operational costs and equipment<\/a>\n            <\/li>\n                                                  <li class=\"anchor-nav-item\">\n              <a class=\"anchor-nav-link\" href=\"#environmental-fees\">environmental fees<\/a>\n            <\/li>\n                                                  <li class=\"anchor-nav-item\">\n              <a class=\"anchor-nav-link\" href=\"#standards-certs-audits\">standards, certifications, and audits<\/a>\n            <\/li>\n                                                  <li class=\"anchor-nav-item\">\n              <a class=\"anchor-nav-link\" href=\"#outsource-advantage\">the outsource advantage<\/a>\n            <\/li>\n                                                  <li class=\"anchor-nav-item\">\n              <a class=\"anchor-nav-link\" href=\"#smart-partnerships\">smart heat treating partnerships<\/a>\n            <\/li>\n                            <\/ul>\n  <\/div>\n<\/aside>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column content-for-anchor is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<h2 id=\"cost-breakdown-importance\" class=\"wp-block-heading\">the costs of in-house heat treating<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Algunos de los costes del tratamiento t\u00e9rmico interno son obvios: los gastos de capital derivados de la compra de equipos, el alquiler de espacio y la contrataci\u00f3n de personal para dirigir el horno. Sin embargo, hay muchos costes del tratamiento t\u00e9rmico interno que no son tan evidentes. Y para tomar una decisi\u00f3n empresarial inteligente, deben tenerse en cuenta todos estos factores.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Abarcaremos varias \u00e1reas de costes que suelen pasarse por alto, como la mano de obra, los conocimientos t\u00e9cnicos, la asistencia y el mantenimiento, la seguridad, los seguros y la depreciaci\u00f3n, los hornos y equipos auxiliares, las instalaciones, las operaciones y los aspectos medioambientales.<\/p>\n\n\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"building-reliable-team\" class=\"wp-block-heading\">building a reliable team<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">You may have already factored in the cost of hiring a furnace operator, but there are other professionals you will need to ensure the quality and accuracy of the heat treatment of your parts. Here\u2019s what you need to build a well-rounded heat treating team:<\/p>\n\n\n\n<ul class=\"wp-block-list has-custom-css wp-custom-css-60cae2d1\">\n<li>Furnace Operator<\/li>\n\n\n\n<li>Supervision&nbsp;<\/li>\n\n\n\n<li>Metallurgical Support&nbsp;<\/li>\n\n\n\n<li>Mechanical Support&nbsp;<\/li>\n\n\n\n<li>Control de calidad<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">In addition, hiring any employee comes with a slew of not-so-obvious costs that extend well beyond their salary. According to the U.S. Small Business Administration, the true cost of an employee is typically 1.25 to 1.4 times their annual salary. You\u2019ll incur these costs in the form of benefits, training, and certifications, to name a few.<\/p>\n\n\n\n<h3 id=\"common-alloys\" class=\"wp-block-heading\">metallurgical expertise<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Heat treatment isn\u2019t simply heating up and cooling off metal parts. Some cycles are complex, requiring extensive controls, monitoring, and problem solving. Today, most materials in use require specialized processes for optimal heat treating. If new materials are selected for your parts, it would be challenging to meet specifications without metallurgical support.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So, you\u2019ll be faced with a decision: can you afford to bring on the metallurgical support in house? Many manufacturing operations cannot justify the cost of a dedicated metallurgist. However, any commercial heat treater worth their salt will have a team of metallurgists and quality control professionals dedicated to the problem solving, monitoring, and adjustments we mentioned earlier.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">safety awareness<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">It\u2019s no secret that heat treating operations comes with risks. Furnaces operate at temperatures higher than hazardous incinerators, and they are often full of explosive gasses in close quarters with thousands of gallons of oil. It would be a gross understatement to say that safe operation, strict compliance with operating procedures, and knowing how to respond to an emergency are critical.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The safety systems on your furnaces need to be tested and repaired regularly. Many repairs require expertise in dealing with high-voltage systems, and they must be performed within enclosed spaces.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When performing heat treating in your facility, a catastrophic failure is always a possibility. A heat treating accident can result in injuries, property damage, and even loss of life of your team members. Businesses that operate without a team of the proper heat treating experts are taking a huge gamble.<\/p>\n\n\n\n<h2 id=\"minimum-cost-labor\" class=\"wp-block-heading\">the minimum cost of labor\u00a0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Say you\u2019re a manufacturer who operates 24\/7 and runs furnace operations on all three shifts. What are the costs?<\/p>\n\n\n\n<figure style=\"font-size:14px\" class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><\/td><td><strong>Furnace Operators<\/strong><\/td><td><strong>Supervisors<\/strong><\/td><td><strong>Metallurgists\/Process Engineers<\/strong><\/td><td><strong>Mechanics<\/strong><\/td><td><strong>Quality Manager<\/strong><\/td><td><strong>Quality Control Techs<\/strong><\/td><\/tr><tr><td><strong>Base Pay for One Person<\/strong><\/td><td>$18\/hr<\/td><td>$72,000\/yr<\/td><td>$90,000\/yr<\/td><td>$28\/hr<\/td><td>$90,000\/yr<\/td><td>$18\/hr<\/td><\/tr><tr><td><strong>Base Pay for All Shifts Combined<\/strong><\/td><td>$108,000\/yr&nbsp;<br>(1st, 2nd, 3rd)<\/td><td>$216,000\/yr<br>(1st, 2nd, 3rd)<\/td><td>$90,000\/yr&nbsp;<br>(1st shift)<\/td><td>$168,000\/yr<br>(1st, 2nd, and 3rd)<\/td><td>$90,000\/yr<br>(1st shift)<\/td><td>$72,000\/yr<br>(2nd and 3rd)<\/td><\/tr><tr><td><strong>Actual Costs<br>(Base Pay x 1.25)<\/strong><\/td><td>$135,000\/yr<\/td><td>$270,000\/yr<\/td><td>$112,500\/yr<\/td><td>$210,000<\/td><td>$112,500\/yr<\/td><td>$90,000\/yr<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:28px\"><strong>Total Estimated Annual Cost of Labor*<\/strong> = $930,000<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">*This estimate is intended to illustrate the potential cost of a small in-house heat treating team. Labor rates will vary by location and size of your team.<\/p>\n\n\n\n<h2 id=\"support-and-maintenance\" class=\"wp-block-heading\">support &amp; maintenance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">You have probably factored routine equipment maintenance into your budget for in-house heat treating, which is critical to your ability to produce repeatable results from your processing. Like any piece of manufacturing equipment, heat treating furnaces begin to wear and deteriorate from the moment they are put into operation.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can count on repairs to refractory, replacement of high-temperature alloy components, and maintenance of electrical, hydraulic, and pneumatic systems, in addition to routine replacement and recalibration of sensors. Plus, as heat treating standards evolve and IT advances, control systems can become obsolete and require extensive updates.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As if all of this wasn\u2019t enough, truly effective heat treating requires support beyond furnace maintenance. You\u2019ll need plant engineers for equipment upgrades and improvements and equipment calibration services to make necessary adjustments, along with the storage space and budget to keep spare parts on hand. And when you\u2019re unable to achieve the results you need, you have to be prepared to bring in outside consultants to help adjust your process and keep pace with production.<\/p>\n\n\n\n<h2 id=\"operational-costs\" class=\"wp-block-heading\">operational costs<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">You know furnaces don\u2019t run for free, but energy costs are only the beginning of what it takes to run them. Other costs to consider include:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Atmosphere gasses&nbsp;<\/li>\n\n\n\n<li>Quench oil&nbsp;<\/li>\n\n\n\n<li>Cleaners&nbsp;<\/li>\n\n\n\n<li>Equipment overhaul&nbsp;<\/li>\n\n\n\n<li>Piezas&nbsp;<\/li>\n\n\n\n<li>Quality control supplies&nbsp;<\/li>\n\n\n\n<li>Rework and spoilage&nbsp;<\/li>\n\n\n\n<li>Material handling&nbsp;<\/li>\n\n\n\n<li>Personal protective equipment<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">furnaces &amp; auxiliary equipment\u00a0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Heat treating furnaces are rarely standalone pieces of equipment. Usually, they require support equipment for material handling and loading, water or air-cooled cooling systems for quenchants, and storage facilities for quenchants. You\u2019ll also need to consider atmosphere generators and\/or bulk gas storage solutions for nitrogen, argon, hydrogen, or other gasses used for atmosphere and gas quenching. Finally, most parts also require pre- and post-cleaning for a complete heat treating process.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Average footprint of equipment for common furnace configurations:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vacuum + Cooling \u2248 500 ft<sup>2<\/sup> \/ furnace&nbsp;<\/li>\n\n\n\n<li>Belt Furnace \u2248 2,500 ft<sup>2<\/sup> \/ furnace&nbsp;<\/li>\n\n\n\n<li>IQ Furnace + Oil Cooler \u2248 265 ft<sup>2<\/sup> \/ furnace&nbsp;<\/li>\n\n\n\n<li>Temper \u2248 65 ft<sup>2<\/sup> \/ furnace&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">By using valuable plant space for heat treating, you may be incurring opportunity costs. If you could replace your heat treating equipment with another machine tool, what would that mean for your capabilities, efficiency, and throughput?<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">facility-related costs<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Facility-related costs of in-house heat treatment don\u2019t stop at the floor space required for equipment or storage costs for materials. Heat treating in house leads to facilities management challenges. Furnaces run hot and dirty, which can cause deterioration of ceilings, floors, and walls. Within your ventilation systems, deterioration can begin to occur quickly if you are constantly running furnaces.<\/p>\n\n\n\n<h2 id=\"environmental-fees\" class=\"wp-block-heading\">environmental fees<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Waste oil disposal, quench oil spill cleanup, and facility air quality permits and fees should be expected expenses in heat treating operations. If you\u2019ve been heat treating for some time, then past years can be used as benchmarks to plan for future expenses. What\u2019s also important to consider is your organization\u2019s disaster plan or what may happen in the event of environmental contamination originating from your facility.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">environmental contamination can have disastrous results\u00a0<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>One gallon <\/strong>of refined oil lubricant can contaminate 100,000 gallons of groundwater.&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>$25,000 per day<\/strong> fine for negligently discharging oil or hazardous substances into bodies of water or drinking sources in the U.S.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"standards-certs-audits\" class=\"wp-block-heading\">standards, certifications, &amp; audits<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Heat treating requires more than getting the processing right to yield parts that meet specifications. Whether in-house or outsourced, heat treating teams are responsible for meeting more than 30 form completion deadlines for 12 regulations in order to remain compliant with government heat treating standards.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These regulations include OSHA\u2019s Hazard Communication Standard and the EPA\u2019s regulations regarding used oil, underground storage tanks and water treatment, RCRA small quantity generators, and the Clean Air Act. There are also standards governing confined space entry, hazardous material handling, equipment lockout\/tagout, emergency response, and plant air quality.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Maintaining compliance with these complex regulations and certifications can be a full-time job. And once you earn the required certifications and comply with standards, you must maintain them.&nbsp;<\/p>\n\n\n\n<h2 id=\"outsource-advantage\" class=\"wp-block-heading\">the outsourced advantage<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">All of the costs and regulatory complexity associated with in-house heat treating can drain your financial resources and distract you from continuous improvement, innovation, and customer service.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For business owners who have already made investments in in-house heat treating, making the switch to outsourcing allows them to:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Focus on their core business<\/li>\n\n\n\n<li>Distance themselves from complicated regulations&nbsp;<\/li>\n\n\n\n<li>Sell heat treating equipment&nbsp;<\/li>\n\n\n\n<li>Reduce capital expenditures&nbsp;<\/li>\n\n\n\n<li>Reduce operations costs<\/li>\n\n\n\n<li>Mitigate the risk of environmental accidents&nbsp;<\/li>\n\n\n\n<li>Simplify their maintenance program&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Without in-house heat treating draining resources, companies who outsource are left with more time to focus on the core purpose of their businesses. Strategic heat treating partnerships can be a huge competitive advantage, no matter your industry.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">expanded capabilities and equipment variety\u00a0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">One key benefit of working with a commercial heat treater is having access to a wide range of processes and metallurgical expertise. Commercial partners are able to invest in more equipment and larger teams while still being able to operate efficiently and accurately.&nbsp;<\/p>\n\n\n\n<h2 id=\"smart-partnerships\" class=\"wp-block-heading\">smart heat treating partnerships<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Experienced heat treating companies have undergone and planned for all of the contingencies outlined in this guide. Because heat treating is their core business, they are usually better equipped to handle all aspects of running a successful heat treating operation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Expenditures for the gas, electricity, environmental compliance, labor, maintenance, and replacement parts are incurred above and beyond your usual operations cost when you perform heat treating in house. However, these costs represent the core of the business for commercial heat treating companies, so they are able to optimize their processes better than in-house operators. In addition, heat treating companies can run furnaces at full loads for long periods of time, offering a more economical alternative for companies with a small or fluctuating part volume.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">automation and quality control<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Another critical benefit of working with some commercial heat treaters is automation and quality control. Advanced heat treating partners will make investments in technology to make their processes more accurate and efficient than ever\u2014which equates to shorter lead times without compromising quality.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At AST-Paulo, we\u2019ve made significant advances in the world of heat treating to provide unparalleled efficiency, accuracy, and visibility to our customers. Our proprietary technology automatically controls and regulates our furnaces according to your parts\u2019 recipes, significantly reducing the chance of human error.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">recogida avanzada de datos<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A good heat treater will also go well beyond standard requirements in the rate at which processes are being monitored. For example, AMS2750E requires that measurements are taken at least 6 times per cycle with no longer than 15 minutes elapsing between measurements. At AST-Paulo, that\u2019s nowhere close to enough for us or for our customers. We take measurements at least every 15 seconds (and every single second in some applications) for every process we run at Paulo to give our quality team members and our customers complete visibility\u2014and the assurance that their parts were run according to their exact specifications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We\u2019ve also found that advanced data collection paired with a collaborative partnership opens the door for unparalleled paths for R&amp;D projects when proving new specs and translating them into efficient production models. Our metallurgical team has a long history of working closely with aerospace and automotive OEMs to bring new innovations to life in a relatively short period of time.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">trust your parts to paulo<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">With a large network of experienced metallurgists and heat treating experts and advanced heat cycle data capabilities, we\u2019re prepared to help you maximize your in-house productivity and the quality of your parts.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.paulo.com\/es\/solicitud-de-presupuesto-v2-2\/\">Connect with an AST-Paulo expert<\/a> today to start a quote and launch your next heat treating project.<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Is in-house or outsourced heat treating better for your operations? This is the single question asked by all manufacturers who require heat treating for their parts. 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