Engineered for Extremes.
Built to Last.
High-performance alloy castings for the world’s toughest environments—severe service valve, oil & gas, aerospace, polymer/plastic, extrusion/mixing, steel/galvanizing/coating, defense, and beyond.
In-House Foundry & Machine Shop
At Geronimo Alloys, we have been delivering high-quality manufactured components since 1984. With decades of experience, we take pride in designing, casting, and machining precision parts that meet the highest standards—delivered on time, every time.
Backed by over 40 years of technical expertise and a strong commitment to customer service, we’ve built a reputation as a trusted partner across the industrial sector. Our specialization in exotic alloys—including cobalt, nickel-based alloys, stainless steel, and duplex materials—allows us to produce components that perform reliably in extreme environments.
Your Local Alloy Manufacturing Partner in Geronimo & Seguin, TX
The Geronimo Advantage
We want our customers to know that we are available to them 7 days a week, with after-hours directions through the main number, so customers can reach us at any time.
Geronimo Alloys personnel have a combined total of over 250 years of experience in various manufacturing areas. This broad-based level of knowledge allows us to understand your needs and assist in providing the most viable, economically sound solution to critical operational issues.
In a world with riddled with delays and excuses, we provide our customers with not only the highest quality manufactured components, but do so in a timely manner. Depending on the component, our typical turn-around time on parts, averages from 4 to 5 weeks, with expedited delivery options available. OEMs and other manufacturers with 8 to 16+ week turn-around times, do nothing but cost customers time and money. Keeping our customers on-line and making money is what we do!
With input from our customers, the most optimum method of manufacturing is decided, along with consideration input from our foundry, engineering and machining personnel. This team concept allows us to provide the highest quality parts in the most economically efficient means. In the 40+ years of manufacturing, we have come to understand and embrace this concept that has culminated in a best practices approach to solving customer problems.
Geronimo is an ISO 9001:2015/AS 9100-D certified company. Our certification is very important to us, as our customers rely on the products we manufacture to keep them running. Manufacturing high quality components is not easy, but it is simple. Attention to detail and pride in one’s craft is at the forefront of the minds of Geronimo personnel. Customer parts have to be right the first time and on time.
Geronimo’s in-house testing abilities include yield, chemistry, hardness, dye-penetrant and pressure testing. Our test equipment is calibrated per ASTM specifications and we use third party companies to perform certifications requiring x-ray, metallurgical, or ultrasound procedures, to eliminate any conflict of interest.
Having dealt with a wide variety of industries over the years, customers trust us with their designs. Protecting the proprietary information of our customers is of paramount importance to us and we welcome working within the guidelines of confidentiality agreements, non-disclosure agreements and the like, in achieving our customers’ goals. These customers include, but are not limited to, polymer manufacturers, petrochemical manufacturers, rubber manufacturers, valve & pump manufacturers, steel mills, food processors, process industries, etc.
We are an ISO 9001:2015 /AS9100-D Certified company.
Experience You Can Rely On
Geronimo Alloys utilizes state of the art machines. From a Foundry with five (5) furnaces, to CNC Lathes, Mills, EDM, PTA Robotic Welder, etc. our machines provide optimal means to efficiently manufacture the highest quality customer products for use in extreme environments of abrasion, corrosion, chemical impact and/or temperature critical applications.
We view our customer relationships as true partnerships with one goal in mind, to manufacture the highest quality part, at a fair price and in a timely manner. Our experienced staff of technicians and engineers work closely with customer personnel to effectively solve customer issues in a timely manner. With over 250 years of combined manufacturing and machining experience, our team of skilled professionals take pride in their work product and the resulting benefits for our customers.
Industrial applications often demand hands on assessment. In these critical situations, we are well versed in working with customer personnel at every level to assure that the requisite parts work as required and all critical guidelines are met. Ensuring that part design and function lend themselves to increased life cycles of critical parts, is the primary focus of Geronimo. Many times, in order to assure the that the part, material and application operate optimally for our customer, a plant visit by Geronimo Alloys personnel is encouraged. Our experience in design improvements and/or utilizing one alloy over another, are areas of expertise that we provide our customers in increasing the cycle life of their critical parts.
In order to timely and effectively manufacture high quality components for our customers, we stock a wide variety of alloys, including cobalt based, nickel based, 300 series, 400 series and duplex stainless steels. Most alloys, in addition to our in-house inventory, are available upon request.
Since the majority of parts are produced “in-house” by Geronimo Alloys personnel, we are able to ensure the highest quality parts, along with timely delivery.
- Foundry
- Pattern Manufacturing
- 3-D Modeling/Machine Drawing
- Qualified welders: MIG, TIG & Robotic PTA (welding, hard-surfacing, and overlay)
- Heat Treating
- Manual Machining: lathe, mill, and grinding
- CNC Programming
- CNC Machining: Mill, Lathe, Wire EDM
- Broaching
- Pressure Testing
- Spectrograph material identification
For over 40 years, Geronimo has utilized a strategic combination of tried and true technologies with modern day advancements, to provide the best, most economical solution for our customers. These include the use of manual machines (mills, lathes and grinders), wire EDMs and CNC machines (lathes and VMCs).
Geronimo’s adhered to processes and procedures, that guide our product manufacturing, are fully detailed and documented throughout the entire manufacturing process. From certified pours in the foundry to manufacturing/machining to shipping, customer documentation is kept on file, both hard copy as well as electronically, for 10 years after the date of production.
Our Alloys
Geronimo Alloys manufactures parts from a wide variety of generic equivalent to trademarked alloys, as well as stainless steel. Being able to provide our customers with these types of cost effective equivalent alloys, combined with efficient manufacturing times, creates a competitive advantage for our customers and their processes. Although we do not cast components using trademarked alloys, we have purchased trademarked alloy bar stock for some applications. So, if you are looking for a more cost-effective alternative to trademarked materials such as Stellite (with registered trademark symbol), Incoloy® , or Nitronic® alloys for replacement parts, we will manufacture parts according to your required base material. Cobalt-based, nickel-based, stainless, and duplex alloys is our specialty. Our years of experience in casting and machining these alloys into the highest quality parts has been our specialty for over 40 years. We do not PURCHASE or SELL any alloys produced by Kennametal, Inc. and do not use their trademark names.
Parts & Components
Geronimo takes pride in manufacturing high-quality industrial machine components that are resistant to wear and tear in critical environments. We manufacture custom parts for a wide range of industries and applications, which demand a high degree of durability and precision.
With over 30 years of experience producing cast and machined parts for use in extreme conditions including high temperatures, abrasion, corrosion, vibration, tension and compression, or combinations thereof, we specialize in manufacturing the parts that are critical to our customer’s operations. This is why we work hard to produce heavy-duty alloy parts that are up to spec with our clients’ needs.
Meet The Team
Stephanie McGuire
C.E.O./C.F.O.
19 years
Stephanie works with all departments to balance our operational goals with financial reality. She oversees daily operations in each department and performs all facets of accounting while working to maintain a positive workplace and continued success for Geronimo Alloys.
Preston Moses
C.O.O.
36 years
Preston assists our managers with day-to-day operations while working with Business Development and customers to promote the continued growth of Geronimo Alloys.
Steve Ames
Business Development
11 years
Steve leads business development at Geronimo Alloys, focusing on helping customers solve severe-service wear challenges with high-performance alloy solutions. He works closely with engineers, maintenance teams, and sourcing groups across industries such as oil & gas, chemical processing, steel, and power generation.
Kim Carrillo
Office Manager
16 years
Kim ensures the smooth efficient day-to-day operations of the office, as well as being responsible for quotes, orders and customer relations.
Jerry Forbing
Maintenance Manager
38 years
Jerry oversees the repair, upkeep, and installation of machinery and equipment to ensure operational efficiency and safety; as well as helping with manual machining jobs. His years of experience and knowledge are vital to all aspects of operations.
C.R. Hobbs
Machining Manager
18 years
C.R. oversees the daily manufacturing operations and production schedules for CNC and Manual. In addition, he is responsible for quality standards to ensure efficient, safe, and on-time delivery of machined parts. His years of experience allow us to utilize him on all CNC machines and the EDM as needed.
Wyatt McGuire
Foundry Manager
11 years
Wyatt is responsible for the daily metal casting operations. He oversees and ensures production schedules are met safely and efficiently while maintaining high-quality standards. He is a hands-on manager working every process of the foundry operations daily.
Victor Pachuca
Engineering Manager
8 years
Victor manages all aspects of our Engineering department. He builds our manufacturing processes, solid modeling, drawings and CAM programming. His years of experience as a machinist also allows him to assist on the floor when needed.
Cesar Manriquez
Quality Manager
4 years
Cesar oversees our Q.C. department and our QMS Management System to ensure the quality of our system and final products. He is responsible for our ISO9001 and AS9100 certifications, as well as assists with CAD drawings and CAM programming.