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American Flux & Metal LLC

352 Fleming Pike, Hammonton, NJ, 08037
EST. 1994

AF&M provides ESR Flux and molybdenum to the aerospace, chemical and automotive industries.  We are the world's largest producer of ESR flux, a chemical refining agent used to produce high performance superalloys.  Our molybdenum products are also used in superalloys, as well as for the coatings on automotive parts and as catalysts in the production of chemicals.

All of the products we offer are produced at our 30,000 square foot facility in Winslow, New Jersey.

We are committed to a safe working environment for our employees and to providing the highest quality products to our customers.

Custom Powders and Products 


Over 20 years of Experience

AF&M specializes in producing high purity (99.9%+) molybdenum.  We provide pellets (used as feed stock for Vacuum Induction Melting), pure powder for catalysts and additive manufacturing, and thermal spray dry powder.

All products are available to customer purity and sizing requirements.

Product Spec Sheets available upon request.  


The Conference

ESR Flux 

AF&M is the world's largest producer of pre-fused Electro- Slag Remelting Flux (ESR) used in the production of super alloys and other specialty steels. 

ESR Flux is predominately a fused combination of calcium fluoride, calcium oxide and aluminum oxide.  Due to the demanding quality requirements of our customers, AF&M  secures high quality raw materials and analyzes them in our ISO/IEC 17025:2017 accredited laboratory.

We provide a wide variety of specialty formulations tailored to customer requirements.  We have very close technical relationships with our customers and have developed many proprietary fluxes for them.  We can control for electrical resistivity, surface tension, molten density, composition, impurities and more. All specialty formulations are held in strictest confidence.

We offer premix and unfused version of all flux products for customers utilizing "hot start" techniques.

Product Spec Sheets available upon request.   









About Us

     HWR LLC, the parent company of American Flux & Metal, is owned and operated by the children and grandchildren of its founder Hirsch Wolf Rudoler (whose initials were “HWR”). Hirsch Rudoler, a German-Jewish immigrant, came to the United States with his wife and seven children in 1938. HWR, founded in Philadelphia, Pennsylvania in 1948, was originally in the business of reprocessing scrap fabrics from garment and carpet manufacturers into new yarns used in carpets and outerwear.

     For over 50 years the Company was operated by Hirsch’s children, Joachim Rudoler, Max Rudoler and Lola Chandler. During the 1970’s, the company transitioned into the public warehousing business, eventually owning/operating half a million square feet of warehouse space at four locations in and near the Port of Camden, NJ (across the Delaware River from Philadelphia).

     In 1994, HWR purchased the manufacturing facility that became AF&M from Climax Molybdenum (today, a division of Freeport-McMoRan). The facility first began producing molybdenum products in the 1960s and added ESR flux to its product line during the 1980s.

     Today, AF&M is led by Hirsch’s son and grandson, Joachim and Stuart Rudoler. We are proud to be a third generation family manufacturing business and look forward, with the support of our dedicated employees, to many more years of serving our customers.

About Us

Analytical Lab

Our lab has a full range of analytical equipment to measure all raw materials and products while also offering outside analytical services to customers. We are ISO/IEC 17025:2017 accredited and Reach certified. 

On site we have, 

2 Icp-Aes

2 Leco Carbon/Sulfur Analyzers

2 Leco Oxygen/ Nitrogen Analyzers

1 Microtrac Particle Size Analyzers

1 Fluoride Testing Apparatus

1 FISE Potentimoter Apparatus 

1 Fisher Particle Sizer 

2 Thermoline Testing Furnaces (1200C)

Particle Size Analysis Equipment 

Physical Property Testing Equipment

More equipment is available for special analysis 


Contact us

Along with the current product list, research into new products, and toll processing services, outside analytical services are encouraged. Feel free to contact us with your interests and we will do our best to find a way to provide the services you require. 

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