Braze Alloys produce corrosion resistant joints.May 3, 2007 -
Boron-free braze alloys AMDRY®105, AMDRY®108, and AMDRY®805 are suited for joining applications for heat exchangers, catalytic converters, and EGR coolers. Composed from minimum of 23% chromium by weight, alloys produce corrosion resistant joints for steel, stainless steel, and superalloy components. AMDRY®105, AMDRY®108, and AMDRY®805 feature phosphorous rather than boron, and are offered in powder, paste, and custom-sized tape forms.
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Original Press release
Sulzer Metco
1101 Prospect Ave.
Westbury, NY, 11590
USA
New AMDRY® Braze Alloys Offer a New Advantage in Automotive Applications
03/16/2007 New high chromium boron-free braze filler metals developed by Sulzer Metco, a Swiss based surface solutions company, were introduced early this year providing a uniquely cost effective and more reliable manufacturing material to automotive component manufacturers.
The innovative braze alloys marketed under the AMDRY® brand - AMDRY®105, AMDRY®108 and AMDRY® 805 - are exclusive filler metals designed for greater corrosion resistance and strength. These new products deliver superior performance in joining applications for heat exchangers, catalytic converters and EGR coolers, at an equal or lower cost than traditional materials.
AMDRY®105, AMDRY®108 and AMDRY® 805 each have higher chromium content compared to most other nickel-based braze alloys in the market. A minimum of 23% chromium by weight produces strong, corrosion resistant braze joints for steel, stainless steel and superalloy components.
The anti corrosion characteristics of these braze materials have been proven to deliver positive results. Corrosion and high temperature oxidation tests on braze samples of AMDRY®105, AMDRY®108 and AMDRY® 805 indicate superior corrosion resistance compared to BNi-2 and BNi-5 test samples.
According to Dr. S. Rangaswamy, Product Line Manager and Head of Development Metals and Alloys at Sulzer Metco, the "metallographic examinations did not reveal any corrosive attack on the AMDRY®105, AMDRY®108 and AMDRY® 805 braze joint samples that were put under rigorous aqueous solutions test parameters for the duration of 150 hours". He also affirms that, "When tested for 24 hours at 810 °C (1500 °F) under air-atmosphere furnace, results clearly indicate there was no significant weight changes compared to the pre-oxidation weight of the test samples."
AMDRY®105, AMDRY®108 and AMDRY® 805 braze in the same temperature range as the alloys currently used in heat exchangers, catalytic converters and EGR coolers. Phosphorous in these filler metals act as a boron-free alternative to reduce the braze temperature range and improve ductility for improved burst strength in heat exchangers. In AMDRY®108 and AMDRY® 805 iron replaces some or most of the nickel content, reducing the cost and the impact from increasing nickel prices.
The diverse forms in which these products are available to the market offer efficient and economical benefits. AMDRY®105, AMDRY®108 and AMDRY® 805 can be purchased as powder, paste, custom-sized tape, and customized performs for ease of applications and improved in-process reproducibility that reduces production costs.
Sulzer Metco offers a complete portfolio of surface solutions: A broad range of thermal spray, thin film and other advanced surface technology equipment, integrated systems and material Specialized coating and surface enhancement serviceas Manufactured components for the turbine, automotive and other industries Customer support services Sulzer Metco provides a manufacturing, distribution and service network and caters to aerospace, power generation, automotive and other strategic growth industries.
To take control of your surface engineering challenges, contact your Sulzer Metco sales office, visit our website at www.sulzermetco.com or email us at info@sulzermetco.com.
Sulzer Metco offers engineered surface solutions and services that include: Equipment and materials for thermal spray and thin film Coating services for thermal spray and thin film Plasma heat-treatment services Engine components for industrial and aero turbines Customer support services Sulzer Metco provides a global manufacturing, distribution and service network and focuses on industrial and technical markets such as aerospace, power generation, automotive and other specialized industries
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