Lebronze alloys Group was born from the integration of different companies specializing in copper alloys, copper, nickel alloys, aluminium alloys, specialty steels, stainless steels, titanium and nickel superalloys.
Thanks to a multidisciplinary know-how, the Group provides innovative solutions to all major industries such as Aerospace, Oil & Gas, Power, Railway but also in sectors manufacturing smaller equipment and products.
Our 14 production facilities and 1,300 employees manage a unique range of metal processing technologies: continuous and semi-continuous casting, sand casting, die precision chill casting (manual, mechanized and automated), centrifugal casting, extrusion, ring rolling, hot and cold rolling, drawing, open-die forging, hot stamping, closed-die forging, cold forming, machining, non-destructive testing, etc.
The Group’s commitment is to find appropriate and optimized solutions for every sector’s requirements.
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COVID-19 Customers news release
LBA supports its customers and partners in the resumption of their activities...
Copper in the fight against the risk of infection :
The case of COVID-19
Lebronze alloys (LBA), together with its scientific partners...
COVID-19 Customers news release
The LBA teams are more than ever mobilized and united in the face...
Lebronze alloys (LBA), together with its scientific partners , and within the antimicrobial cluster of the Grand Est region , has been carrying out research for more than ten years on the behaviour of bacteria, fungi and viruses in contact with copper alloys in order to reduce the risk of infection.
This paper proposes a review of scientific publications on the role played by surfaces in the transmission of microbial contamination - particularly concerning COVID-19 - as well as a synthesis of the know-how developed by LBA.
In the past, the role of contaminated surfaces (fomites) in the transmission of healthcare-associated infections may have been largely underestimated [3, 4].
However, recent evidence suggests that fomites may play an important role in the transmission of infections [3, 5-9]. Studies also highlight the importance of surface cleaning and disinfection to reduce the transmission of infection-causing micro-organisms [4, 10, 11].
This is especially true since some pathogenic and opportunistic micro-organisms can survive on surfaces for up to several days or even months if they are not cleaned or disinfected .
The effectiveness of copper and copper alloys in killing a very large range of viruses and bacteria - including bacteria with multiple antibiotic resistance mechanisms (AMR) that cause the most problematic healthcare-associated infections - has been known for several decades and has been highlighted by numerous publications [13-17].
The installation of copper-alloy door handles and handrails in residential care facilities for the elderly has demonstrated a very large and significant difference - a reduction of about 60% - in the number of bacteria on copper surfaces compared to surfaces made of conventional materials [18, 19].
The benefit for residents has been measured in outbreaks involving hand-transmitted viruses (gastroenteritis or conjunctivitis) : a recent study on a large-scale installation of copper handles and handrails has shown that the number of infected people is four times lower in areas equipped with copper alloys than in areas without .
In vitro, the survival time of SARS-CoV-2 coronavirus on different surfaces such as stainless steel, glass or plastic varies from a few hours to a few days, depending in particular on humidity .
This persistence on surfaces suggests that the most frequently touch surfaces could be temporary reservoirs of SARS-CoV-2 contamination, leading to a risk of hand-to-hand transmission . During the coronavirus SARS crisis (CoV-1-SARSS) in Hong Kong in 2003, the hand-to-hand transmission route appears to have been a significant factor in the occurrence of infections .
The in vitro survival time of CoV-2-SARS and other coronaviruses (MERS, CoV-1-SARS, Human Coronavirus 229E) on copper is described as much shorter than that observed on stainless steel or plastic [25, 26].
This suggests that copper and copper alloys could contribute to a barrier role in the current COVID-19 pandemic and in hand-transmitted outbreaks generally.
LBA has worked on copper alloy door handles and handrails to protect residents of elderly care facilities from germs deposited on surfaces by other residents, healthcare workers or visitors.
The main parameters influencing the effectiveness of the alloys were identified and analysed as part of the CUPROCARE collaborative research project (January 2016 - April 2020). All of this work was carried out with the support of the Marne department and financed in particular by European funds and by the Grand Est region. They were based on the results of studies in institutions [18, 19]. These last two studies were led by Pr Sophie Gangloff (University of Reims Champagne Ardenne (URCA)), conducted by Dr Marius Colin (URCA), and steered by an independent scientific committee composed notably of : Dr Fabien Squinazi (Former Director of the Hygiene Laboratory of the City of Paris), Dr Olivier Meunier (Hagueneau Hospital), Pr Christophe de Champs (Reims University Hospital and URCA), Pr Jean-Luc Novella (Reims University Hospital and URCA), Pr Raphael Duval (University of Lorraine) and Pr Christine Roques (Toulouse University Hospital and Faculty of Pharmacy of Toulouse).
Solutions have been sought to maximise the efficiency of copper by working, for example, on the composition of the alloy and the search for compatible cleaners.
The composition of the alloy is essential to combat surface ageing. Indeed, following hand contact on the handle and cleaning operations, a reaction layer - a few tens of nanometres in size - will develop and a layer of organic matter will be deposited. It is essential to remove these layers, which in the long term are harmful to the aesthetics and effectiveness of the copper alloy. Lebronze alloys has therefore developed a solution to maintain the aesthetics of copper and above all its effectiveness over time.
Lebronze alloys believes that it is its duty to share widely these different elements and is ready to exchange with all scientific actors and health authorities who would be interested in these studies.
The Lebronze alloys group
 Warnes, S. L., Little, Z. R., & Keevil, C. W. (2015). Human coronavirus 229E remains infectious on common touch surface materials. MBio, 6(6), e01697-15. Source