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BaP at cold heading operations



Beginning from 2015, concerns on PAHs and BaPs have been quite apparent in the metalworking industry. Actually, some petroleum origin products, such as process lubricants, can release PAHs and BaP under hard operation circumstances. French Health Insurance authority issued a recommendation, with reference R.451, regarding the “Prevention of chemical risks caused by cutting fluids”. It possesses data by the INRS* about the risks and thresholds in connection with BaP contained in new and in-service neat cutting oils.

While this issue is regularly raised at usage of machinery neat oils, there are no advices for cold heading operations. HSE and CSR convictions as guidance, CONDAT decided proceeding by considering this question and by expexcting the regulation.

HAP / BaP : Explaining

PAHs, also called polynuclear aromatic hydrocarbons, form a family of numerous compounds (benzo[a]pyrene, anthracene, naphthalene…). 16 PAHs are routinely analysed and have been defined as carcinogenic. One of the most toxic and best known is BaP benzo[a]pyrene. It serves as a tracer for the analysis of PAHs because it is found in an almost constant proportion: the concentration in PAHs is 10 times that of BaP.

Know-how as a capitalist instrument

With in-depth knowledge on how to reduce PAHs/BaPs in in-service machining oils, that led to the development of NEAT GREEN oils – new generation machining oils that do not show any increase in BaP content after 1,500 hours of machining – CONDAT took the lead and requested its R&D laboratory in early 2018 to work on new formulas for cold heading oils with neutral impact in terms of BaP. Beyond its CSR commitment, the company also wants to address the concerns of automotive suppliers and provide its customers with the safest possible products. The objective was to co-develop with major automotive groups a high-performance product for very difficult forming operations.

After 6 months of research, the EXTRUGLISS HT 268 VP was born. In partnership with a first grade automotive supplier, the product has been tested for nearly 12 months on cold heading operations for the manufacture of seat pinions and hubs, and showed very good results.


Available for sale since June 2019 and following the success encountered with this partner, EXTRUGLISS HT 268 VP is positioned as a premium product specially formulated for extreme operations that generate excessive heat (stainless steel, alloy steel with high elastic limit…). Developed to solve BaP emissions problems, this neat cold heading oil is formulated from high quality, highly refined base oils; it contains fewer residual compounds that may degrade to PAH. Much more stable and pure, it resists to oxidation, increases the life of the baths and facilitates degreasing by preventing the formation of sticky residues on the parts. Less volatile, it limits oil evaporation and mist generation, thus improving the atmosphere in the workshops.

Highly additive formula presents high level performance for all difficult processes on hard metals such as stainless steel and alloyed steel.

This cold heading oil, with multi purposes, provides high-class lubrication features, while at the same time, spectacular performance of oil is observable at deformation processes. The viscosity is 68 cSt. This value meets the requirements for large cold heading machines.

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