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**Please note: These are not just a normal bolt. They are Hydrogen Embrittlement Resistant. (This is a corrosion inhibitor)
‘Hydrogen Embrittlement occurs when metals become brittle as a result of the introduction and diffusion of hydrogen into the material. The degree of embrittlement is influenced both by the amount of hydrogen absorbed and the microstructure of the material. Microstructures which bestow high strength, often monitored by hardness level, or having specific distributions of grain boundary particles or inclusions, can result in increased susceptibility to embrittlement. The phenomenon usually becomes significant when it leads to cracking. This happens when sufficient stress is applied to a hydrogen-embrittled object. Such stress states can be caused both by the presence of residual stresses, associated fabrication operations such as forming and welding, and applied service stresses. The severity of hydrogen embrittlement is a function of temperature: most metals are relatively immune to hydrogen embrittlement, above approximately 150°C.’
(Source: twi-global.com)
Thanks for the previous order, great service and am spreading the word.
Today I received the BMW parts I ordered yesterday( spark plug covers) I just wanted to say a huge ‘thank you’ for such excellent prompt service. The previous order I placed with you guys was also received the next day. I will recommend your organisation to any of my friends Again, Thanks heaps Cheers