The Alpenföhn Blitzeis thermal compound is advertised by the manufacturer with a supposedly extreme thermal conductivity of 15.2 W/m-K. This impressive figure is of course intended to suggest that it is the ideal choice for anyone looking for maximum performance. However, as is so often the case, there is once again a wide gap between claim and reality. In practice, it turns out that the paste has two faces in terms of thermal conductivity and even tends to release various gases when heated (outgassing), which leads to the formation of bubbles in the applied layer. This bubble formation significantly impairs durability and can also have a negative impact on the cooling performance of the entire system in the long term. The supposedly high-performance product quickly becomes a risk factor for system stability. And this is exactly what I have to write about today, because this paste is currently being hyped in various forums. You simply have to act.
Especially as the prices starting at 12 euros (including shipping) for just two grams border on hucksterism if you look at the solid competitors in the mid-range performance field. Because there are much cheaper and better options. Forum influencing is always one of those things. One person gets one out and everyone follows…
Violations of legal regulations
Actually, I should preface this paragraph with almost all pastes, but it’s just about time again, as this is a German supplier: The marketing of thermal compound in Germany and the EU requires compliance with strict legal requirements, especially within the framework of the REACH Regulation (EC No. 1907/2006). One of the central requirements is the provision of safety data sheets, which must contain detailed information on the chemical properties, potential hazards and safety measures of a product. The lack of such safety data sheets is not only a violation of the legal requirements, but also harbors potential dangers due to improper handling.
According to the CLP Regulation (EC No. 1272/2008), clear labeling of chemical products is required to provide users with information on hazard classes and precautionary measures at a glance. The lack of labelling makes it difficult for users to recognize the potential risks and react appropriately, which jeopardizes both safety and legal certainty. The registration of substances and mixtures in relevant databases, such as the European Chemicals Register (ECHA database), is also mandatory. This database enables the tracking of chemical substances, their classification and compliance with REACH requirements. The Federal Institute for Occupational Safety and Health (BAuA) is the competent authority in Germany to which companies must register chemicals and submit information. A lack of registration or incomplete information in these systems can not only lead to severe penalties, but can also make it legally impossible to sell a product.
In addition, there is a fake CE mark on the packaging. The imprint with the recycling… I hope that the packaging has also been properly registered. A common feature of an incorrect CE mark is a deviation in the design, particularly in the proportions and spacing of the letters “C” and “E”. According to the official EU specifications, the letters are defined by specific geometric requirements. Here, the horizontal bar in the E is flush on the outside and the letters are further apart. It probably stands for “China Export”, which looks confusingly similar.
Nice accessories such as spatulas, alcohol pads for cleaning or even foils for pasting are also available and they look very similar to those of a paste that has already been tested. But you can happily do without such trinkets, which cost almost nothing to buy, if at least the performance and durability are right. Here, however, there is a lot of gimmickry for almost nothing. This is exactly what we have to find out and prove today, even if I have already spoiled a certain limitation above.
The operating temperature range is specified as between -20 and 130 °C, which seems rather atypical, as silicone oil, as used in heat-conducting pastes, typically has a maximum temperature resistance of up to around 250 °C and, with very high-quality formulations, even up to a maximum of 300 °C, depending on the chemical composition and the specific additives. But we will never reach that anyway. The data on thermal conductivity was measured in a bucket, if at all, or just thrown out.
Well, that’s enough of an introduction, because I already had a pretty thick neck during the test. Not just anatomically speaking…
Alpenföhn Blitzeis Wärmeleitpaste, 2g (84000000216)
![]() | 1-3 Werktage | 8,90 €*Stand: 12.02.25 15:59 |
![]() | Sofort ab Lager | 8,90 €*Stand: 12.02.25 20:46 |
![]() | Onlineshop: lagernd, 24-h Service möglich, Lieferung 2-3 WerktageHannover/Laatzen: lagernd (keine Online-Reservierung möglich)Berlin, Dortmund, Düsseldorf, Hamburg, München, Stuttgart: nicht lagerndStand: 12.02.25 20:29 | 8,90 €*Stand: 12.02.25 20:31 |
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