As this subject has been mentioned on another thread (by Rohan), I thought this may be of interest -
COMPARISON OF ANTI-SEIZE TYPES
Historically there have been three basic types of Anti-Seize on the market:
COPPER BASE
Copper base anti-seize offers good corrosion protection on all kinds of steel, but not stainless steel. Copper on stainless steel creates an inter-crystaline corrosion, which can make actual stainless steel parts crack and break. This is why the nuclear power plants do not allow copper with any material which comes in contact with the stainless steel parts.
Temperature Range: 2200? F
ALUMINUM BASE
Aluminum as a base material for Anti-Seize is good for use on stainless steel, but cannot be used on carbon steel, due to the fact that when it comes in contact with an electrolyte it becomes an anode and since this anode is extremely small in volume compared to the large cathode of the steel, it usually deteriorates quickly, leaving no protection at all on the steel surface. Corrosion therefore takes place at a higher rate of speed, as if no anti-seize would have been present.
Temperature Range: 1470? F
NICKEL BASE
Nickel has been used extensively in Anti-Seize materials, because it has good anti-seize and corrosion protection for both steel and stainless steel. However, nickel has been for many years, on the list of carcinogens ( cancer producing products ) and should not be used in applications where nickel based anti-seize is used on materials handled in workshops.
Temperature Range: 2500? F
METAL-FREE ANTI-SEIZE - depacproducts.net/
Depac Metal-Free Anti-Seize can be used in all applications, is free of any hazardous metal particles, is nontoxic, and is totally environmentally friendly.
Temperature Range: Subzero to 2500? F
Source - depacproducts.net/anti.html
Sadly, other than good old copaslip etc, most of these products seem fairly expensive in the UK. It could be cheaper to buy in the US and pay the carriage! Why is that? Rip Off Britain rears it’s head again?
I have also read that it is NOT advised to us copaslip on spark plugs going into an aluminium head as it can promote “galvanic” corrosion! News to me.
Copper V Nickel - agradetools.com/review-top-anti-seize-2018
Here is an interesting thread, most of which goes over my head. (Brain seize?)
bobistheoilguy.com/forums/u … /2904468/1