Originally Posted by Meridian
That's the good stuff...should be 3/8 Acco hi-tensile. Look at a link...should be stamped "G-4".
The 'G40 HT' is NOT a hi tensile chain. The HT stands for 'Hi-test' which basically means they elevated the load used during the Proof Test. By doing this you can claim a higher WLL. WLL is 1/2 of the proof load.
BUT and it a BUT worth noting, by pumping up the Proof Load to pump up the WLL it means the Safety
margin has been decreased. In Acco's G40 HT case the Safety
Margin is down to 2.5:1 where everyone elses G40 has a lower published WLL but with a 4:1 Safety Margin.
While Acco makes fantastic chain, no question about that at all, thier G40 chain will break at the same time as anyone else G40 whether is tagged 'HT' or not.
This HT is another good strike by the marketting department and a pretty damn clever one when you think aboiut it. John like many others fell into the HT = Hi Tensile trap, it's very common.
FYI - In the US the 'HT' tag is used extensivly but it is still a Grade 40 (Grade M is the new name) so if you are outside of the US buy a Grade 40 and you'll have exactly the same thing.
FYI 2 - There are only a very few real Hi Tensile anchor chains that are galvanised. PWB in Aussie make a Grade 50 (marginal Hi tensile). Acco (US), Maggi (Italy) and Gunnebo (Sweden) all make a Grade 70 (assorted names inc Schedual 7, Aqua7 and more) finished and galvanised. These are seriously strong chains but as they are a complete arse to galvanise without strength lose they do cost.
I sell 100's of 1,000's of metres of anchor chain a year and still struggle to see why you would want to use a real Hi-Tensile chain, it just doesn't stack up when talking performance.
And don't be stupid enough to buy a Grade 70 or 80 chain and get it galvanised unless you have so much money
you can afford to sit down afterwards and be happy to call it a 'learning exersize'. Galvanising a G70 would leave you with a Grade 50 at best, most likely a huge pile less. Buy a proper one unless you don't plan on sleeping or hate your boat.