Looking at boat ladders and seeing 304 and 316 stainless. I understand that the numbers mean the stainless is made of different metals but, is one that much more superior (as far as use in a ladder) that I should look for one over the other?
Thanks
“Apathy is the Glove into Which Evil Slips It’s Hand”.
316 L us superior in corrosion resistance. The L means low carbon.
We use 316 L for equipment/piping that comes in contact with extremely corrosive chemicals.
If the price difference us small, 316 us the better material.
After more reading, 316 us recommended for salt water . But this is for heavy industrial/40 year service application… 304 is probably fine for a boat.
316 whenever you can is best.
Capt. Larry Teuton
Swamp Worshiper
316 is better for salt. High chloride levels cause crevice corrosion. It happens faster in the heat affected zone around welds.
With that said, a 304 ladder would likely still outlive the boat., depending on quality of construction and whether or not the builder passivated the assembly after welding.
boring metallurgy stuff I learned in welding class 30 some years ago.
Boat drinks, Waitress I need 2 more boat drinks!
Thanks guys, that was the info I was looking for. I worked in a pipe business years ago and we sold 304 and 316 but not for boat ladders, just wanted some “expert” opinions.
“Apathy is the Glove into Which Evil Slips It’s Hand”.