Instruction: Generate an answer to the question by utilizing the information contained in the document.

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Question: How well does this rack work for water-bath canning?
Document: Just a simple rack I purchased to go in the bottom of a stock pot to use for boiling water bath canning. Pleased with the sturdiness of the rack. Not 'cheap' feeling. Pleased.
... BWAHAHAHAHAHAHAHAHAHAHAHAHA!! Not unless you need more iron in your diet, in the form of iron oxide!Like several other users, I purchased this rack to place in the bottom of a stockpot for boiling-water-bath canning, and it does fit perfectly in the bottom of the 12-qt. pot I picked up at a megamart, Amazon for once not having what I wanted at a sensible price.
Nice rack, use it on the bottom of my canning kettle to keep jars away from bottom and works well.
I used this for the bottom of my canning pot, and it fit perfectly, but rusted after three uses! I would not recommend it at all for a steamer, as it will rust when submerged in water. Be sure to only use this as a cooling rack.
Every joint was rusted. I've done around ten canning sessions over about a month and a half, and patches of rust now dot the wires like chickenpox. I now drop the rack in just before I set the jars in the near-boiling water, and remove it with a set of long tongs right after I've removed the jars (with the proper jar lifter mind you! ), so that the rack remains in the water for the minimum possible amount of time.
The build quality of this rack is pretty good, especially for the price.Anything placed on the grid will be raised 3/4" off the surface.I got this rack for my pressure cooker, to raise canning jars off the bottom a little bit. Unfortunately, the rack rusted the first time I used it, since it was submerged in water. I did not expect this to happen since I have other racks that have held up to such use.This rack is advertised as suitable for steaming vegetables.
When I go to empty the water from the pot after it has cooled (I am not daft enough to go tipping eight or nine quarts of steamy-hot water into the sink! ), reddish particles have settled to cover the bottom of the pot. My "stainless steel" pot has discolored as well.
Rack is the perfect size. It is being used mainly for steaming timbales in a large skillet, as well as for cooling pastries.
I really like this rack and use it quite often. It is a practical, useful  size and seems to be well made.
Not a lot can be said, well built nicely chromed and reasonably heavy wires so you can use it as a trivet if you run low, not just a cooling rack. The label came off easily too.
Answer: I am new to canning and needed a rack to fit a pot my wife's grandma had. This rack fit perfectly into the 9 and 1/2" pot and since it is sturdy stainless steel it should last awhile. I only have 1 years use so far making grape jelly, jam & pickles but so far so good.