I have a larger power hack saw and it is slow but it will make incredible straight cuts. I needed some discs about 3-4 inches in diameter, put a bar of unknown steel and sliced off a squaring cut. Bumped it over after a slight loosening of the vise. Third cut and there is my disc, almost perfect parallel faces. I cut 3 more just for fun! You never know when you will need a disc for a hot government project.
It uses 17 or 18" blades with tooth counts from 14 to 3 teeth per inch. Very easy to swap blades.
The 3-6 TPI blades for thick cuts, the chips look like part off cuttings. There is almost always the need for cooling fluid of some sort. And don't catch the chips like the fellow who saw me testing the saw with a coarse 3 TPI blade. The chips were falling into the chip pan and making small puffs of smoke. He caught some before than I stop him! It didn't take him long to look at them! Small white cooked spots and as this saw had a speed control I was running as slow as possible. Be sure on flame cut material that you grind thru and hardened areas or your blade will be destroyed. I think your saw will be using regular hack saw blades. Buy the best bi-metal blade you can get. They will last for a long time. Since power hacks are no longer in vogue they often have clearance sales on blades. Keep you eyes open for these sales.
When a blade becomes dull or gets all the teeth on one side ruined you still have some good material for knifes, scrapers or other tools.
I hope it becomes yours, they are great tools.