Part for Certainteed awning windows
This piece is unfortunately not available by itself. You will need an all new hinge.
I recommend the 36-048. This should work well for you as long as you replace the top and bottom at the same time. The video below goes into more detail.
I've known some window installers who put the 36-048 (and casement hinges in general) on awning windows. They're not technically supposed to work that way, but window companies still do it and it usually works fine.
They more or less do the same job, but the 36-004-10 is stainless steel. The 36-048 has a powder-coated finish that resists corrosion, but that's its only protection.
If you'd prefer stainless steel then the 36-004-10 would work just fine. I didn't see any particular issue with corrosion on your old hinge so I didn't think to recommend it.