Forged ring:
We could provide you qualified forged rings as below.
Material:
Alloy steel: Nitralloy; Maraging 250, 300, 362, 4140, 4130, 4330, 4340 etc.
Carbon Steel: CK35, CK45 etc.
Stainless Steel: 200, 300, 400, 500 series, Nitronic 40, 50, 60, 80 etc.
Tool Steel: A2-A10, D2, D3, D5, H11, H12, H13, M2, M50 etc.
Heat resistant Steel: Tungsten, Molybdenum etc.
Nickel Alloy: Nickel 200, 201, 204, Monel 400, 402, 403, 404 etc.
Heat resistant Steel: Tungsten, Molybdenum etc.

Supply Condition: Black (forged), Rough Machined, Semi-Finish Machined
If you have any interest, welcome to contact with me!