Hy-Tuf, AMS 6418, AMS 6425, Aircraft Steel steelmax2019-01-10T11:19:49+09:003월 22nd, 2018| AMS 6418 — Hy-Tuf steels Bars, Forgings, Tubing and Rings. AMS 6425 — Hy-Tuf steels Bars, Forgings, Tubing, Consumable Electrode Remelted UNS K32550 등의 관련 규정을 가지는 강재