125 Years of ARMCO® Innovation: AK Steel International Adds 17-7 PH® to Stock
Expanding our stock portfolio of high-performance precipitation hardening stainless steels with ARMCO® 17-7 PH® Condition A round bar for aerospace, engineering and high-strength applications.
The "A" in AK Steel International stands for ARMCO®. As a company we trace all the way back to the original American Rolling Mill Company started in 1899. It should come as no surprise that, as an EN9120 accredited distributor of stainless steel, we focus on distribution of original ARMCO developments.
We stock 17-4 PH®, 15-5 PH®, PH 13-8 Mo, NITRONIC® 50, NITRONIC 60 and ARMCO Pure Iron. In the coming weeks we will welcome another original ARMCO stainless steel development to our stock program: ARMCO 17-7 PH® in the form of Condition A round bar.
ARMCO 17-7 PH, originally introduced to the market in December of 1948, is a semi-austenitic precipitation hardening stainless steel, derived from AISI Type 301. The grade is widely used for applications requiring good corrosion resistance combined with high strength. Bars, rods and forgings are used primarily in aircraft structural parts. The two available heat-treated conditions offer a minimum yield stress of 965 MPa and 1034 MPa respectively, and minimum UTS values of 1172 MPa and 1276 MPa.
The initial stock will consist of delivery-length hot-rolled reeled and peeled round bars, per ASTM A564 (Type 631) and AMS5644 (UNS S17700), in sizes Ø 25,4 mm (1 inch), Ø38,1 mm (1½ inch), Ø 44,45 mm (1¾ inch) and Ø 50,8 mm (2 inch).
AK Steel International will start to receive 17-7 PH round bar in Condition A in the coming weeks for distribution.
If you’re looking for 17-7 PH in condition R100, or for 17-7 PH in coil, sheet, strip, plate or wire instead of round bar; then please contact us.
AK Steel International specializes in the marketing of premium steel products such as ARMCO® Pure Iron, stainless steels and high‑performance alloys for demanding automotive, aerospace and industrial applications.