Form

This specification covers a premium aircraft-quality corrosion-resistant steel in the form of bars, wire, forgings, mechanical tubing, flash welded rings, and stock for forging, flash welded rings, or heading.

Application

These products have been used typically for parts requiring corrosion resistance and high strength up to 600 °F (316 °C), but usage is not limited to such applications.

Certain processing procedures and service conditions may cause these products to become subject to stresscorrosion cracking; ARP1110 recommends practices to minimize such conditions.

For applications, such as bolting, where stress-corrosion is a possibility, the product should be precipitation heat treated for not less than 4 hours at the highest temperature compatible with the strength requirements but in no case lower than 1025 °F (552 °C).

Classification

Product covered by this specification is classified as follows:

Type I - Steel multiple melted using vacuum consumable electrode in the final melt.

Type II - Steel multiple melted using electroslag process in the final melt.

Unless a specific type is ordered, either type may be supplied.