BÖHLER N700

BÖHLER N700 covers a corrosion-resistant steel in the form of bars, wire, forgings in the solution heat treated condition.

It is a martensitic precipitation hardenable chromium-nickel-copper steel possessing high strength and toughness. Further strength increments can be obtained by cold forming, followed by a precipitation hardening treatment.

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. However, use is not limited to such applications. Improved corrosion resistance compared to the 13% or 17% chromium steels. Remelting processes are used to improve steel purity and homogeneity. (ESR, PESR, VAR)

Certain processing procedures and service conditions may cause these products to become subject to stress-corrosion cracking.

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).

Typical applications are reactor construction, highly stressed pump parts and springs