Katy Spring has large capacity, high-temperature ovens that can age-harden high-nickel alloy materials such as: Inconel, Inconel X, Elgiloy, 17-7 Stainless, Monel, K Monel, Hastalloy and more! Contact us today for your high nickel, custom spring requirements. 281-391-1888 #heattreat #customsprings #katyspring