High Expansion 19-7

High Expansion 19-7 is an iron-nickel-chrome high expansion alloy that will strengthen to greater than 175 ksi yield. Oxidizes readily at high temperatures, this alloy is usually annealed in protective atmospheres or vacuums. It has higher Cr content than its sister 19-2 counterpart to provide additional oxidation resistance, at a sacrifie to its expansion coefficients.