Glass Metal Seal ASTM F30 FeNi52 Low Expansion Alloy Wire

ASTM F30 / Nickel Alloy 52 / N52 / Niloy52 Low Expansion Alloy Wire

Heat Treatment For Alloy52
(1) Stress relief annealing In order to eliminate the residual stress of parts after machining, stress relief annealing is required: 430~540℃, heat preservation 1~2h, furnace cooling or air cooling. [1]
(2) Intermediate annealing In order to eliminate the work hardening phenomenon caused by the alloy in the process of cold rolling, cold drawing and cold stamping, in order to facilitate the continued processing. The workpiece needs to be heated to 700~800℃ in a vacuum or protective atmosphere for 30~60min, then furnace cooled, air cooled or water quenched.
(3) Pre-oxidation treatment When the combined gold is used as a sealing material, it should be pre-oxidized before sealing. A uniform and dense oxide film is formed on the surface of the alloy. The parts are heated in saturated wet hydrogen at 1100°C for 30 minutes, and then oxidized in the air at about 800°C for 5-10 minutes. The weight gain of the parts should be 0.1~0.3mg/cm2

FeNi52 Low Expansion Alloy Wire

ASTM F30 Low Expansion Wire

Glass Metal Seal FeNi52 Wire

Glass Metal Seal ASTM F30 FeNi52 Low Expansion Alloy Wire Images