Compositions Material Compositions > About Technical SpecificationsAbout Specifications Cast Alloys Strip/Plate Rod, Bar & Tube Compositions PropertiesAbout Properties Physical Properties Strip Properties Plate Properties Rod, Bar & Tube: Berylco Alloy 25 (UNS 17200) Properties Rod, Bar & Tube: Berylco Alloy 14 (UNS 17510) Properties Cast Alloy Properties: Density & Thermal Cast Alloy Properties: Mechanical Material SafetyAbout Material Safety SDS Berylco Tools/Handling NGK Work on Buyer’s Premises Machining Guidelines Temper Terminology Certificates of Registration White Paper UNS Alloy No.BERYLCO AlloyCompositionWeight% C17000165Be Ni+Co Ni+Co+Fe Cu+Be+Ni+Co+Fe1.6-1.85 0.2 min. 0.6 max. 99.5% min. C1720025Be Ni+Co Ni+Co+Fe Cu+Be+Ni+Co+Fe1.8-2.0 0.2 min. 0.6 max. 99.5% min. C1751014Be Ni Cu+Be+Ni0.2-0.6 1.4-2.2 99.5% min. *Determined by Optical Emission Spectroscopy