BlackStar H40A44 - 40 Pitch A-Plate Sprocket - 44 Tooth 2.9/16" What is the temperature rating

What is the temperature rating of 3/B93

"price":"6559

and Jason Industrial 2/D112

"text": "The 18/3VX900 is rated for continuous operation from -40°F to 230°F

BlackStar H40A44 - 40 Pitch A-Plate Sprocket - 44 Tooth 2.9/16" What is the temperature ratingThe BlackStar H40A44 is a 40 pitch A Plate roller chain sprocket with 44 teeth, precision manufactured from SAE 1045 steel with induction hardened teeth for extended wear life and features machine cut tooth profiles for smooth, reliable chain engagement. Specifications Part Number H40A44 Chain Pitch 40 Number of Teeth 44 Bore Type Plain Bore Hub Style A Plate Strand Count Single Material Steel Hardened Teeth Yes Outside Diameter 7. 29" Pitch Diameter