Patent ID: 11969368
Assignee: BIOTYX MEDICAL (SHENZHEN) CO., LTD
Field: Materials, metallurgy (Chemistry)
Classification: CPC A  C  B | IPC A  B  C

Claim 12:
13. The lumen stent preform according to claim 12, characterized in that:
when the pure iron blank and the iron alloy blank are both incompletely annealed structure, the hardness of the pure iron blank is greater than 90HV0.05/10, the hardness of the iron alloy blank is greater than 110HV0.05/10, and the microstructures of the pure iron blank and the iron alloy blank are deformed structures; and
when both the pure iron blank and the iron alloy blank are completely annealed structure, the hardness of the pure iron blank is 90HV0.05/10, the hardness of the iron alloy blank is 100-150HV0.05/10, and the microstructures are both equiaxed grains with a grain size scale greater than or equal to 4.