AISI: American iron and steel institute has identified various stainless steel formulas and classified them.
ASTM: American Society of Testing and Materials sets the standard for metal material.
Austenitic: A stainless steel that cannot be heat-hardened. Stainless steel that falls into this category is 300 series stainless steel, which is highly corrosion resistant.
Martensitic: A stainless steel that can be heat hardened. Stainless steel that falls into this category is 400 series, which is subject to corrosion due to lack of nickel.
Rockwell Scale: A method and scale used to measure the hardness of metals.
Stainless Steel: The most popularly used in metal in the manufacturing of surgical instruments Stainless steel stains and stainless steel rusts.
304 Stainless: Used to make bowls and basins.
316 LVM Stainless: Used to make implantable devices such as pins, plates and screws.
420 Stainless: Pakistan-made and disposable quality instruments are made of this type of stainless steel.
Sterling Silver: Used to make probes and tracheotomy tubes.
Titanium: Very strong and non-magnetic, lightweight metal used for microsurgical instruments. This metal is identified by its blue color and is stronger and lighter than stainless steel.
Tungsten Carbide: An extremely hard metal used in jaws of needle holders and blades of surgical scissors. When tungsten carbide is used, the handle of the instrument will be gold in color.
Pakistani-Made Surgical Instruments: Most surgical instruments are made in Pakistan. In fact 75% of all surgical instruments are made in Pakistan. The vast majority of them are made in Karachi, Islamabad and Lahore. Most suppliers will look to Pakistan to make descent quality low priced surgical instruments.
German-Made Surgical Instruments: Besides Pakistan, Germany makes the 2nd most surgical instruments the world. These are typically more expensive but higher grade quality. Most suppliers will buy from Germany if there looking for a better grade surgical instrument.
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