{"id":321,"date":"2013-11-12T16:00:46","date_gmt":"2013-11-12T16:00:46","guid":{"rendered":"http:\/\/www.surgicalholdings.co.uk\/blog\/?p=321"},"modified":"2021-12-06T17:11:41","modified_gmt":"2021-12-06T17:11:41","slug":"choice-of-stainless-steel-for-surgical-instruments","status":"publish","type":"post","link":"https:\/\/www.surgicalholdings.co.uk\/blog\/2013\/11\/choice-of-stainless-steel-for-surgical-instruments\/","title":{"rendered":"Choosing Stainless Steel"},"content":{"rendered":"

We’ve been asked recently why surgical instruments<\/a> generally aren’t manufactured from 440 stainless steel, which is a good question. 440 would generally be used for cutlery, swords, it can also be hardened up to 58 Rockwell, making it much harder than the higher of the 420 range stainless steels that are normally used for surgical instruments.<\/p>\n

I think the main reason would come down to the slight pliability on the 420 stainless. 420 offers a bit of ‘give’ when hardened which is perfect for artery forceps<\/a>, needle holders, dissecting forceps\u00a0and means they are not too brittle. 440 also has a lot more carbon in it, which is the reason it can be made a lot harder; this may have an impact when washing and sterilising, as if not dried or processed correctly, there could be an increased risk of corrosion, however, 440 also has a lot of chrome, so bright polished finish should counteract this.<\/p>\n

This is worth a read for some further education \u00a0http:\/\/en.wikipedia.org\/wiki\/SAE_steel_grades<\/a><\/p>\n

ISO 7153\u00a0does highlight that 440 can be used for items that are required to be very rigid and hard, such as scalpels and shears, so perhaps it could be considered as an alterative for dissecting scissors, where a tungsten carbide edge is normally required. with a higher chrome content, it could be argued that it will wash better.<\/p>\n","protected":false},"excerpt":{"rendered":"

We’ve been asked recently why surgical instruments generally aren’t manufactured from 440 stainless steel, which is a good question. 440 would generally be used for <\/p>\nRead more<\/a>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-321","post","type-post","status-publish","format-standard","hentry","category-industry"],"yoast_head":"\nChoosing Stainless Steel - Surgical Holdings<\/title>\n<meta name=\"description\" content=\"what stainless steel should be used for surgical instruments.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.surgicalholdings.co.uk\/blog\/2013\/11\/choice-of-stainless-steel-for-surgical-instruments\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Choosing Stainless Steel - 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