ASTM F Standard Specification for Wrought Stainless Steels for Surgical Instruments. ASTM F – Download as PDF File .pdf), Text File .txt) or read online. ASTM F Find the most up-to-date version of ASTM F at Engineering
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Students Click Here Join Us! Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Some implantable grade alloys may have cleanliness requirements. Since I don’t have an internal specification to cite I’ve gone back to referencing F However, F is for surgical instruments non-implantable and do not have such requirements unless it is inherent to the grades.
Click Here to join Eng-Tips and talk astn other members! Astk property requirements, heat treating requirements, hardness requirements and all other requirements except chemistry are governed by the appropriate material standards as referenced below or as agreed upon between the purchaser and supplier.
The ‘simple’ solution is to spec A but I’d rather understand where the problem lies. Fore example, there is melting requirement for Mo but that is not regulated by F Promoting, selling, recruiting, coursework and thesis posting is forbidden. Register now while it’s still free! Join your peers on the Internet’s largest technical engineering professional community. Classes of stainless steels covered here are Class 3 austenitic stainless steelClass 4 martensitic stainless steelClass 5 precipitation hardening stainless steeland Class 6 ferritic stainless steel.
The Architecture, Engineering and Construction AEC industry is constantly looking for process improvements to better manage potential project delays and costs. A is widely used whereas F is limited to surgical applications.
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A – ASTM A vs. F Certification? – Steel and Stainless engineering – Eng-Tips
Distributors will have steels certified to A most of the times. F99 F spec is medical grade material. The data contained in Tables 1- 4 of this specification, including typical hardness values, common heat treating cycles, and examples of selected stainless steels that have been used for surgical instruments, is provided for reference only.
This specification covers the chemical requirements for wrought stainless steels used for the manufacture of surgical instruments. I don’t know if it requires re-melting or vacuum melting but those may be needed to meet the cleanliness. Large distributors that have many medical-grade buyers or have long term agreements with such customers will have direct certification to F from mills. Historical Version s – view previous versions of standard.
It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. Can someone enlighten me? You do own current copies of both specs, and any referenced general spec, right? Few part suppliers are willing g899 certify the material by their own but rather rely on certs from mills or distributors.
Close this window and log asrm. Part manufacturers would like flexibility to buy steels from any distributors- small but sufficient quantity at a time. Since you are trying to invoke them as contract terms you have better make sure you have copies.
Relatively large distributors can re-certify the material if your company allows. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Resources Few production environments have the luxury of ordering new equipment to replace existing machines on their shop floor. I admit there is probably an additional burden to certifying to F but I’m not sure what it is; and that doesn’t necessarily explain the discrepancies in my experience.
It’s possibly my memory, but I haven’t admitted that yet. By joining you are opting in to receive e-mail. However, now I’m getting notice from vendors that they are not able to source that material unless they buy a considerable minimum qty which is no good for price or time.
F instead imposes a narrower compositional range, mostly 0. It will have a cleanliness requirement. Now at my current company we have an internal specification for some materials e. They can either re-test or simply verify mill-cert properties against F and issue another certificate under their own name.
In the short term I’ve been able to get around this by agreeing the material certified to A is “compliant” to F and is therefore acceptable. Reasons such as off-topic, v899, flames, illegal, vulgar, or students posting their homework.
I believe that A is fine and has no discrepancy. It’s easy to join and it’s free. As far as I am aware, the chemical requirements of F are identical to those of the referenced specification with a few exceptions I don’t believe A is one of them. This is ast, and inventory issue. I do not know why and do not see benefit. Thank you for helping keep Eng-Tips Forums free from inappropriate posts. Work Item s – proposed revisions of this standard.
Link to Active This link will always route to the current Active version of the standard. The data contained in this specification, such as typical hardness values, common heat treating cycles, and examples of selected stainless steels that have been used for surgical instruments, are provided for reference only.