In response to L080042-00, Is 303 stainless steel acceptable in the LIGO Vacuum system?

Document #:

LIGO-L080044-x0

Document type:

L - Letters and Memos

Abstract:

Guidance on if and when free-machining stainless steel (303, 303S, 303Se) is permitted in the LIGO vacuum system.

Files in Document:

• L080044-00.pdf (27.7 kB)

Topics:

• Vacuum
• Document Migration from the old DCC

Authors:

• John Worden

Keywords:

UHV stainless steel

Notes and Changes:

Clarification added to the original prohibition against the use of 303 or 303Se stainless steel in the LIGO observatory vacuum system; Small parts such as fasteners or hardware can be comprised of 303 or 303Se.
Rev L080044-00-V:
- Full document number: LIGO-L080044-00-V
- Author(s): John Worden
- Document date: 2008-04-28
- Document received date: 2008-05-06
- Document entry date: 2008-05-06

Referenced by:

• LIGO-E960050-v13: LIGO Vacuum Compatible Materials List