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Correct abbreviation for Stainless Steel

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A discussion started in 2004 & continuing through 2017 -- add your Q to bring it back to the Hot Topics page.

(2004)

Q. What is the correct abbreviation for Stainless Steel? Is it "SS", "SST", or are they both used interchangeably? Thanks for the help.

Nick Tsingas
personal - Temecula, California, USA


(2004)

A. Good question, Nick. Surprisingly, neither French's "Engineering Drawing" nor the "Machineries Handbook" seem to take a position on this (I couldn't find anything in fifteen or twenty minutes of looking). I worked in engineering departments for 20 years and 'SST' was universal on every drawing, although an occasional renegade would try 'S.S.' But in running this website I almost never see anyone using 'SST' in their inquiries and responses, so I've fallen into their same habit of using 'SS' to forestall people asking what SST is. Besides people here keep using SST as an abbreviation for Salt Spray Test :-)

Ted Mooney, finishing.com
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


(2004)

A. Since there are hundreds of different corrosion-resistant alloys that are informally called stainless steel, each with its own set of corrosion resistance and mechanical properties, doesn't seem to be any need for a standard abbreviation for the phrase "stainless steel". If anybody wants to call out one such alloy, they will need to use its unique identifying code in order to get the correct material.


Bill Reynolds
   consultant metallurgist
Ballarat, Victoria, Australia

We sadly relate the news that Bill passed away on Jan. 29, 2010.


(2004)

A. At least in the aerospace industry, you'll see the phrase "cres" or "CReS", meaning 'corrosion resisting steel', as a synonym for stainless steel.

lee gearhart
Lee Gearhart
metallurgist



(2004)

A. Along the last four years I was carrying out a research on "Stress Corrosion Cracking of Duplex Stainless Steels". Never to come across something like SST . The common abbreviation of Duplex stainless steels is DSS.

Farej Elhejaji
Materials - Tripoli


(2004)

thumbs up sign Thanks, Bill. The need for some kind of abbreviation for stainless steel will vary by context, but if someone writes a letter to us and they want help with passivating type 304 stainless steel plates, the subject line of the letter can't be "Need 304 plates passivated", although "Need 304SST plates passivated" would suffice; "Need type 304 plates passivated" might do, but not as well. The cutting lists or bills of material on the drawings I was referring to earlier would read something like: 3/16" x 3-1/4" 316 SST x 0'-4-1/2" long. Leave out 'SST' and it gets a bit unintelligible.

Thanks, Lee.

Thanks, Farej.

Ted Mooney, finishing.com
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


(2006)

A. I note that ASME Y14.38 [link by ed. to spec at TechStreet] - "Abbreviations and Acronyms" - has only one abbreviation for stainless steel for use in drawings and in text - that is "Stainless steel = SST"

David Selwyn
- Bunbury, Western Australia


(2007)

thumbs up sign Hi, I was just looking for the abbreviation for Marine Grade 316 Stainless Steel, and managed to find your site, which is excellent. I am a 3rd year BePrimary Education also completing 2nd year BeTechnology in Engineering and Graphics.

I will now be putting '316SST' as the material used in my engineering drawing.

Thanks all.
=]

Elizabeth Bate
- Brisbane, QLD, Australia


(2007)

A. SS is actually a specific designation in the fence industry for a cold rolled steel product (used for a stronger fence post instead of say schedule 40). SS should NOT be used as a designation for Stainless Steel. I always used to use STST but after reading this post, I will follow ASTM guidelines and use SST.

Cheryl Smith
- Chicago, Illinois, USA


March 2, 2011

A. I've been doing plan review for just over 6 years for a construction Firm and I strongly agree with Ted. I use SST for Stainless Steel and SS for Sanitary Sewer.

Brian,

Brian McShane
Project Manager - Carmichael, California, US


August 25, 2011

A. ASME B31.1 is using S.S. abbreviation for stainless steel.

Lazar Gantman
- San Diego, California


July 8, 2017

Construction Dictionary

A. Construction Dictionary, 9th ed., published by The National Assoc. of Women in Construction, has listed:

ss = single strength (glass)
SS = stainless steel
sst = standing seam tin (roof)

Side note: this dictionary has been one of the most helpful tools in my architecture licensing process and construction career.

BUT, when it comes to construction drawings, I agree that S.S. is Sanitary Sewer and SST is Stainless Steel.

Lesson: always use a legend

Guy Brignac
- Cape Canaveral, Florida, USA


July 12, 2017

A. Any given set of letters tends to have hundreds of valid acronyms. (source: acronymfinder.com)

In any given document, define your acronym the first time it is used.

Even if a given acronym is universally known within your industry, a reader from outside your industry will be clueless as to what you're talking about.

Ray Kremer
Stellar Solutions, Inc.

McHenry, Illinois


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