AISI Classifications

  • Thread starter daveg
  • Start date
  • #1
1
0

Main Question or Discussion Point

Hello

I am currently studying a class called Materials Science externally. One of the assignments I have to do is in regards to AISI Classifications but I can not seem to get my head around it. I was wondering if someone could point me in some direction with this particular question:



Nominate the American codes for the following listed metals and their uses:

0.40% carbon steel
1.3% carbon steel
4% nickel alloy steel
1% chromium alloy steel
62% copper 35% zinc brass
5% phosphate bronze
99.6% alumium

Where there are more than one code for any of the 8, nominate all of the codes.
Where there are more than one use for any of the 8, nominate all of the uses.
 

Answers and Replies

  • #2
Astronuc
Staff Emeritus
Science Advisor
18,824
2,052
A number of technical societies e.g. AISI, ASTM, SAE, etc, provide specifications for metals (alloys) and non-metals.

For example stainless 304 (AISI grade), or 304SS, has the designation of S30400 in the UNS (Unified Numbering System), which is managed jointly by the American Society for Testing and Materials (ASTM) and the Society of Automotive Engineers (SAE). The Aerospace Materials Specification (AMS series) is maintained by SAE. The American Iron and Steel Institute (AISI) maintains a set of standards (specs) on steels.

304SS is an 18-8 austenitic stainless steel, with about 18% (18-20) Cr and 8% (8-11) Ni, with Mn (~2%), Si (~1%), C (0.08% max) and other limits on impurities like S and P. See the spec - http://www.metalinfo.com/sample_standard.cfm - which has a comparison of various standards. The same material is covered by ASTM spec A276.

For AISI grades, see - http://en.wikipedia.org/wiki/AISI_steel_grades

AISI website is www.steel.org


UNS - http://www.materialsengineer.com/E-UNS-designations.htm [Broken]
Matweb search by UNS - http://www.matweb.com/search/SearchUNS.asp
http://en.wikipedia.org/wiki/Unified_numbering_system
http://www.key-to-steel.com/Articles/Art111.htm

For discussion of stainless steel specifications and applications, see -
http://www.key-to-steel.com/default.aspx?ID=Articles#p12
More general - http://www.key-to-steel.com/default.aspx?ID=Articles

In the US, the specifications include - ACI / AISI / SAE (AMS) / ANSI / API / ASME / ASTM / AWS / DOD / FEDERAL / MIL / UNS

and cover the following elements and alloys
Aluminum, Brass, Bronze, Carbon Steel, Copper, Iron, Lead, Magnesium, Nickel, Special Alloy, Stainless, Tin, Titanium, Zinc

Each alloy class has its own set of specs by different organizations. The objective here is identify the class of alloy designated.

For example, 0.4% carbon steel is a medium carbon steel, where as 1.3% carbon steel is a high carbon steel. See - http://en.wikipedia.org/wiki/Carbon_steel

99.6% alumium - is nearly pure Al.

Besides Wikipedia, one can search on Matweb - http://www.matweb.com/search/SearchComp.asp - by composition.

Or search using Google for particular alloys.


Specs from other countries:

Australia - AS / ADS
Austria - ONORM
Belgium - NBN
Bulgaria - BDS
Brazil - ABNT
Canada - CSA / DEF
China - GB / YB
Czechia - CSN / Slovakia - STN
Denmark - DS
Europe - EN / EURONORM
Finland - SFS
France - AIR / NF
Germany - DIN / SEW / WNR
Great Britain - BS / DEF
Hungary - MSZ
India - IS
International - ISO / COMECON
Italy - UNI
Japan - JIS
Mexico - NOM
Netherlands - NEN
Norway - NS
Pan America - COPANT
Poland - PN
Romania - STAS
Russia - GOST
South Africa - SABS
Spain - UNE
Sweden - MNC / SIS
Switzerland - SN / VSM
Turkey - TS
Yugoslavia - JUS
 
Last edited by a moderator:

Related Threads on AISI Classifications

  • Last Post
Replies
1
Views
12K
  • Last Post
Replies
1
Views
15K
Replies
2
Views
1K
Replies
3
Views
1K
Top