ferritic ss

2.  Steel and stainless steel?
 How many types of stainless steel?
 What is the definition of ferrite stainless steel?
 Application
 Corrosion
 Where Corrosion Attack?
 Corrosion Of Ferrite stainless steel
 Study cases
 Refference

3.  Steel is an alloy made by combining iron and other
element, which the most notable is carbon (max
2.0%)
 Stainless steel is a steel made by adding the
“stainless” protection alloy, which the most notable
is adding chromium (12-21%)
 (Journal of achievement in material and
manufacturing engineering, J. Nowacki, West
Pomeranian University of Technology, Al. Piastów)

4.  Martensitic stainless steel
 Ferritic stainless steel
 Austenitic stainless steel
 Precipitation hardening
 duplex

6.  A low carbon steel (0.08-0.12%) that
combined with chrome (12-21%) and
classified into ferromagnetic type.
 BCC type structure

9.  Welded combination parts.
 Kitchen appliance components.
 Automotive exhaust applications.
 Truck applications.

10.  A destructive attack of a material by reaction
with it’s environment. (handbook of corrosion
engineering, Pierre R. Roberge, page 1)

16.  Causing?
 Type?
 Preventive move?

17.  Tend to coming back to it’s natural shape
which is Fe2O3
 As for structural application, welding
sometimes necessary.

18.  Decreasing toughness beside the welded
area due to the coarse of the grain size
 Embrittlement due to the precipation of Fe-
Cr
 (jounal Dimas Pratama Putra,teknik material
dan metalurgi, ITS, page 1-2)

19.  Intergranular corrosion

20.  Adding more chromium alloy in steel making
(max 21%)
 For welded part.
› Reducing excessive grain coarsening which can
lead to cracking in highly restrained joints and
thick section material. In thicker material, it is
necessary to employ a low heat input to minimise
the width of the grain-coarsened zone and an
austenitic filler to produce a tougher weld metal.

21.  Sastrodikromo company want to expand their
product throughout Asia. In 2000, they use
austenitic type steel due to their great corrosive
resistance, 304 type stainless steel.
 In 2005, one of the alloying element in 304,
nickel, had been greatly increasing it’s price.
 To avoid great loss in economic system, they’d
been searching for the new stainless steel to
throw.

22. ?

23.  Austenitic type 304 using 18% of chromium
and 8% of nickel
 Mainly focused in heat exchanger for
industries

24.  There are several type of ferritic type
stainless steel that has the same qualities
 One of them is 409 type deal
 Designed for muffler stock and heat
exchanger
 Lower price due to lower chromium and the
loss of nickel alloy

25.  F. Jenkins, James and W. Drisko, Richard, Dr.1995.
Standard Society for Protective Coating.
California:SPCC.
 R. Roberge, Pierre. 1999. Handbook Of Corrosion
Engineering. New York: McGraw-Hill Book.
 Nowacki, J. 2009. Ferritic-austenitic steel and its
weldability in large size constructions. Szczecin,
Poland. Journal of achievement in material and
manufacturing.
 Jurnal ITS, 2011, Analisa Hasil Pengelasan SMAW
Pada Baja Tahan Karat Feritik Dengan Variasi Arus
Dan Elektroda

26.  http://www.fischerca.com/tt_reference_ferritic.php
10/12/2012 23:57
 http://www.nature.com/am/journal/v2/n4/full/am201
0111a.html 10/14/2012 16:20
 http://www.twi.co.uk/news-events/news/2011-10-
structural-applications-of-ferritic-stainless-
steels.html 10/18/2012 16:20
 http://events.nace.org/library/corrosion/MatSelect/c
orrstainsteel.asp 10/19/2012 00:31
 http://www.stainless-steel-
world.net/basicfacts/ShowPage.aspx?pageID=477
10/19/2012 01.12