Technical data of JSL Aus grades - Gual Steel

TECHNICAL DATA SHEET
Jindal Stainless Steel Grade JSL AUS(J1)
General Characteristics
Jindal Stainless Steel type JSL AUS(J1) is
a low nickel chrome-manganese austenitic
stainless steel. Modest amount of nitrogen
added to this steel results in higher
annealed strength than AISI-304.
However, copper addition reduces work
hardening rate to facilitate cold
working/forming. The alloy is nonmagnetic
in annealed condition and like
AISI-304 becomes mildly magnetic after
cold working. Cold forming
characteristics are superior to AISI 201
and 202 and the chemistry is so optimized
as to achieve drawability similar to AISI-
304.
JSL AUS has been used for many
applications where type AISI-304 was
traditionally chosen. JSL AUS is
relatively economical compared to AISI-
304 having formability and weldability
comparable to AISI-304 with corrosion
resistance superior to AISI-430. Type JSL
AUS is used both in fully annealed and in
partially or fully cold rolled condition.
The mechanical properties vary
considerably depending upon the amount
of cold work introduced. The strength in
JSL AUS is slightly higher than
conventional austenitic steel (such as type
304). Considering its lower cost JSL AUS
can replace conventional AISI 304 in a
wide range of applications.
Chemical Composition (%Wt)
Elements As per Jindal Typical
Product Standard
Min Max
C
Mn
S
P
Si
Ni
Cr
Cu
N
Fe
-
6.0
-
-
-
4.0
16.0
1.5
-
Balance
0.08
8.0
0.005
0.06
0.75
6.0
18.0
2.0
0.10
Balance
0.07
7.20
0.005
0.05
0.45
4.1
16.2
1.7
0.08
Balance

Mechanical Properties
UTS (MPa)
YS (MPa)
% Elongation
Hardness
(HRB)
Ericcson
Cupping Value
Type
JSL AUS
550 min.
205 min
40 min.
95 max.
12-14
Type 304
515 min.
205 min.
40 min.
92 max.
12-13.5
Test as per
ASTM A262
Practice B
(Boiling Ferric
Sulfate
50% Sulphuric
Acid)
Practice C
(65% Nitric Acid,
Boiling)
Corrosion Rate
(mmpy)
JSL Type
AUS 304
2.46 1.05
0.93 0.32
Typical Values
UTS (MPa)
YS
(0.2%)(MPa)
% Elongation
Hardness(HRB)
Ericcson
Cupping Value
665
310
55
87
12.9
560
262
55
83
13.1
Practice E
(Copper/16%
Copper
Sulfate/Sulfuric
Acid, Boiling)
Practice A
(Oxalic Acid etch
Test)
No
cracks
Step
Structure
No
cracks
Step
Structure
Corrosion Properties
Intergranular Corrosion
General atmospheric corrosion of
JSL-AUS in non-coastal atmosphere is
comparable with Type 304. In
intergranular corrosion test as per
ASTM 262, JSL AUS and Type 304
behave similarly in practice A and
practice E tests. However, in boiling ferric
sulphate and nitric acid, JSL AUS exhibits
slightly inferior performance to Type 304.
Corrosion in various food
application media
A series of corrosion tests in salt and
organic acids, generally encountered in
food processing and food packaging
industries, clearly indicates that JSL AUS
is a good cost effective substitute to Type
304 in many applications. Acetic acid is
present in vinegar. When milk
deteriorates, lactic acid is produced. Citric
acid is commonly present in fruit juices
and tartaric acid is an ingredient in

tamarind extracts commonly used in
Indian households. JSL AUS has been
tested in individual acids and in
combination with varying concentration to
asses its corrosion resistance properties.
The salt spray test in 5% NaCl
environment shows JSL AUS has similar
or even better resistance to common salt
in comparison with Type 304.
Test media
3% NaCl for 720
hrs
at RT(25 o C)
3% NaCl for 100
hrs
at Boiling Temp.
(0.5%Citric+0.5
%Tartaric)
for 720 hrs at RT
(0.5%Citric+0.5
%Tartaric)
for 100 hrs
boiling
(0.5%Acetic
+0.5%Lactic) for
720 hrs at RT
(0.5%Acetic
+0.5%Lactic) for
120 hrs at
Boiling Temp.
Corr rate
(mmpy)
JSL AUS
Corr rate
(mmpy)
304
0.0004 0.00132
0.0114834 0.001066
0.0005525 0.0000034
0.006721 0.000018
0.0018 0.00051
0.0101 0.001669
Note: The corrosion rate less than
0.02mm per year (mmpy) is considered
excellent (Ref: Mars. G. Fontanna,
Corrosion Engineering, Table 4-5, P 172)
Salt Spray Test
5% NaCl environment (for 120 hrs)
Grade Corrosion rate (mmpy)
JSL AUS 0.0003729
304 0.00044
Heat Treatment
Type JSL AUS is annealed between
1050–1100 o C. The annealing temperature
should not exceed 1100 o C to avoid
excessive oxidation and grain coarsening.
The primary purpose of annealing is to
relieve strain, recrystallize the material if
it has been cold worked and to take
carbides into solution. For JSL AUS,
rapid cooling through the carbide
precipitation range (500–800 o C) is
necessary to avoid the precipitation of
carbides at grain-boundaries.
Fabrication
Welding
Type JSL AUS can be welded by all
conventional methods applied to 18/8
type of austenitic stainless steel. Filler
wires or electrodes of the conventional
chromium-nickel 300 series can be used.
Its susceptibility to intergranular
corrosion in weld heat-affected zone is
analogous to AISI 304.
Hot Working
JSL AUS can be readily rolled or forged,
and required similar power for a given
reduction as in case of AISI 304 stainless
steel.

Cold Working
JSL AUS is very tough and ductile and
readily amenable to deep drawing,
bending, stretch forming and spinning.
After heavy cold working, it is only
mildly magnetic like 304.
Typical Applications
Catering & Food Processing
Deep drawn utensils, Pressure cookers,
Water filters, Storage vessels, Milk cans.
Consumer Durables
Spin driers of Washing machine,
Microwave ovens, Decorative trim, Dish
washers, Thermo ware.
Architecture, Building & Construction
Doors and window frames, Column
claddings, Furniture, Bus shelters,
Telephone booths, Pipes and Tubes, Hand
rails, Ornamental tubes, Tree guards, and
Kitchen sinks.
Transport (Automotive)
Automotive trim, Wheel caps, Wiper
arms, Rims, Auto accessories.
Industry
Beer, Wine, Beverage, Dairy equipment,
Food processing and packing equipment
Product and Surface Finish *
Product
Size (mm)
Surface
Process
Edge Condition
t x w x l
Quality
HR Coil
2.8-6.0 X 1050
Black
HR
Mill
No.1
HRAP
Trim / Mill
HR Plate and
4.0-50.0 X 1250 max X
No.1
HRAP
Trim / Mill
Sheet
7000 max
2D
CRAP
Trim / Mill
CR Coil and
0.4-4.0 X 1250 max
2B
CRAP+SP
Trim / Mill
Sheets
No.3
CRAP+SP+G
Trim / Mill
No.4
CRAP+SP+G
Trim / Mill
* For details, refer to Technical Brochure of Jindal Stainless.
HR- Hot Rolled, CR- Cold Rolled, HRAP- Hot Rolled Annealed and Pickled,
CRAP-Cold Rolled Annealed and Pickled, SP- Skin Pass, G- Ground.

Notice:
• Information in this document is
only for the explanation of general
characteristics and properties of
JSL products, not for the guarantee
for the material.
• Technical information in this
document is subject to change by
environment condition and the
purpose of use.
Contact for information:
Marketing Division,
Corporate Office,
Jindal Center,
12-Bhikaiji Cama Place,
New Delhi- 110066
Tel- +91(011)26188340-50
Fax- 91(011)26161271
E mail: info@jindalsteel.com