Product Ranges :
» Alloy & Carbon Steel
» Buttweld Fittings
» Stainless Steel Coils
» Stainless Steel Fasteners
  • Stainless Steel Bolts
» Stainless Steel Flanges
» Stainless Steel Pipe Fittings
  • Forged Pipe Fittings
  • Buttweld Pipe Fittings
» Stainless Steel Pipes
» Stainless Steel Plates
» Stainless Steel Round Bars
» Nickel Alloy
» Stainless Steel Tubes
 
Industries we serve
 
Email
 » info@unicornsteel.com
 
Third Party Inspection
 
 
Our Products
Stainless Steel Coils :
Technical Info
Thickness and Max. Width
 
Finishes
Finish
Description
CR
  Work hardened for specific hardness.
2B
  Cold Rolled, Annealed, Pickled and Skin Passed on Polishes rolls.
2D
  Cold Rolled, Annealed and Picked
BA
  Cold Rolled, Bright Annealed and Skin Passed on Polished Rolls.
 
Characteristics and Applications
Stainless Steel Grades AISI
Main Characteristics
Typical Application / End products
 202 High Cold Work hardening rate, good formability. Water Tubings, watch parts, foot rule, Industrial Knives, bus body accessories, Kitchen appliances, Kerosene and Gas Stove parts.
 301 Attains high strength by being cold worked, while retaining good ductility. Used in cold worked condition for springs and wear plates.
 304 Better welding characteristics with good formability and general corrosion resistance. Watch parts, engine gaskets, flexible hoses, foot rule, door, hinges, capillary tubings and sinks.
 304 L Low carbon content, weldable and resistance to sensitisation. Good corrosion and oxidation resistance. Hypodermic needles and capillary tubings.
 316 Superior corrosion resistance to sea water and many chemicals and weldable. Engine gaskets, flexible hoses, process plant and paper industry equipment.
 316 L Low carbon content highly corrosion resistant, weldable and resistant to sensitisation. Process plant parts particularly in thick sections.
 321 Weldable and resistant to sensatitisation. Good corrosion and oxidation resistance. Heater elements, process plant, furnace parts and high temperature tubes.
 409 M  Good corrosion and oxidation resistance
Auto mufflars, catalytic converters and transformer cases.
 410 S Weldable and resistance to scaling. Good corrosion and heat resistance. Turbine blades, fasteners and finishing tackle.
 420 Superior wearability, excellent corrosion resistace and hardenable to 500 BHN. Surgical instruments, knife blades and valve parts.
 430 Superior corrosion resistance and formable. Automobile trim and food processing plants.
 J4 (1%Ni) High cold work hardening rate, normal formability Welded tubes, utensils, kitchen appliances, sinks
 
Mechanical Properties
 
Condition
UTS
N/mm2
0.2 % Proof
Stress N/mm2
%
Elongation
Hardness
RB
202
Annealed
525
225
40
95
301
Annealed
515
205
40
95
304
Annealed
515
205
40
92
304 L
Annealed
485
170
40
92
316
Annealed
515
205
40
95
316 L
Annealed
485
170
40
95
321
Annealed
515
205
40
95
409 M 
Annealed
450
275
20
90
410 S
Annealed
415
205
22
89
420
Annealed
690
-
15
96
430
Annealed
415
205
22
89
J4 (1%Ni)
Annealed
600
300
35
100
 
Tolerance on thickness
Thickness
(mm)

Tolerance on Thicknes (+/-) for width  (mm)
<250
<250 to <500
<500 to <1000
0.05
0.15
0.005
0.005
-
0.15
0.25
0.015
0.020
-
0.25
0.40
0.030
0.040
0.040
0.40
0.60
0.040
0.040
0.050
0.60
0.80
0.050
0.060
0.070
0.80
1.00
0.060
0.070
0.080
1.00
1.25
0.070
0.080
0.080
1.25
1.50
0.080
0.090
0.100
1.50
2.00
0.090
0.110
0.120
2.00
2.50
0.100
0.120
0.150
2.50
3.00
0.120
0.150
0.200
3.00
4.00
0.150
0.170
0.200
 
Tolerance on Width
Condition of Edge

Width tolerance of nominal width(mm)
 
<250
<250 to <500
<500 to <100
Mill Edge
+ 5
+ 10
+ 20
- 0
 - 0
 -0
Trim Edge
+ 5
+ 5
+ 5
- 0
 - 0
 -0
 
Tolerances on Slit Width
Thickness
(mm)
Width tolerance(+ / -) on nominal width ( mm )
   
<150
150 < 250
 250<500
500<1000
0.60
0.15
0.20
0.25
0.50
060
1.00
0.20
0.25
0.25
0.50
1.00
1.50
0.20
0.30
0.30
0.60
1.50
2.50
0.25
0.35
0.35
0.70
2.50
4.00
0.30
0.40
0.40
0.80
 
Chemical Composition
Stainless Steel
C
Si
Mn.
Cr.
Ni
P
S
Other
Grade AISI
Max.
Max.
Max.
Max.
Max.
Elements
202
0.08
1.00
7.5 / 10.00
17.00 / 19.00
4.00 / 6.00
0.060
0.030
  
-
301
0.15
1.00
2.00
16.00 / 18.00
6.00 / 8.00
0.045
0.030
  
-
304
0.08
075
2.00
18.00 / 20.00
8.00 / 10.50
0.045
0.030
  
-
304 L
0.03
0.75
2.00
18.00 / 20.00
8.00 / 12.00
0.045
0.030
  
-
316
0.08
0.75
2.00
16.00 / 18.00
10.00 / 14.00
0.045
0.030
Mo:2.00 / 3.00
316 L
0.03
0.75
2.00
16.00 / 18.00
10.00 / 14.00
0.045
0.030
Mo:2.00 / 3.00
321
0.08
0.75
2.00
17.00 / 19.00
  
9.00 / 12.00
0.045
0.030
Ti : 5X % C min.
409 M
0.03
1.00
1.00
10.50 / 12.50
1.00 max
0.030
0.030
Ti : 0.75 max
410 S
0.80
1.00
1.00
11.50 / 13.50
0.60 max
0.040
0.030
  
-
420
0.35
1.00
1.00
12.00 / 14.00
0.75 max
0.040
0.030
  
-
430
0.12
1.00
1.00
16.00 / 18.00
0.75 max
0.040
0.030
  
-
J4(1%Ni)
0.10
0.75
8.50/10.00
15.00/
16.00
1.2 max
0.090
0.030
-
 
 
 
 
 
Copyright Act © 2011, Unicorn Steel India.
Designed & Developed By : Sharzaat