Related Conditions

300 Series

303 Stainless Steel 1.4305

BS: 303S31 | EN: 1.4305 | AISI: 303

Austenitics are the most popular stainless grades, due to their excellent corrosion resistance & formability. Carbon, Molybdenum Titanium and Sulphur are added to the basic austenitic composition structure (Iron, Chromium, Nickel), to create variants with altered properties. 303 is considered the free-machining austenitic 300 series grade.

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303 Stainless Steel 1.4305
Rounds
Bright Ground
2.5
3.3
4
4.25
5
5.3
5.969
6
6.2
6.35
6.6
7
7.1
8
8.25
8.94
10
10.21
11
12.243
12.7
13
14.287
15.239
15.875
16
16.256
18.262
19.3
19.9
20
20.243
20.637
22.529
25.273
25.654
28.829
30.252
32.26
35.306
36.25
38.404
40.309
41.275
45.288
45.313
50.292
51.104
55.295
57.505
60.324
63.855
70.307
76.581
82.931
90.5
95.25
101.6
107.95
120.65
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Diameter Tolerance
f6 h6 h8 h9
5 x
6 x
6.35 x
16 x
25 x
40 x x
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Can’t find what you are looking for? More sizes available on request. Click here to get in touch!

  • 2.5
  • 3.3
  • 4
  • 4.25
  • 5
  • 5.3
  • 5.969
  • 6
  • 6.2
  • 6.35
  • 6.6
  • 7
  • 7.1
  • 8
  • 8.25
  • 8.94
  • 10
  • 10.21
  • 11
  • 12.243
  • 12.7
  • 13
  • 14.287
  • 15.239
  • 15.875
  • 16
  • 16.256
  • 18.262
  • 19.3
  • 19.9
  • 20
  • 20.243
  • 20.637
  • 22.529
  • 25.273
  • 25.654
  • 28.829
  • 30.252
  • 32.26
  • 35.306
  • 36.25
  • 38.404
  • 40.309
  • 41.275
  • 45.288
  • 45.313
  • 50.292
  • 51.104
  • 55.295
  • 57.505
  • 60.324
  • 63.855
  • 70.307
  • 76.581
  • 82.931
  • 90.5
  • 95.25
  • 101.6
  • 107.95
  • 120.65
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  • 5 f6
  • 6 f6
  • 6.35 h9
  • 16 h6
  • 25 f6
  • 40 h6
  • 40 h8
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Your Enquiry
Grade: 303 Stainless Steel 1.4305
Size(s)
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Overview
Properties
Applications

Supplied Condition (where applicable):

  • We supply 303 in the annealed condition to max hardness 183 HB
  • Specifications: BS 970 / EN 10088-3 / ASTM A582

 

Chemical Composition (%):

C Cr Ni Mo
≤0,10 17,0-19,0 8,0-10,0
  • Lower corrosion resistance than 304 making it unsuitable for highly corrosive environments
  • Hardened only by cold working
  • Good toughness & formability, but poor weldability
  • Non-magnetic
  • Automotive trim
  • Cookware
  • Food and beverage equipment
  • Storage tanks
  • Pressure vessels
  • Piping
  • Processing equipment
  • Building & construction
  • Variety of other industrial applications

Supplied Condition (where applicable):

  • We supply 303 in the annealed condition to max hardness 183 HB
  • Specifications: BS 970 / EN 10088-3 / ASTM A582

 

Chemical Composition (%):

C Cr Ni Mo
≤0,10 17,0-19,0 8,0-10,0

  • Lower corrosion resistance than 304 making it unsuitable for highly corrosive environments
  • Hardened only by cold working
  • Good toughness & formability, but poor weldability
  • Non-magnetic

  • Automotive trim
  • Cookware
  • Food and beverage equipment
  • Storage tanks
  • Pressure vessels
  • Piping
  • Processing equipment
  • Building & construction
  • Variety of other industrial applications

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