01226 766766
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Duplex

F51 Duplex

EN: 1.4462 | AISI: F51 | UNS: S31803 | Our Brand Name: Aquinox

F51 is a high-Chromium & moderate Nickel stainless, with 3% Molybdenum. Its composition is 50% Austenite & 50% ferrite, providing a combination of both properties.

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Home | Grades | F51 Duplex
F51 Duplex
Rounds
Bright Ground
6.604
8.255
10.21
12.954
16.256
20.244
22.479
25.654
28.829
30.252
32.256
35.306
36.245
38.404
40.309
41.554
45.313
47.879
51.104
55.295
57.505
60.324
63.881
65
65.354
70.307
75.361
76.2
76.4
76.581
76.962
80
80.467
82.931
85
85.445
88.9
89.281
89.916
90
90.449
90.5
91
95.631
96.24
100.5
100.7
101.981
102
102.235
105.5
108.331
111
112
116
116.5
121
121.158
122
127.762
128.016
131
131.5
133.35
136
140
141
141.5
146.05
147
151
151.25
152.4
153.162
153.5
156.5
160
161
161.5
162
165.1
166.5
171
171.45
172
172.5
176
176.5
177.8
180.762
181
181.5
182
186
186.5
191
192
195
196.5
201
204.216
204.495
205
210
210.762
211
220
220.762
221
228.6
232
236
241.3
250
254
260
266.7
280
304.8
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Diameter Tolerance
h8 h9
25 x
25.4 x
30 x
31.75 x
35 x x
38.1 x x
44.45 x x
45 x x
50 x x
50.8 x x
55 x
57.15 x x
59.994 x
60 x x
63.5 x x
69.85 x
70 x x
75 x x
76.2 x x
80 x
90 x
95.25 x
100 x
101.6 x
110 x
114.3 x
115 x
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Can’t find what you are looking for? More sizes available on request. Click here to get in touch!

  • 6.604
  • 8.255
  • 10.21
  • 12.954
  • 16.256
  • 20.244
  • 22.479
  • 25.654
  • 28.829
  • 30.252
  • 32.256
  • 35.306
  • 36.245
  • 38.404
  • 40.309
  • 41.554
  • 45.313
  • 47.879
  • 51.104
  • 55.295
  • 57.505
  • 60.324
  • 63.881
  • 65
  • 65.354
  • 70.307
  • 75.361
  • 76.2
  • 76.4
  • 76.581
  • 76.962
  • 80
  • 80.467
  • 82.931
  • 85
  • 85.445
  • 88.9
  • 89.281
  • 89.916
  • 90
  • 90.449
  • 90.5
  • 91
  • 95.631
  • 96.24
  • 100.5
  • 100.7
  • 101.981
  • 102
  • 102.235
  • 105.5
  • 108.331
  • 111
  • 112
  • 116
  • 116.5
  • 121
  • 121.158
  • 122
  • 127.762
  • 128.016
  • 131
  • 131.5
  • 133.35
  • 136
  • 140
  • 141
  • 141.5
  • 146.05
  • 147
  • 151
  • 151.25
  • 152.4
  • 153.162
  • 153.5
  • 156.5
  • 160
  • 161
  • 161.5
  • 162
  • 165.1
  • 166.5
  • 171
  • 171.45
  • 172
  • 172.5
  • 176
  • 176.5
  • 177.8
  • 180.762
  • 181
  • 181.5
  • 182
  • 186
  • 186.5
  • 191
  • 192
  • 195
  • 196.5
  • 201
  • 204.216
  • 204.495
  • 205
  • 210
  • 210.762
  • 211
  • 220
  • 220.762
  • 221
  • 228.6
  • 232
  • 236
  • 241.3
  • 250
  • 254
  • 260
  • 266.7
  • 280
  • 304.8
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  • 25 h8
  • 25.4 h8
  • 30 h9
  • 31.75 h9
  • 35 h8
  • 35 h9
  • 38.1 h8
  • 38.1 h9
  • 44.45 h8
  • 44.45 h9
  • 45 h8
  • 45 h9
  • 50 h8
  • 50 h9
  • 50.8 h8
  • 50.8 h9
  • 55 h9
  • 57.15 h8
  • 57.15 h9
  • 59.994 h8
  • 60 h8
  • 60 h9
  • 63.5 h8
  • 63.5 h9
  • 69.85 h8
  • 70 h8
  • 70 h9
  • 75 h8
  • 75 h9
  • 76.2 h8
  • 76.2 h9
  • 80 h8
  • 90 h8
  • 95.25 h8
  • 100 h9
  • 101.6 h8
  • 110 h8
  • 114.3 h8
  • 115 h8
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Grade: F51 Duplex
Size(s)
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Overview
Properties
Applications

Supplied Condition (where applicable):

  • We supply F51 steel in the annealed condition to max hardness 271 HB
  • Specifications: EN 10088-3 / ASTM A182/276/479 / NACE MR-0175

 

F51 Duplex Chemical Composition (%):

C Cr Ni Mo
≤0,03 21,0-23,0 4,5-6,50 2,50-3,50
  • Good mechanical strength and ductility
  • Good corrosion resistance & high pitting resistance (PREN >34)
  • Good stress corrosion cracking resistance
  • Sub-zero temperature notch ductility is good
  • Good weldability & formability
  • 300 series alternative grade, where high strength, lower weight & resistance to stress corrosion cracking is required
  • Propeller shafts
  • Valves & pumps
  • Flanges
  • Bolting
  • Pressure vessel parts
  • Compressor parts
  • Heat exchangers
  • Refineries
  • Power generation
  • Chemical tanks

Supplied Condition (where applicable):

  • We supply F51 steel in the annealed condition to max hardness 271 HB
  • Specifications: EN 10088-3 / ASTM A182/276/479 / NACE MR-0175

 

F51 Duplex Chemical Composition (%):

C Cr Ni Mo
≤0,03 21,0-23,0 4,5-6,50 2,50-3,50

  • Good mechanical strength and ductility
  • Good corrosion resistance & high pitting resistance (PREN >34)
  • Good stress corrosion cracking resistance
  • Sub-zero temperature notch ductility is good
  • Good weldability & formability
  • 300 series alternative grade, where high strength, lower weight & resistance to stress corrosion cracking is required

  • Propeller shafts
  • Valves & pumps
  • Flanges
  • Bolting
  • Pressure vessel parts
  • Compressor parts
  • Heat exchangers
  • Refineries
  • Power generation
  • Chemical tanks

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