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ASTM B444 UNS N06625 Nickel Alloy 625 Seamless Tubing Supplier
At Eramets Steel Alloys, the Inconel 625 tube is widely recognized as one of the most reliable and high-performance materials used in the nuclear industry. Our premium quality Inconel 625 seamless tubes, Inconel 625 annealed tubes, and Alloy 625 tubing are extensively used in critical applications such as steam generators, reactor cores, control rod components, and nuclear waste reprocessing systems.
India's largest stock of UNS N06625 Tube according to international standards ASTM B751/ ASME SB751, ASTM B829/ ASME SB829, ASTM B775/ ASME SB775, ASTM B705/ ASME SB705, ASTM B704/ ASME SB704
The growing demand for UNS N06625 tubes in nuclear power plants is driven by their exceptional resistance to extreme environments. These nickel-based alloy 625 seamless tubes are engineered to withstand high temperatures, intense radiation, and aggressive corrosive conditions, making them an ideal choice for nuclear steam generator tubing and reactor systems.
In nuclear-powered steam generators, basic thermodynamic principles govern heat transfer and energy conversion. The materials used in these systems, including Inconel 625 tubing, must deliver outstanding thermal stability and structural integrity. Our Alloy 625 seamless tubes are specifically designed to perform under these demanding conditions, ensuring long-term durability and safety.
One of the key advantages of Inconel 625 pipes and tubes is their superior corrosion resistance. These tubes resist oxidation, pitting, and crevice corrosion even when exposed to high-pressure water and harsh chemical environments over extended periods. This makes Inconel 625 heat exchanger tubes highly suitable for long service life in nuclear applications.
Within the nuclear reactor core, where heat is continuously generated due to nuclear reactions, materials must maintain their mechanical strength under elevated temperatures. Inconel 625 seamless tubing excels in such environments due to its high tensile strength, excellent fatigue resistance, and remarkable toughness. Even under extreme thermal stress, the mechanical properties of Alloy 625 tubes remain stable and reliable.
Specification Chart of Inconel 625 Tube
|
Standard |
ASTM, AISI, GB, JIS, customers’ requests available |
|
Size |
Round Tube: OD: 16-119mm or customized |
|
Thickness |
0.25mm-3.0mm |
|
Length |
6m or according to customers’ request |
|
Sample |
Free sample is available, but freight should be paid by you |
|
Tolerance
|
Outer diameter: ±0.2mm |
|
Thickness: ±0.05mm |
|
|
Length: ±0.5mm |
|
|
Ends |
In plain end or bevelled ends or as your requirements |
|
Welding Line Type |
ERW (Electrical Resistance Weld) |
|
Finishing
|
A. Sanded |
|
B. Gloss #400,Mirror #600 – #1000 |
|
|
C. Brushed |
|
|
D. Wood Grain |
|
|
E. Embossed, Threaded |
|
|
Application |
Decorations, constructions, food industry, etc. |
|
Certification |
ISO, SGS |
|
Round Pipe Size |
16, 17, 18, 19, 20, 21, 22, 23, 25, 28, 31.8, 35, 36, 38.1, 48, 50.8, 60, 63.5, 76.2, 89, 101, 114 mm |
|
Square Pipe Size |
17, 18, 19, 20, 21, 22, 23, 24, 25, 28, 30, 36, 38, 50 mm |
|
Rectangle Pipe Size |
10*30, 10*40, 10*50, 20*10, 23*11, 24*12, 25*13, 28*25, 28*13, 29*14, 30*15, 30*20, 30*22, 34*22, 36*23, 50*25, 60*30, 75*45, 95*45 mm |
|
Thickness |
exact 0.25, 0.28, 0.32, 0.37, 0.41, 0.51, 0.61, 0.71, 0.91, 1.11, 1.15, 1.41 mm |
|
Length |
6m or according to customer’s request |
|
Outer diameter |
6.35-219mm |
|
Tolerance |
Outer diameter :±0.2mm |
|
Thickness :±0.02mm |
|
|
Length :±0.5mm |
|
|
Process method |
Code drawn, annealed with nitrogen protection, ultrasonic, automatic shape, polished |
|
Test |
Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
|
Equipment |
Press machine, Bending machine, Pushing Machine, electric bevelling machine Sand-blasting machine, etc |
|
Origin |
West Europe / Japanese / Indian / USA / Korean / American / European |
|
Test Certificates |
Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report |
Inconel 625 Tube Price
| Description | Price Per Unit (INR) | Price in USD |
|---|---|---|
| Inconel 625 Ss 06,35×0 , 71 Svt Dmd 436-45 – F62a0635071-088 (Tubes For Manufacturing Air Craft Parts) | 2,294 | 30.72 |
| Micro Gc Gas Analyzer Equipment Computer -pc&inconel 625 Reactor Tube (Cn15226007,czc5135sj9) | 29,732 | 398.17 |
| Inconel 625 Ss 06, 35×0, 71 Svt Dmd 436-45 (Tubes For Mfg Aircarft Parts) | 2,314 | 30.99 |
Alloy 625 Tubing Weight
|
NPS
|
Outside Diameter
|
Wall Thickness
|
Weight
|
Weight
|
|||
|
in
|
mm
|
in
|
mm
|
Sched
|
kg/Mtr
|
Lb/ft
|
|
|
1/2″
|
0.840
|
21
|
0.109
|
2.769
|
40 STD
|
1.268
|
0.851
|
|
0.147
|
3.734
|
80 STD
|
1.621
|
1.088
|
|||
|
3/4″
|
1.050
|
27
|
0.113
|
2.870
|
40 STD
|
1.684
|
1.131
|
|
0.154
|
3.912
|
80 STD
|
2.195
|
1.474
|
|||
|
1″
|
1.315
|
33
|
0.133
|
3.378
|
40 STD
|
2.501
|
1.679
|
|
0.179
|
4.547
|
80 STD
|
3.325
|
2.172
|
|||
|
1 1/4″
|
1.660
|
42
|
0.140
|
3.556
|
40 STD
|
3.385
|
2.273
|
|
0.191
|
4.851
|
80 STD
|
4.464
|
2.997
|
|||
|
1 1/2″
|
1.900
|
48
|
0.145
|
3.683
|
40 STD
|
4.048
|
2.718
|
|
0.200
|
5.080
|
80 STD
|
5.409
|
3.361
|
|||
|
2″
|
2.375
|
60
|
0.154
|
3.912
|
40 STD
|
5.441
|
3.653
|
|
0.218
|
5.537
|
80 STD
|
7.480
|
5.022
|
|||
|
2 1/2″
|
2.875
|
73
|
0.203
|
5.516
|
40 STD
|
8.629
|
5.793
|
|
0.276
|
7.010
|
80 STD
|
11.411
|
7.661
|
|||
|
3″
|
3.500
|
89
|
0.216
|
5.486
|
40 STD
|
11.284
|
7.576
|
|
0.300
|
7.620
|
80 STD
|
15.272
|
10.253
|
|||
|
4″
|
4.500
|
114
|
0.237
|
6.020
|
16.073
|
10.790
|
|
|
0.337
|
8.560
|
22.318
|
14.983
|
||||
|
6″
|
6.625
|
168
|
0.188
|
4.775
|
19.252
|
12.924
|
|
|
0.203
|
5.516
|
20.739
|
13.923
|
||||
|
0.219
|
5.563
|
22.318
|
14.983
|
||||
|
0.250
|
6.350
|
25.354
|
17.021
|
||||
|
0.280
|
7.112
|
40 STD
|
58.263
|
18.974
|
|||
|
0.312
|
7.925
|
31.334
|
21.036
|
||||
|
0.375
|
9.525
|
37.285
|
25.031
|
||||
|
0.432
|
10.973
|
80 XHY
|
42.561
|
28.573
|
|||
|
0.500
|
12.700
|
48.719
|
32.708
|
||||
|
8″
|
8.625
|
219
|
0.188
|
4.775
|
25.233
|
16.940
|
|
|
0.203
|
5.156
|
27.198
|
18.259
|
||||
|
0.219
|
5.563
|
29.286
|
19.661
|
||||
|
0.250
|
6.350
|
20
|
33.308
|
22.361
|
|||
|
0.277
|
7.036
|
30
|
36.786
|
24.696
|
|||
|
0.322
|
8.179
|
40
|
42.352
|
28.554
|
|||
|
0.375
|
9.525
|
49.216
|
33.041
|
||||
|
0.406
|
10.312
|
60
|
53.085
|
35.638
|
|||
|
0.500
|
12.700
|
80 XHY
|
64.627
|
43.388
|
|||
|
10″
|
10.750
|
273
|
0.188
|
4.775
|
31.588
|
21.207
|
|
|
0.219
|
5.563
|
36.689
|
24.631
|
||||
|
0.250
|
6.350
|
20
|
41.759
|
28.035
|
|||
|
0.307
|
7.798
|
30
|
51.002
|
34.240
|
|||
|
0.344
|
8.738
|
56.946
|
38.231
|
||||
|
0.365
|
9.271
|
40 STD
|
63.301
|
40.483
|
|||
|
0.438
|
11.125
|
71.852
|
48.238
|
||||
|
0.500
|
12.700
|
60 XHY
|
81.530
|
54.735
|
|||
|
0.594
|
15.088
|
80
|
95.969
|
64.429
|
|||
|
12″
|
12.750
|
324
|
0.188
|
4.775
|
37.570
|
25.222
|
|
|
0.219
|
5.563
|
43.657
|
29.309
|
||||
|
0.250
|
6.350
|
49.713
|
33.375
|
||||
|
0.281
|
7.137
|
55.739
|
37.420
|
||||
|
0.312
|
7.925
|
61.735
|
41.445
|
||||
|
0.375
|
9.525
|
73.824
|
49.562
|
||||
|
0.406
|
10.312
|
79.727
|
53.525
|
||||
|
0.500
|
12.700
|
97.438
|
65.415
|
||||
|
0.562
|
14.275
|
108.966
|
73.154
|
||||
|
14″
|
14.000
|
356
|
0.188
|
4.775
|
41.308
|
27.732
|
|
|
0.219
|
5.563
|
48.012
|
32.233
|
||||
|
0.250
|
6.350
|
20
|
54.685
|
36.713
|
|||
|
0.281
|
7.137
|
61.327
|
41.172
|
||||
|
0.312
|
7.925
|
67.939
|
45.611
|
||||
|
0.375
|
9.525
|
STD
|
81.281
|
54.568
|
|||
|
0.438
|
11.125
|
40
|
94.498
|
63.441
|
|||
|
0.500
|
12.700
|
XHY
|
107.381
|
72.090
|
|||
| 0.625 |
15.875
|
132.983
|
89.278
|
||||
|
16”
|
16.000
|
406
|
0.188
|
4.775
|
47.290
|
21.748
|
|
|
0.219
|
5.563
|
54.980
|
36.910
|
||||
|
0.250
|
6.350
|
10
|
62.639
|
42.053
|
|||
|
0.281
|
7.137
|
70.268
|
47.174
|
||||
|
0.312
|
7.925
|
20
|
77.866
|
52.275
|
|||
|
0.344
|
8.738
|
85.677
|
57.519
|
||||
|
0.375
|
9.525
|
30 STD |
93.213
|
62.578
|
|||
|
0.438
|
11.125
|
108.433
|
72.797
|
||||
|
0.500
|
12.700
|
40 XHY |
123.289
|
82.770
|
|||
|
18″
|
18.000
|
457
|
0.219
|
5.563
|
61.948
|
41.588
|
|
|
0.250
|
6.350
|
70.593
|
47.393
|
||||
|
0.281
|
7.137
|
79.208
|
53.176
|
||||
|
0.312
|
7.925
|
20
|
87.792
|
58.939
|
|||
|
0.375
|
9.525
|
STD
|
105.144
|
70.588
|
|||
|
0.438
|
11.125
|
30
|
122.369
|
82.152
|
|||
|
0.500
|
12.700
|
XHY
|
139.198
|
93.450
|
|||
|
0.562
|
14.275
|
40
|
155.904
|
104.666
|
|||
|
0.625
|
15.875
|
172.754
|
115.978
|
||||
|
20″
|
20.000
|
508
|
0.250
|
6.350
|
78.547
|
52.733
|
|
|
0.282
|
7.163
|
88.458
|
59.386
|
||||
|
0.312
|
7.925
|
97.719
|
65.604
|
||||
|
0.375
|
9.525
|
20 STD
|
117.075
|
78.598
|
|||
|
0.438
|
11.125
|
136.305
|
91.508
|
||||
|
0.500
|
12.700
|
30 XHY
|
155.106
|
104.130
|
|||
|
0.594
|
15.088
|
40
|
183.378
|
123.110
|
|||
|
0.625
|
15.875
|
192.640
|
129.328
|
||||
|
0.688
|
17.475
|
211.368
|
141.901
|
||||
|
24″
|
24.000
|
610
|
0.250
|
6.350
|
94.456
|
63.413
|
|
|
0.281
|
7.137
|
106.029
|
71.183
|
||||
|
0.312
|
7.925
|
117.573
|
18.932
|
||||
|
0.375
|
9.525
|
20 STD
|
140.938
|
64.618
|
|||
|
0.438
|
11.125
|
164.176
|
110.219
|
||||
|
0.500
|
12.700
|
XHY
|
186.923
|
125.490
|
|||
|
0.625
|
15.875
|
232.410
|
156.028
|
||||
|
0.688
|
17.475
|
40
|
255.148
|
171.293
|
|||
|
0.750
|
19.050
|
277.401
|
186.233
|
||||
|
30″
|
30.000
|
762
|
0.250
|
6.350
|
118.318
|
79.433
|
|
|
0.281
|
7.137
|
132.851
|
89.189
|
||||
|
0.312
|
7.925
|
10
|
147.353
|
98.925
|
|||
|
0.375
|
9.525
|
STD
|
176.731
|
118.648
|
|||
|
0.438
|
11.125
|
205.983
|
138.286
|
||||
|
0.500
|
12.700
|
20 XHY
|
234.647
|
157.530
|
|||
|
0.625
|
15.875
|
30
|
292.066
|
196.078
|
|||
|
0.688
|
17.475
|
320.817
|
215.380
|
||||
|
0.750
|
19.050
|
348.988
|
234.293
|
||||
|
36″
|
36.000
|
914
|
0.250
|
6.350
|
142.180
|
95.453
|
|
|
0.281
|
7.137
|
159.672
|
107.196
|
||||
|
0.312
|
7.925
|
10
|
177.133
|
118.918
|
|||
|
0.375
|
9.525
|
STD
|
215.525
|
142.678
|
|||
|
0.438
|
11.125
|
247.790
|
166.353
|
||||
|
0.500
|
12.700
|
20 XHY
|
282.372
|
198.570
|
|||
|
0.625
|
15.875
|
351.723
|
236.128
|
||||
|
0.688 |
17.475
|
386.487
|
259.467
|
||||
|
0.750 |
19.050
|
420.576
|
282.353
|
||||
|
42″
|
42.000
|
1067
|
0.312
|
7.925
|
206.914
|
138.911
|
|
|
0.375
|
9.525
|
STD
|
248.319
|
166.708
|
|||
|
0.500
|
12.700
|
XHY
|
33.097
|
221.610
|
|||
|
0.750
|
19.050
|
492.163
|
330.413
|
||||
|
48″
|
48.000
|
1219
|
0.375
|
9.525
|
STD
|
284.112
|
190.738
|
|
0.438
|
11.125
|
331.404
|
222.487
|
||||
|
0.500
|
12.700
|
XHY
|
377.822
|
253.650
|
|||
|
0.750
|
19.050
|
563.750
|
378.473
|
||||
|
0.875
|
22.225
|
655.969
|
440.383
|
||||
Pressure Rating of Inconel UNS N06625 Tube Tube
| Tube O.D. (in.) |
Wall Thickness of Tube (inches) | |||||||
|---|---|---|---|---|---|---|---|---|
| .028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 | |
| Working Pressure (psig) | ||||||||
| 1/8 | 7900 | 10100 | ||||||
| 1/4 | 3700 | 4800 | 7000 | 9500 | ||||
| 5/16 | 3700 | 5400 | 7300 | |||||
| 3/8 | 3100 | 4400 | 6100 | |||||
| 1/2 | 2300 | 3200 | 4400 | |||||
| 3/4 | 2200 | 3000 | 4000 | 4600 | ||||
| 1 | 2200 | 2900 | 3400 | 3900 | 4300 | |||
WNR 2.4856 Tubing Chemical Composition
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr |
| Inconel 625 | 0.10max | 0.50 max | 0.50 max | 0.015max | – | 5.0 max | 58.0 min | 20.0 – 23.0 |
625 Inconel Tube mechanical properties
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Inconel 625 | 8.4 g/cm3 | 1350 °C (2460 °F) | Psi – 1,35,000 , MPa – 930 | Psi – 75,000 , MPa – 517 | 42.5 % |
Equivalent Grade of ASTM B516 Inconel 625 Tube
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| Inconel 625 | 2.4856 | N06625 | NCF 625 | NA 21 | ХН75МБТЮ | NC22DNB4M | NiCr22Mo9Nb |
Available Stock of Alloy 625 Tubing
| UNS N06625 Decorative Tubes | 625 Inconel Alloy Round Tubes |
| inconel 625 Instrumentation Tube | GOST ХН75МБТЮ Round Tubes |
| Alloy 625 Decorative Tube | inconel 625 Round Tube |
| ASME SB705 625 Inconel Decorative Tubes | UNS N06625 Polish Tubes |
| Alloy 625 Heat Exchager Tube | ASME SB705 625 Inconel Polish Tubes |
| 625 Inconel Instrumentation Tubes | UNS N06625 Round Tubes |
| GOST ХН75МБТЮ Instrumentation Tubes | 625 Inconel Polish Tubes |
| 625 Inconel Alloy thermocouple Tube | ASME SB705 625 Inconel Polish Tube |
| ASTM B705 625 Inconel Capillary Tube | inconel 625 EFW Tube |
| inconel 625 Colour Coated Tube | inconel 625 Welded Tube |
| Alloy 625 Secondary & Surplus Tube | WERKSTOFF NR. 2.4856 Outside Polished Tube |
| UNS N06625 U Shaped Tube | 625 Alloy exhaust tubing |
| Inconel Alloy 625 Boiler Tube | ASME SB444 625 Inconel Cold Drawn Tube |
| 625 Inconel Alloy Welded Tube | Inconel Alloy 625 redrawn tubing |
| inconel 625 Condensers Tube | WERKSTOFF NR. 2.4856 Super Heaters |
| Alloy 625 Chemical Process Tube | Alloy 625 Welded coiled tubing |
