Hastelloy X (UNS N06002) is a nickel-chromium-iron-molybdenum alloy with exceptional high-temperature strength, oxidation resistance up to 2200°F, and excellent fabricability. It resists carburization and stress-corrosion cracking in aggressive environments, making it the preferred material for gas turbine components, industrial furnace parts, chemical retorts, and high-temperature piping systems.

Slip-On (SO) flanges per ASME B16.5 are economical and easy to install. The pipe slips into the flange bore and is fillet-welded inside and outside. These flanges suit moderate-pressure, non-critical services where full penetration welding is not required.
All dimensions below conform to ASME B16.5 for Class 150 and Class 300 raised-face slip-on flanges. Material is supplied to ASTM B564 UNS N06002.
ASME B16.5 Class 150 Hastelloy X Slip-On Flange Dimensions
|
NPS |
OD (O) |
Thickness (T) |
Raised Face (R) |
Length thru Hub (Y) |
Hub OD (X) |
Bore (B) |
Weight (lb) |
Bolt Circle (C) |
No. Holes |
Hole Dia |
|
1/2 |
3.50 |
0.44 |
1.38 |
0.63 |
1.19 |
0.88 |
1 |
2.38 |
4 |
0.63 |
|
3/4 |
3.88 |
0.50 |
1.69 |
0.63 |
1.50 |
1.09 |
2 |
2.75 |
4 |
0.63 |
|
1 |
4.25 |
0.56 |
2.00 |
0.69 |
1.94 |
1.36 |
2 |
3.13 |
4 |
0.63 |
|
1-1/4 |
4.63 |
0.63 |
2.50 |
0.81 |
2.31 |
1.70 |
3 |
3.50 |
4 |
0.63 |
|
1-1/2 |
5.00 |
0.69 |
2.88 |
0.88 |
2.56 |
1.95 |
3 |
3.88 |
4 |
0.63 |
|
2 |
6.00 |
0.75 |
3.63 |
1.00 |
3.06 |
2.44 |
5 |
4.75 |
4 |
0.75 |
|
2-1/2 |
7.00 |
0.88 |
4.13 |
1.13 |
3.56 |
2.94 |
7 |
5.50 |
4 |
0.75 |
|
3 |
7.50 |
0.94 |
5.00 |
1.19 |
4.25 |
3.57 |
8 |
6.00 |
4 |
0.75 |
|
3-1/2 |
8.50 |
0.94 |
5.50 |
1.25 |
4.81 |
4.07 |
11 |
7.00 |
8 |
0.75 |
|
4 |
9.00 |
0.94 |
6.19 |
1.31 |
5.31 |
4.57 |
13 |
7.50 |
8 |
0.75 |
|
5 |
10.00 |
0.94 |
7.31 |
1.44 |
6.44 |
5.66 |
15 |
8.50 |
8 |
0.88 |
|
6 |
11.00 |
1.00 |
8.50 |
1.56 |
7.56 |
6.72 |
19 |
9.50 |
8 |
0.88 |
|
8 |
13.50 |
1.13 |
10.63 |
1.75 |
9.69 |
8.72 |
30 |
11.75 |
8 |
0.88 |
|
10 |
16.00 |
1.19 |
12.75 |
1.94 |
12.00 |
10.88 |
43 |
14.25 |
12 |
1.00 |
|
12 |
19.00 |
1.25 |
15.00 |
2.19 |
14.38 |
12.88 |
64 |
17.00 |
12 |
1.00 |
|
14 |
21.00 |
1.38 |
16.25 |
2.25 |
15.75 |
14.14 |
90 |
18.75 |
12 |
1.13 |
|
16 |
23.50 |
1.44 |
18.50 |
2.50 |
18.00 |
16.16 |
98 |
21.25 |
16 |
1.13 |
|
18 |
25.00 |
1.56 |
21.00 |
2.69 |
19.88 |
18.18 |
130 |
22.75 |
16 |
1.25 |
|
20 |
27.50 |
1.69 |
23.00 |
2.88 |
22.00 |
20.20 |
165 |
25.00 |
20 |
1.25 |
|
24 |
32.00 |
1.88 |
27.25 |
3.25 |
26.13 |
24.25 |
220 |
29.50 |
20 |
1.38 |
ASME B16.5 Class 300 Hastelloy X Slip-On Flange Dimensions
|
NPS |
OD (O) |
Thickness (T) |
Raised Face (R) |
Length thru Hub (Y) |
Hub OD (X) |
Bore (B) |
Weight (lb) |
Bolt Circle (C) |
No. Holes |
Hole Dia |
|
1/2 |
3.75 |
0.56 |
1.38 |
0.88 |
1.50 |
0.88 |
2 |
2.63 |
4 |
0.63 |
|
3/4 |
4.63 |
0.63 |
1.69 |
1.00 |
1.88 |
1.09 |
3 |
3.25 |
4 |
0.75 |
|
1 |
4.88 |
0.69 |
2.00 |
1.06 |
2.13 |
1.36 |
3 |
3.50 |
4 |
0.75 |
|
1-1/4 |
5.25 |
0.75 |
2.50 |
1.06 |
2.50 |
1.70 |
4 |
3.88 |
4 |
0.75 |
|
1-1/2 |
6.13 |
0.81 |
2.88 |
1.19 |
2.75 |
1.95 |
6 |
4.50 |
4 |
0.88 |
|
2 |
6.50 |
0.88 |
3.63 |
1.31 |
3.31 |
2.44 |
7 |
5.00 |
8 |
0.75 |
|
2-1/2 |
7.50 |
1.00 |
4.13 |
1.50 |
3.94 |
2.94 |
10 |
5.88 |
8 |
0.88 |
|
3 |
8.25 |
1.13 |
5.00 |
1.69 |
4.63 |
3.57 |
13 |
6.63 |
8 |
0.88 |
|
3-1/2 |
9.00 |
1.19 |
5.50 |
1.75 |
5.25 |
4.07 |
17 |
7.25 |
8 |
0.88 |
|
4 |
10.00 |
1.25 |
6.19 |
1.88 |
5.75 |
4.57 |
22 |
7.88 |
8 |
0.88 |
|
5 |
11.00 |
1.38 |
7.31 |
2.00 |
7.00 |
5.66 |
28 |
9.25 |
8 |
0.88 |
|
6 |
12.50 |
1.44 |
8.50 |
2.06 |
8.13 |
6.72 |
39 |
10.63 |
12 |
0.88 |
|
8 |
15.00 |
1.63 |
10.63 |
2.44 |
10.25 |
8.72 |
58 |
13.00 |
12 |
1.00 |
|
10 |
17.50 |
1.88 |
12.75 |
2.62 |
12.63 |
10.88 |
81 |
15.25 |
16 |
1.13 |
|
12 |
20.50 |
2.00 |
15.00 |
2.88 |
14.75 |
12.88 |
115 |
17.75 |
16 |
1.25 |
|
14 |
23.00 |
2.13 |
16.25 |
3.00 |
16.75 |
14.14 |
165 |
20.25 |
20 |
1.25 |
|
16 |
25.50 |
2.25 |
18.50 |
3.25 |
19.00 |
16.16 |
190 |
22.50 |
20 |
1.38 |
|
18 |
28.00 |
2.38 |
21.00 |
3.50 |
21.00 |
18.18 |
250 |
24.75 |
24 |
1.38 |
|
20 |
30.50 |
2.50 |
23.00 |
3.75 |
23.13 |
20.20 |
315 |
27.00 |
24 |
1.38 |
|
24 |
36.00 |
2.75 |
27.25 |
4.19 |
27.63 |
24.25 |
475 |
32.00 |
24 |
1.63 |
Notes
All flanges supplied with 0.06 in (1.6 mm) raised face unless specified flat-face.
Weights are approximate for Hastelloy X (density 0.297 lb/in³).
Tolerances and marking per ASME B16.5.
Available in higher classes (600–2500) and other facing types on request.
Our factory produces these Hastelloy X slip-on flanges with full material traceability, ultrasonic testing, and PMI verification. We maintain large stock in common sizes and can deliver custom or large-diameter flanges quickly.
For quotations, technical support, or special requirements (e.g., RTJ facing, larger NPS, or matching Schedule pipe), contact our team today. We deliver reliable, high-performance nickel alloy solutions.
