ASTM B564 UNS N06601 Flange: A Comprehensive Overview
ASTM B564 UNS N06601 flanges (Inconel 601) are nickel-chromium alloy pipe fittings known for their excellent high-temperature oxidation/corrosion resistance, strength, and carburization resistance. They are widely used in furnace components, heat exchangers, and exhaust systems in the chemical, petrochemical, aerospace, and power industries. These flanges are available in various types, such as weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and socket weld flanges, and are used to seal pipelines in high-temperature environments.
What are the specifications of Inconel 601 material?
INCONEL alloy 601 is a nickel-based alloy containing a high percentage of chromium (approximately 25%) with added aluminum, specifically designed to resist high-temperature oxidizing environments encountered in metal and material heat treatment processes.
Inconel 601 flanges are made from an alloy material composed of nickel and chromium. The specific grade of the material varies depending on the proportion of its components. The 601 grade includes nickel, chromium, carbon, as well as manganese, silicon, sulfur, copper, and iron. Some common types include socket weld flanges, butt weld flanges, Inconel 601 slip-on flanges, orifice flanges, and others. Flanges made from this material possess high strength, are resistant to corrosion in the presence of acids, reducing agents, and oxidizing agents, and have higher hardness.
601 alloy flanges have a minimum tensile strength of 550 MPa, a minimum yield strength of 205 MPa, and an elongation of 30%. This material has a higher density than ordinary stainless steel and a melting point of 1411 degrees Celsius. These flanges conform to ASTM B564 standards and comply with international specifications such as ASME/ASTM/DIN, including ASME B16.5, B16.47, etc. Functional types include ASME SB564 Alloy 601 lap joint flanges, as well as slip-on flanges, butt weld flanges, socket weld flanges, orifice flanges, and various other types. Flange facing types include flat face, raised face, and ring type joint.
Inconel 601 flange manufacturers offer flanges in sizes ranging from ½ inch to 48 inches, with varying pressure ratings. Pipe flange alloys are available according to pressure ratings, including Class 150 to Class 2500. These flanges are also available with pressure ratings expressed as PN6 to PN64. Applications for 601 alloy butt weld flanges include chemical processing, power plants, and the oil and petrochemical industries.
Specification of UNS N06601 Forged Flange
Inconel 601 Blind Flange Size
15NB – 1200NB
PN 2.5 – PN 400
NPS: ½" 48 "
Features
Antioxidant properties
Good weldability
High temperature resistance
Non-magnetic
Advantages
Durability
Thermal fatigue resistance
Long-term performance
Ease of manufacturing
Available Packagings
Custom packaging
Labels and documentation
Protective coatings and packaging bags
Standard packaging for small flanges
Manufacturing Methods
Hot working
Forging
Welding and fabrication
Casting
Testing Requirements
Mechanical property testing
Dimensional inspection
Hydrostatic pressure testing
Fatigue testing
International Standard
ASME SB-166
ASTM B166
ASME B16.5
ASTM B564
Disadvantages
Manufacturing challenges
Limited supply
Environmental impact
Thermal expansion issues
Wall Thickness
SCH 60/ 80/ 100
SCH 160/ 180
SCH 10/ 20/ 40
SCH 120/ 140
Weight chart of Nickel alloy 601 Slip On Flanges
| Standard | Dia | Class | Dia of Bolt Hole | No. of Bolts | Bolt Circle Dia | Bolt Size |
|---|---|---|---|---|---|---|
| ISO 7005 (DIN) Flange | 95 | PN40 | 14 | 4 | 65 | M12 |
| 95 | PN10 | 14 | 4 | 65 | M12 | |
| 95 | PN25 | 14 | 4 | 65 | M12 | |
| 95 | PN16 | 14 | 4 | 65 | M12 | |
| 80 | PN6 | 11 | 4 | 55 | M10 | |
| 90 | PN20 | 16 | 4 | 60.5 | M14 | |
| ANSI B16.5 | 121 | ANSI 1500 | 22 | 4 | 83 | 19 |
| 95 | ANSI 300 | 16 | 4 | 67 | 13 | |
| 121 | ANSI 900 | 22 | 4 | 83 | 19 | |
| 89 | ANSI 150 | 16 | 4 | 60 | 13 | |
| 95 | ANSI 600 | 16 | 4 | 67 | ||
| AS 2129 Flange | 114 | Table H | 17 | 4 | 83 | 16 |
| 95 | Table D | 14 | 4 | 67 | 13 | |
| 95 | Table F | 14 | 4 | 67 | 13 | |
| 114 | Table J | 17 | 4 | 83 | 16 | |
| 95 | Table E | 14 | 4 | 67 | 13 | |
| 95 | Table C | 14 | 4 | 67 | 13 | |
| AS4087 | 95 | PN14 | 14 | 4 | 67 | M12 |
Astm B564 Uns N06601 Flanges Price
| Flange Schedule/Class | Price | Flange Material | Pipe Size - Pipe Flanges | Max. Pressure | Flange Connection Type |
|---|---|---|---|---|---|
| Class 150 | $67.8/ each | Forged Inconel Alloy 601 | 3/4" | 275 psi | Socket Weld |
| Class 300 | $121/ each | Forged Inconel 601 | 1/2" | 720 psi | FNPT |
| Class 150 | $49.8/ each | Inconel Alloy 601 | 3/4" | 150 psi | FNPT |
| Class 300 | $71.4/ each | Forged Inconel Alloy 601 | 1/2" | 720 psi | Slip On |
| Class 150 | $22.6/ each | Inconel Alloy 601 | 1/2" | 150 psi | Welded |
| Class 300 | $83.8/ each | Forged Inconel 601 | 1/2" | 720 psi | Slip On |
| Class 150 | $60.2/ each | Forged Inconel Alloy 601 | 1/2" | 275 psi | Socket Weld |
| Class 300 | $84.2/ each | Forged Inconel Alloy 601 | 3/4" | 720 psi | FNPT |
| Class 150 | $65/ each | Inconel 601 | 1/2" | 150 psi | FNPT |
| Class 300 | $110/ each | Forged Inconel 601 | 3/4" | 720 psi | FNPT |
| Class 150 | $49.8/ each | Inconel Alloy 601 | 1/2" | 150 psi | FNPT |
| Class 300 | $84.2/ each | Forged Inconel Alloy 601 | 1" | 720 psi | FNPT |
Pressure Rating Of SB 564 UNS N06601 Flanges
| Temp.., °C | Inconel Alloy 601 Working Pressures At Classes, bar | ||||||
|---|---|---|---|---|---|---|---|
| 300 | 900 | 150 | 2500 | 400 | 1500 | 600 | |
| 650 | 4.7 | 14.2 | - | 39.4 | 6.3 | 23.6 | 9.5 |
| -29 ~ 38 | 51.7 | 155.1 | 20.0 | 430.9 | 68.9 | 258.6 | 103.4 |
| 600 | 6.6 | 19.9 | - | 55.3 | 8.9 | 33.2 | 13.3 |
| 50 | 51.7 | 155.1 | 19.5 | 430.9 | 68.9 | 258.6 | 103.4 |
| 550 | 13.9 | 41.8 | - | 116.2 | 18.6 | 69.7 | 27.9 |
| 325 | 41.4 | 124.0 | 9.3 | 344.3 | 55.0 | 206.6 | 82.6 |
| 100 | 51.5 | 154.6 | 17.7 | 429.4 | 68.7 | 257.6 | 103.0 |
| 500 | 28.2 | 84.7 | 2.8 | 235.0 | 37.6 | 140.9 | 56.5 |
| 150 | 50.3 | 150.6 | 15.8 | 418.2 | 66.8 | 250.8 | 100.3 |
| 450 | 33.7 | 101.4 | 4.6 | 281.8 | 45.1 | 169.0 | 67.7 |
| 200 | 48.6 | 145.8 | 13.8 | 405.4 | 64.8 | 243.4 | 97.2 |
| 575 | 9.4 | 28.3 | - | 78.6 | 12.6 | 47.2 | 18.9 |
| 400 | 36.5 | 109.8 | 6.5 | 304.9 | 48.9 | 183.1 | 73.3 |
| 250 | 46.30 | 139.0 | 12.1 | 386.2 | 61.7 | 231.8 | 92.7 |
| 300 | 42.9 | 128.6 | 10.2 | 357.1 | 57.0 | 214.4 | 85.7 |
| 350 | 40.3 | 120.7 | 8.4 | 335.3 | 53.6 | 201.1 | 80.4 |
| 425 | 35.2 | 105.1 | 5.5 | 291.6 | 46.5 | 175.1 | 70.0 |
| 375 | 38.9 | 116.5 | 7.4 | 323.2 | 51.6 | 194.1 | 77.6 |
| 475 | 31.7 | 95.1 | 3.7 | 263.9 | 42.3 | 158.2 | 63.4 |
| 538 | 16.5 | 49.6 | 1.4 | 137.9 | 22.1 | 82.7 | 33.1 |
| 625 | 5.1 | 15.4 | - | 42.8 | 6.8 | 25.7 | 10.3 |
Size Chart Of Inconel Alloy 601 Flanges
| Nominal Pipe Size (NPS) | Thickness (inches) | Diameter of Flange (inches) | Number of Bolts | Bolt Circle Diameter (inches) | Bolt Size (inches) |
|---|---|---|---|---|---|
| 1/2" | 0.44 | 3.19 | 4 | 2.38 | 5/8 |
| 24" | 1.38 | 22.00 | 20 | 20.50 | 1-1/4" |
| 18" | 1.19 | 18.00 | 16 | 16.50 | 1-1/8" |
| 3/4" | 0.44 | 3.66 | 4 | 2.88 | 5/8 |
| 14" | 1.12 | 15.00 | 12 | 13.50 | 1-1/8" |
| 1" | 0.44 | 4.19 | 4 | 3.38 | 5/8 |
| 12" | 1.06 | 14.00 | 12 | 12.50 | 1-1/8" |
| 1 1/2" | 0.56 | 5.00 | 4 | 4.00 | 3/4 |
| 2" | 0.56 | 5.50 | 4 | 4.50 | 3/4 |
| 10" | 0.94 | 12.00 | 12 | 11.00 | 1" |
| 3" | 0.56 | 6.75 | 8 | 5.75 | 7/8 |
| 16" | 1.12 | 16.50 | 16 | 15.00 | 1-1/8" |
| 4" | 0.62 | 7.50 | 8 | 6.50 | 7/8 |
| 8" | 0.81 | 10.50 | 8 | 9.50 | 1" |
| 20" | 1.25 | 19.50 | 16 | 18.00 | 1-1/4" |
| 6" | 0.75 | 9.00 | 8 | 8.00 | 7/8 |
Inconel N06601 Lap Joint Flange Chemical Composition
| Element | Content (%) / Condition |
|---|---|
| Carbon (C) | ≤ 0.10 |
| Sulfur (S) | ≤ 0.015 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 0.50 |
| Iron (Fe) | 21.0 – 25.0 (max) |
| Nickel (Ni) | 58.0 – 63.0 |
Physical Properties of 601 Inconel WNRF Flanges
| Property | Value |
|---|---|
| Melting Point | 1400°C (2552°F) |
| Density | 8.47 g/cm³ |
| Poisson's Ratio | 0.29 |
| Elongation | 40% |
| Yield Strength | 310 MPa (45000 psi) |
ASTM B564 N06601 Lap Joint Flanges Mechanical Properties
Tensile Strength
600 MPa (87,000 psi)
Ultimate Tensile Strength (UTS)
1,050 MPa (152,000 psi)
Fatigue strength
345 MPa (50,000 psi) at 600°C
Hardness
80–90 HRB
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅ Over 18 years of export experience, products sold to more than 80 countries
✅ Certified by ISO, SGS, and BV
✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars
✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging
✅ Fast delivery within 7-15 days, supported by global logistics partners
📦 Packaging and Shipping
All stainless steel products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
About Gnee Steel
Gnee Steel is a professional manufacturer of nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy 800, Incoloy 800H/HT, Incoloy 825, Monel 400, Monel K500, and other high-temperature alloy materials. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power generation, automotive, nuclear energy, and other fields, and we can provide customized alloy material solutions according to customer needs. For inquiries about alloy material prices or customized alloy material solutions, please feel free to contact us via email at ss@gneemetal.com for a quote.
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