Incoloy 800 Flanges Exporter In India
Comprehensive Technical Export Guide to UNS N08800 / W.Nr. 1.4876 Incoloy 800 Weld Neck, Slip On, Blind, Socket Weld, Threaded & Spectacle Flanges Manufactured by Arrow Piping India
Complete Metallurgical & Export Specification Guide for Incoloy 800 Flanges (UNS N08800 Weld Neck, Slip On, Blind & Threaded Flanges) Exported Worldwide by Arrow Piping
Sourcing high-performance, precision-forged high-temperature flange piping components requires partnering with a certified and experienced Incoloy 800 Flanges Exporter In India. In severe industrial process environments—ranging from petrochemical reformer furnaces to industrial heat treating and power generation facilities—standard stainless steel flanges such as 304L or 316L often suffer oxidation, thermal scaling, or stress corrosion cracking under elevated thermal cycles. Incoloy 800 (UNS N08800 / W.Nr. 1.4876 / ASTM B564) offers exceptional resistance to high-temperature oxidation, carburization, and nitriding, alongside high mechanical strength and thermal stability up to 1100°F (593°C).
As a leading manufacturer, stockist, and Incoloy 800 Flanges Exporter In India, Arrow Piping specializes in supplying high-precision metric and imperial flanges engineered to handle severe thermal and mechanical stresses. Operating from Mumbai, Maharashtra, we manufacture and export complete flanged joint solutions—including Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint, Spectacle Blinds, and custom CNC-machined forged components—to EPC contractors, stockists, and industrial clients across the GCC, Europe, Americas, and Asia-Pacific regions.
1. What Are Incoloy 800 Flanges & Why Are They Essential?
Incoloy 800 Flanges are heavy-duty piping connection components forged or machined from commercially pure Incoloy Alloy 800 round bars or forgings. Engineered with a balanced Nickel-Iron-Chromium matrix, Incoloy 800 provides remarkable resistance to aqueous corrosion as well as elevated-temperature oxidation and carburization environments.
The alloy contains 30–35% Nickel, 19–23% Chromium, and a minimum of 39.5% Iron, with additions of Aluminum and Titanium. The high nickel content maintains an austenitic structure while providing high resistance to chloride-induced stress corrosion cracking (SCC). The chromium content provides oxidation and scaling resistance. When specified as Incoloy Alloy 800 Flanges, these components retain structural integrity during prolonged thermal exposure, allowing piping engineers to build safe, leak-proof pressure joints in high-heat industrial processing units.
2. International Manufacturing Specifications & Equivalent Standards
When procuring from an Incoloy 800 Flanges Exporter In India, cross-verifying material specifications ensures complete alignment with project requirements, pressure vessel codes, and international engineering standards:
| Specification Standard | Applicable Product Category & Details |
|---|---|
| ASTM B564 / ASME SB564 | Nickel Alloy Forged Flanges (Weld Neck, Slip On, Blind, Socket Weld, Threaded) |
| ASTM B408 / ASME SB408 | Nickel-Iron-Chromium Alloy Rod and Bar for Flange Machining |
| ASME B16.5 | Pipe Flanges and Flanged Fittings (NPS 1/2 through NPS 24) |
| ASME B16.47 (Series A & B) | Large Diameter Steel Flanges (NPS 26 through NPS 60) |
| UNS Designation | UNS N08800 |
| Werkstoff Designation | W.Nr. 1.4876 |
| EN / DIN Standards | EN 1092-1 Type 01/11/02/05/12, DIN 2527, DIN 2633, DIN 2635 |
| NACE Compliance | NACE MR0175 / ISO 15156 & NACE MR0103 (Sour Gas Process Facilities) |
3. Chemical Composition Breakdown of Incoloy 800 (UNS N08800)
The outstanding heat and corrosion resistance of Incoloy 800 flanges are governed by its precise chemical formulation:
| Chemical Element | Minimum (%) | Maximum (%) | Metallurgical Role & Engineering Benefit |
|---|---|---|---|
| Nickel (Ni) | 30.00% | 35.00% | Stabilizes the austenitic structure and resists chloride stress corrosion cracking (SCC). |
| Chromium (Cr) | 19.00% | 23.00% | Provides excellent resistance to high-temperature oxidation, carburization, and sulfur compounds. |
| Iron (Fe) | 39.50% Min | Balance | Forms the structural base matrix, providing strength and economic balance. |
| Carbon (C) | — | 0.10% | Maintains high-temperature mechanical strength and structural integrity. |
| Aluminum (Al) | 0.15% | 0.60% | Combines with Titanium to form gamma-prime strengthening phases at high temperatures. |
| Titanium (Ti) | 0.15% | 0.60% | Stabilizes carbon to prevent sensitization during elevated temperature exposures. |
| Copper (Cu) | — | 0.75% | Enhances resistance to reducing acids and industrial environments. |
| Manganese (Mn) | — | 1.50% | Improves hot workability and acts as a deoxidizer during forging. |
| Silicon (Si) | — | 1.00% | Provides resistance to high-temperature scaling and oxidation. |
| Sulfur (S) | — | 0.015% | Kept low to maintain hot ductility and optimal weldability during pipe integration. |
4. Mechanical & Physical Property Profile
Engineers specifying flanges for elevated temperature pressure piping and chemical plant reactors must verify tensile and thermal limit parameters. As a trusted Incoloy 800 Flanges Exporter In India, Arrow Piping guarantees all exported products meet or exceed the following standards:
| Mechanical / Physical Property | Metric Units (SI) | Imperial Units |
|---|---|---|
| Ultimate Tensile Strength (UTS) | 520 MPa (Min) | 75 ksi (Min) |
| 0.2% Proof Yield Strength | 205 MPa (Min) | 30 ksi (Min) |
| Elongation at Break (A5) | 30% (Min) | 30% (Min) |
| Hardness (Brinell / Rockwell B) | 192 HB Max / 90 HRB Max | 192 HB Max / 90 HRB Max |
| Density | 7.94 g/cm³ | 0.287 lb/in³ |
| Melting Range | 1357 – 1385 °C | 2475 – 2525 °F |
| Modulus of Elasticity (20°C) | 196 GPa | 28.5 x 10⁶ psi |
| Thermal Conductivity (at 100°C) | 12.3 W/m·K | 85.3 BTU-in/hr-ft²-°F |
| Specific Heat Capacity | 460 J/kg·K | 0.11 BTU/lb·°F |
| Electrical Resistivity | 0.99 µΩ·m | 595 ohm·circ mil/ft |
5. Deep-Dive Comparison: Incoloy 800 vs. Incoloy 800H vs. Incoloy 800HT
Selecting the correct variant within the Alloy 800 family prevents premature high-temperature creep failure in process piping. Here is a metallurgical comparison:
1. Incoloy 800 (UNS N08800 / 1.4876):
Designed for general high-temperature service up to 1100°F (593°C). Provides excellent resistance to oxidation, carburization, and aqueous corrosion. Ideal for industrial piping, heat exchangers, and chemical processing equipment operating under general thermal conditions.
2. Incoloy 800H (UNS N08100 / 1.4958):
Features controlled carbon content (0.05% to 0.10%) and coarse grain size (ASTM 5 or coarser). This thermal processing gives 800H higher creep and stress-rupture properties above 1100°F (593°C) up to 1800°F (982°C).
3. Incoloy 800HT (UNS N08811 / 1.4959):
Further optimized with controlled combined levels of Aluminum and Titanium (0.85% to 1.20%), alongside controlled carbon and grain size. Offers maximum creep-rupture strength for severe high-temperature application lines in petrochemical crackers and steam reforming systems.
6. Complete Range of Incoloy 800 Flanges Exported by Arrow Piping
As a full-spectrum Incoloy 800 Flanges Exporter In India, we manufacture and export an extensive catalog of standard, non-standard, and custom forged flanges per ANSI, ASME, DIN, EN, and BS standards:
| Flange Type | Available Pressure Classes & Sizes | Engineering Application & Features |
|---|---|---|
| Incoloy 800 Weld Neck Flanges (WNF) | 150# to 2500#, Sch 10S to Sch XXS, 1/2" to 24" (Up to 60" B16.47) | Tapered hub welded directly to pipe. Ideal for severe conditions, high pressure, fluctuating thermal loads, and critical lines. |
| Incoloy 800 Slip On Flanges (SOF) | 150# to 1500#, 1/2" to 24" | Slips over pipe and fillet welded inside and outside. Easy alignment, lower initial material cost for moderate pressure applications. |
| Incoloy 800 Blind Flanges (BLRF) | 150# to 2500#, 1/2" to 24" | Used to seal high-pressure piping headers, pressure vessels, and heat exchanger nozzles for maintenance access. |
| Incoloy 800 Socket Weld Flanges (SWF) | 150# to 1500#, 1/2" to 4" | Features socket recess for smooth bore flow. Preferred for small-diameter high-pressure process lines. |
| Incoloy 800 Threaded Flanges (TH) | 150# to 2500#, 1/2" to 4" (NPT / BSPT / BSPP) | Threaded inner bore for joining systems where welding is hazardous or impractical. |
| Incoloy 800 Spectacle & Ring Joint Flanges (RTJ) | 300# to 2500#, 1/2" to 24" | Precision-machined ring groove for high-pressure metallic gasket seals and line isolation assemblies. |
7. Pressure-Temperature Ratings for ASME B16.5 Incoloy 800 Flanges
Understanding pressure ratings at elevated operating temperatures is essential for piping design. Below is a reference guide for ASTM B564 UNS N08800 flanges:
| Operating Temperature (°C / °F) | Class 150 (bar / psi) | Class 300 (bar / psi) | Class 600 (bar / psi) | Class 900 (bar / psi) | Class 1500 (bar / psi) |
|---|---|---|---|---|---|
| -29 to 38°C (-20 to 100°F) | 20.0 bar / 290 psi | 51.7 bar / 750 psi | 103.4 bar / 1500 psi | 155.1 bar / 2250 psi | 258.6 bar / 3750 psi |
| 200°C (392°F) | 17.8 bar / 260 psi | 46.2 bar / 670 psi | 92.4 bar / 1340 psi | 138.6 bar / 2010 psi | 231.0 bar / 3350 psi |
| 400°C (752°F) | 13.8 bar / 200 psi | 38.6 bar / 560 psi | 77.2 bar / 1120 psi | 115.8 bar / 1680 psi | 193.0 bar / 2800 psi |
| 500°C (932°F) | 8.0 bar / 116 psi | 35.0 bar / 508 psi | 70.0 bar / 1015 psi | 105.0 bar / 1523 psi | 175.0 bar / 2538 psi |
| 593°C (1100°F) | 1.4 bar / 20 psi | 14.0 bar / 203 psi | 28.0 bar / 406 psi | 42.0 bar / 609 psi | 70.0 bar / 1015 psi |
*Design Note: For temperatures exceeding 1100°F (593°C), engineers should evaluate Incoloy 800H or Incoloy 800HT grades for enhanced creep-rupture properties.
8. Critical Industrial Applications Worldwide
As a leading Incoloy 800 Flanges Exporter In India, Arrow Piping supplies UNS N08800 flanges across major high-temperature and corrosive process industries:
a) Chemical & Petrochemical Processing
Incoloy 800 weld neck and blind flanges are used in nitric acid production equipment, organic and inorganic acid process lines, ammonium nitrate neutralizers, and heat exchanger piping manifolds where resistance to nitric acid oxidation is mandatory.
b) Heat Treating & Furnace Equipment
In industrial heat treating furnaces, radiant tubes, muffles, retorts, and associated piping systems require materials that resist oxidation and carburizing atmospheres. Incoloy 800 flanges maintain joint integrity without scaling or embrittlement.
c) Power Generation & Nuclear Engineering
In fossil fuel and nuclear power plants, Incoloy 800 flanges are widely specified in superheater and reheater tubing connections, steam generators, and high-temperature cooling headers due to their excellent creep strength and water corrosion resistance.
d) Ethylene & Methane Reforming Units
Piping connections handling hot gases, hydrocarbon cracking, and steam-methane reforming operate under harsh thermal regimes. Incoloy 800 flanged connections provide dependable pressure boundary seal performance over years of continuous operation.
9. Comprehensive Quality Assurance, Testing & Export Traceability
At Arrow Piping, quality control forms the core of our manufacturing and export operations. Every export order of Incoloy 800 forged flanges undergoes systematic QA/QC inspection before packaging.
Our Rigorous QA/QC Testing Protocol Includes:
- PMI Testing (Positive Material Identification): 100% XRF spectro-analysis on all flange lots to verify Ni (30-35%), Cr (19-23%), and Fe chemistry.
- Ultrasonic Testing (UT): 100% volumetric UT testing on forged blanks per ASTM A388 to detect internal voids, forging cracks, or inclusions.
- Dimensional & Facing Verification: Precision measurement of hub length, wall thickness, bolt circle diameter, and flange facing serrations (125-250 AARH).
- Microstructural Analysis: Grain size and phase stability inspection to confirm solution annealed material condition.
- Hydrostatic Testing: Pressure integrity testing on finished flange assemblies when specified.
- Mechanical Testing: Tensile, yield, and hardness verification per ASTM B564 standards.
- Mill Test Certification: EN 10204 3.1 compliance with full heat number traceability and optional third-party witness inspection (TUV, DNV, SGS, BV, Lloyds).
10. Weight Estimation & Shipping Weight Formula for Incoloy 800 Flanges
To assist procurement managers and freight planners in calculating shipping weights, use the mathematical estimation model below for Incoloy 800 forged flanges:
Approximate Weight Estimation Model (Weld Neck Flange):
Weight (kg) = [ (OD² - ID²) × Thickness × Density ] / 1273000 + Hub Factor Mass
Where:
- OD = Outside Diameter of Flange in mm
- ID = Inside Nominal Bore Diameter in mm
- Thickness = Flange Flange Edge Thickness in mm
- Density = 7.94 g/cm³ (0.00000794 kg/mm³)
Engineering Note: Actual weight varies based on raised face (RF) height, weld neck hub taper geometry, and bolt hole drilling configurations.
11. Factors Influencing Incoloy 800 Flanges Price & Export Costs
When requesting quotes from an Incoloy 800 Flanges Exporter In India, key commercial and technical parameters affect final unit pricing:
- Raw Nickel Market Fluctuation: Alloy pricing correlates directly with LME (London Metal Exchange) Nickel and Chromium raw ingot rates.
- Flange Pressure Class & Size: Higher rating classes (Class 600 to 2500#) require thicker forging blanks and specialized machining time.
- Manufacturing Method: Seamless forged flanges vs. plate-machined ring flanges (per client spec).
- Inspection & Testing Requirements: Special third-party inspection (TUV, Lloyds, Bureau Veritas) or non-destructive UT/LPE testing.
- Export Protective Packaging: ISPM-15 compliant seaworthy wooden cases with moisture barrier packaging.
Why Choose Arrow Piping as Your Incoloy 800 Flanges Exporter In India?
Partnering with Arrow Piping as your chosen Incoloy 800 Flanges Exporter In India provides significant engineering and operational advantages:
- Ready Stock Inventory: Large stock of ASTM B564 UNS N08800 Weld Neck, Slip On, and Blind flanges in standard Class 150, 300, and 600 ratings for quick turnaround.
- In-House Precision CNC Machining: Modern machining facility equipped to execute custom facing, RTJ grooves, special bores, and non-standard geometries within tight schedules.
- Complete Export Documentation Support: EN 10204 3.1 MTC, Certificate of Origin (COO), Chamber of Commerce certification, Bill of Lading, and custom shipping documents.
- Seaworthy Export Packaging: Flange end caps, raised face rust-preventive coating, VCI wrapping, and heavy-duty ISPM-15 wooden boxes for international sea transit.
Looking for a certified Incoloy 800 Flanges Exporter In India? Request an Immediate Export Quote from Arrow Piping today. Send your detailed bill of materials and technical specifications to our export team for factory pricing and fast global shipment.
12. Global Export Destinations & Supply Network
Arrow Piping exports Incoloy 800 high-temperature flanges from Mumbai, India, to major industrial centers around the world:
- Middle East & GCC Countries: United Arab Emirates (Dubai, Abu Dhabi), Saudi Arabia (Jubail, Yanbu), Qatar (Doha), Kuwait, Oman (Muscat), Bahrain.
- Europe: United Kingdom, Germany, Netherlands (Rotterdam), Italy, Norway, France, Spain.
- Americas: United States (Houston, Chicago), Canada, Brazil, Mexico, Chile.
- Asia-Pacific & Africa: Singapore, Malaysia, Australia (Perth), South Africa, Nigeria, Vietnam, Indonesia.
Conclusion
Selecting a verified, reliable Incoloy 800 Flanges Exporter In India like Arrow Piping ensures metallurgical integrity, precise dimensional compliance, and dependable high-temperature performance for your critical projects. With high oxidation resistance, robust mechanical strength, and full international material certification, Incoloy 800 forged flanges from Arrow Piping offer complete operational safety.
Contact our export engineering sales team today at inquiry@arrowpiping.co.in or explore our complete flange product line on our Flanges Product Page.