Incoloy 825 Header Plug (UNS N08825) is a high-performance nickel-iron-chromium sealing material that is designed to seal openings of header and manifold systems under extreme corrosion, and high-temperature conditions. Additions of molybdenum, copper and titanium produced Inconel825 Header Plugs provide high resistance to oxidising and reducing acids, stress corrosion cracking as well as pitting, therefore they are the preferred choice in chemical processing, oil and gas, marine and power generation industries. Jade Alloys is a reliable producer and distributor of Indian Incoloy 825 Header Plugs which are precision engineered and fully traceable of their materials and delivered on time.
Quick Section Links
- Incoloy 825 Header Plug Chemical Composition (UNS N08825)
- Incoloy 825 Header Plug Physical Properties
- Mechanical Properties of Incoloy 825 Header Plugs
- Incoloy 825 Equivalent Grades — UNS N08825 Cross-Reference
- Types of Incoloy 825 Header Plugs
- Incoloy 825 (DIN 2.4858 / ASME B16.11) Header Plug Size & Dimension Chart
- ASME B16.11 Incoloy 825 Header Plugs Tolerance Chart
- Application and Industrial Use of Incoloy 825 Header Plugs
- Frequently Asked Questions (FAQ)
Incoloy 825 Header Plug Chemical Composition (UNS N08825)
| Element | Symbol | Min (%) | Max (%) |
|---|---|---|---|
| Nickel | Ni | 38.0% | 46.0% |
| Chromium | Cr | 19.5% | 23.5% |
| Iron | Fe | 22.0% | — |
| Molybdenum | Mo | 2.5% | 3.5% |
| Copper | Cu | 1.5% | 3.0% |
| Manganese | Mn | — | 1.0% |
| Silicon | Si | — | 0.5% |
| Titanium | Ti | 0.6% | 1.2% |
| Aluminum | Al | — | 0.2% |
| Carbon | C | — | 0.05% |
| Sulfur | S | — | 0.03% |
Incoloy 825 Header Plug Physical Properties
| Property | Value |
|---|---|
| Density | 8.14 g/cm³ |
| Melting Point | 1370 – 1400 °C |
| Specific Heat Capacity | 440 J/kg·K |
| Thermal Conductivity | 11.1 W/m·K |
| Electrical Resistivity | 1.13 µΩ·m |
| Coefficient of Thermal Expansion | 14.0 µm/m·°C (20–100°C) |
| Modulus of Elasticity | 196 GPa |
| Magnetic Permeability | ~1.005 |
Mechanical Properties of Incoloy 825 Header Plugs
| Property | Value |
|---|---|
| Tensile Strength | ≥ 586 MPa |
| Yield Strength (0.2% Offset) | ≥ 241 MPa |
| Elongation | ≥ 30% |
| Hardness (Brinell) | ≤ 200 HB |
| Hardness (Rockwell B) | ≤ 95 HRB |
| Reduction in Area | ≥ 50% |
| Impact Strength (Charpy) | ≥ 100 J |
Incoloy 825 Equivalent Grades — UNS N08825 Cross-Reference
| Trade Name | UNS Number | ASTM Specifications | ASME Specifications | DIN / EN | BS / ISO | Werkstoff Nr. |
|---|---|---|---|---|---|---|
| Incoloy 825 | N08825 | B425, B163, B423, B704, B705 | SB-423, SB-163, SB-425 | 2.4858 (NiCr21Mo) | NA 16 / NW 8825 | 2.4858 |
Types of Incoloy 825 Header Plugs
SS 304 Threaded Header Plugs
SS 304 Blind Header Plugs
SS 304 Socket Weld Header Plugs
SS 304L Header Plugs
SS 304H Header Plugs
Incoloy 825 (DIN 2.4858 / ASME B16.11) Header Plug Size & Dimension Chart
| Nominal Size (in) | OD (mm) | Length (mm) | Wall Thickness (mm) | Hex Width (mm) | Weight (kg/pc) |
|---|---|---|---|---|---|
| 1/8″ | 9.7 | 18 | 1.73 | 11 | 0.005 |
| 1/4″ | 13.2 | 22 | 2.24 | 14 | 0.012 |
| 3/8″ | 17.1 | 24 | 2.31 | 17 | 0.022 |
| 1/2″ | 21.3 | 28 | 2.77 | 22 | 0.045 |
| 3/4″ | 26.7 | 32 | 2.87 | 27 | 0.090 |
| 1″ | 33.4 | 38 | 3.38 | 36 | 0.180 |
| 1-1/4″ | 42.2 | 44 | 3.56 | 46 | 0.320 |
| 1-1/2″ | 48.3 | 48 | 3.68 | 52 | 0.480 |
| 2″ | 60.3 | 57 | 3.91 | 65 | 0.850 |
| 2-1/2″ | 73.0 | 63 | 5.16 | 75 | 1.350 |
| 3″ | 88.9 | 70 | 5.49 | 90 | 2.200 |
| 4″ | 114.3 | 82 | 6.02 | 115 | 4.500 |
ASME B16.11 Incoloy 825 Header PlugsTolerance Chart
| Parameter | Tolerance | Applicable Standard |
|---|---|---|
| Outside Diameter (OD) | ± 0.5 mm (≤\le 2″≤) | ± 0.8 mm (> 2) | ASME B16.11 |
| Overall Length | ± 1.5 mm | MSS SP-79 |
| Wall Thickness | +20% / −12.5% | ASME B36.10M |
| Hex / Square Width | ± 0.3 mm (≤1″) | ± 0.5 mm ($> 1) | ASME B18.2.1 |
| Thread Engagement Length | ± 1.0 mm | ASME B1.20.1 |
| Thread Pitch Diameter | ± 1 turn (Hand Tight) | ASME B1.20.1 |
| Thread Taper (NPT) | 1 in 16 (3/4″ per foot) | ASME B1.20.1 |
| Straightness | ≤1.5 mm/m | ASTM B425 |
| Weight per Piece | ± 10% | ASTM B425 / MSS SP-79 |
| Weight per Lot / Batch | ± 7.5% | ASTM B425 |
Application and Industrial Use of Incoloy 825 Header Plugs
- Pipeline Engineering
- Marine Industry
- Chemical Industry
- Oil & Gas Industry
- Mechanical Engineering
- Plant Engineering
- Plant Engineering
- Petrochemical Industry
- Power Industry
- Aerospace
- Food Processing Industry
Frequently Asked Questions (FAQ)
A high-performance plug used to seal headers and manifolds, made from Inconel 825 alloy for excellent corrosion and heat resistance.
Inconel 825 offers better resistance to acids and corrosion, while Inconel 625 has higher strength and better performance at very high temperatures.
They are used in chemical processing, oil & gas, marine, and power plants for leak-proof sealing in corrosive environments.
The price depends on size, specifications, and quantity, but it is generally higher due to its alloy composition and performance.
Jade Alloys is one of the most trusted manufacturers and suppliers in India, offering not only Incoloy 825 Header Plugs but also a wide range of other materials such as stainless steel, Inconel 625, Hastelloy, and alloy steel products with consistent quality and reliable supply
