Section 1: Product Overview
Inconel pipe fittings are high-performance nickel-chromium alloy fittings designed for extreme environments where superior corrosion resistance and high-temperature strength are required. Our Inconel fittings meet ASTM B366, ASTM B564, and ASME B16.9 standards, making them the preferred choice for aerospace, chemical processing, marine, and power generation industries.
As a leading Inconel fitting manufacturer, we provide Inconel 625, 718, 600, and 601 grades in various fitting types.
Section 2: Key Features
- Excellent corrosion resistance in oxidizing and reducing environments
- High strength at temperatures from cryogenic to 1000°F (540°C)
- Outstanding oxidation resistance at high temperatures
- Good resistance to pitting, crevice corrosion, and stress corrosion cracking
- ASTM B366 certified manufacturing process
- Complete material test reports (MTR) provided
- Full fitting types – Elbows, Tees, Reducers, Caps
Section 3: Available Grades Overview
| Grade | UNS No. | Key Feature | Main Applications |
|---|---|---|---|
| Inconel 625 | N06625 | High strength + corrosion resistance | Aerospace, marine, chemical |
| Inconel 718 | N07718 | Precipitation hardening | Gas turbines, nuclear |
| Inconel 600 | N06600 | Heat resistant | Heat exchangers, furnace |
Section 4: Chemical Composition (All Grades)
| Element | 625 | 718 | 600 |
|---|---|---|---|
| Ni (Nickel) | ≥58.0 | 50-55 | ≥72 |
| Cr (Chromium) | 20.0-23.0 | 17-21 | 14-17 |
| Mo (Molybdenum) | 8.0-10.0 | 2.8-3.3 | – |
| Nb (Niobium) | 3.15-4.15 | 4.75-5.50 | – |
| Fe (Iron) | ≤5.0 | Bal | 6-10 |
| Al (Aluminum) | ≤0.4 | 0.2-1.0 | – |
| Ti (Titanium) | ≤0.4 | 0.65-1.15 | – |
| C (Carbon) | ≤0.10 | ≤0.08 | ≤0.15 |
| Mn (Manganese) | ≤0.50 | ≤0.35 | ≤1.0 |
| Si (Silicon) | ≤0.50 | ≤0.35 | ≤0.5 |
Section 5: Mechanical Properties (All Grades)
| Property | 625 | 718 | 600 |
|---|---|---|---|
| Tensile Strength | ≥880 MPa | ≥965 MPa | ≥550 MPa |
| Yield Strength | ≥330 MPa | ≥550 MPa | ≥240 MPa |
| Elongation | ≥30% | ≥25% | ≥30% |
| Hardness | 95 HRB max | 100 HRB max | 95 HRB max |
Section 6: Fitting Types & Specifications
Available Fitting Types
| Type | Description | Angle/Type |
|---|---|---|
| Elbow | Pipe bend | 90°, 45°, 180° (R=1D, 1.5D, 3D, 5D) |
| Tee | Branch connection | Equal (Straight), Reducing |
| Reducer | Size change | Concentric, Eccentric |
| Cap | Pipe end closure | – |
| Cross | Four branch | – |
| Stub End | Lap joint | Type A, B, C |
Size Range
| Parameter | Range |
|---|---|
| Diameter | 1/2″ (DN15) – 24″ (DN600) |
| Wall Thickness | Sch5s, Sch10s, Sch40s, Sch80s, Sch160 |
| Radius | R=1D, 1.5D, 3D |
Applicable Standards
| Standard | Description |
|---|---|
| ASTM B366 | Factory-Made Wrought Fittings |
| ASTM B564 | Forged Flanges |
| ASME B16.9 | Butt-Weld Fittings |
| ANSI B16.9 | Dimension Standard |
| MSS SP-43 | Light Wall Fittings |
Section 7: Dimensions (Elbow)
90° Elbow Dimension (R=1.5D)
| Pipe Size | Center to End (A) | Outside Diameter |
|---|---|---|
| 1/2″ | 38mm | 21.3mm |
| 1″ | 76mm | 33.4mm |
| 2″ | 102mm | 60.3mm |
| 4″ | 152mm | 114.3mm |
| 6″ | 229mm | 168.3mm |
| 10″ | 381mm | 273.0mm |
| 12″ | 457mm | 323.9mm |
Section 8: Applications by Grade
| Grade | Recommended Applications |
|---|---|
| 625 | Aerospace engine components, marine hardware, chemical processing equipment, pollution control, nuclear reactors |
| 718 | Gas turbine engines, rocket motors, high-temperature piping, nuclear reactors |
| 600 | Heat exchangers, furnace components, steam generators, chemical containers |
Section 9: Why Choose Us
- ISO 9001:2015 certified manufacturer
- Mill test certificates provided with every order
- Competitive pricing direct from factory
- Quick lead times – typically 2-3 weeks
- Full fitting types – Elbows, Tees, Reducers, Caps
- Technical support – free material selection guidance
Section 10: FAQ
Q: What is the difference between R=1D and R=3D elbows?
A: R=1D (1 diameter) has a tighter bend radius, suitable for limited space. R=3D (3 diameters) provides smoother flow.
Q: What wall thickness options are available?
A: We provide options from Sch5s to Sch160, depending on the pipe size.
Q: Can you provide custom fittings?
A: Yes, we offer custom manufacturing to meet your specific requirements.






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