Inconel 718 is a precipitation hardened nickel iron chromium superalloy. It features outstanding high temperature strength, great creep resistance and superior comprehensive corrosion resistance. It can steadily resist erosion of strong acid, alkali, salt solution and various chemical media under high temperature and high pressure working conditions. With stable mechanical property, good welding performance and easy processing, it is widely used to manufacture core pressure vessels, reaction equipment and conveying pipelines in chemical industry.
Dimensional Tolerance
| Specification | Tolerance Requirement |
|---|---|
| Outer Diameter | Follow ASTM standard industrial tolerance |
| Wall Thickness | Strict deviation control for pressure bearing use |
| Product Length | Custom fixed length and random length available |
| Surface & Shape | Smooth surface, qualified roundness and straightness |
Basic Information
| Item | Details |
|---|---|
| Material Grade | Inconel 718, UNS N07718, W.Nr.2.4668 |
| Executive Standards | ASTM B637, ASTM B622, ASTM B670, ASME SB637 |
| Delivery Condition | Solution annealing, aging treatment |
Mechanical Properties
| Performance Index | Standard Data |
|---|---|
| Tensile Strength | ≥1275 MPa |
| Yield Strength | ≥1035 MPa |
| Elongation | ≥12% |
| Hardness | ≤44 HRC |
| High Temperature Strength | Keep stable strength below 650℃ |
Why Chemical Industry Chooses Inconel 718
| Advantage | Industry Application Reason |
|---|---|
| Multi-medium Corrosion Resistance | Resist acid, alkali, brine and organic chemical medium erosion |
| High Temperature Pressure Resistance | Adapt to high temperature reaction and high pressure delivery environment |
| Long Service Life | Reduce equipment replacement frequency and lower maintenance cost |
| Good Structural Stability | Not easy to deform under long-term chemical working environment |
| Easy Processing & Assembly | Suitable for chemical equipment manufacturing and pipeline layout |
Applicable Working Conditions
| Application Field | Practical Working Condition |
|---|---|
| Chemical Reaction Equipment | High temperature heating, closed high pressure reaction environment |
| Chemical Fluid Delivery | Corrosive liquid and gas long-distance conveying |
| Waste Water & Waste Gas Treatment | Strong corrosive waste medium treatment scene |
| Petrochemical Refining | High temperature distillation and crude oil processing environment |
| Fine Chemical Production | High purity medium production and sealed storage condition |
Core User Demands in Chemical Industry
| User Demand | Specific Requirement |
|---|---|
| Corrosion Safety | Avoid medium leakage caused by material corrosion damage |
| Pressure Bearing Safety | Meet pressure vessel safety operation standard |
| Stable Batch Quality | Ensure consistent performance of engineering batch materials |
| Engineering Matching | Support non-standard size customization for old equipment replacement |
| Complete Documents | Provide material test report for project audit and inspection |
Common Related Chemical Industry Products
| Product Type | Practical Usage |
|---|---|
| Inconel 718 Seamless Pipe | Chemical high pressure delivery pipeline |
| Inconel 718 Solid Bar | Equipment shaft parts, high strength fasteners |
| Inconel 718 Plate & Sheet | Chemical reactor lining, anti-corrosion shell |
| Inconel 718 Pipe Fittings | Elbow, tee, flange for chemical pipeline connection |
| Inconel 718 Forgings | High pressure valve body, chemical pump core parts |
Available Certificates
EN10204 3.1 certificate, MTR material test report, PMI spectrum detection, ultrasonic inspection, hydrostatic pressure test report, support various international chemical industry standard certification.