The nickel-based Hastelloy family includes alloy C22. Hastelloy screws have an FCC microstructure, which indicates austenite is present because nickel is the main alloying element. Austenite alloys can typically display extremely high levels of ductility. Hastelloy C22 screws and other shapes are possible thanks to the metal's ductility feature. The shank of screws is threaded. Screws with threads enable a more secure and rapid fastening.
Hastelloy socket head cap screws are a flexible alloy that can be used in a variety of applications. The metal is used mostly as fasteners in marine engineering. The hastelloy set screws are perfect for use in maritime engineering or for applications in coastal areas due to the alloy's capacity to display higher resistance to both pitting and crevice corrosion. Hastelloy C set screws are resistant to oxidising environments due to the alloy's substantial chromium concentration. Similarly, the hastelloy c276 screws display sufficient resistance to reducing media due to the alloy's enhancement by the addition of molybdenum and tungsten.
| Standard | IS, ANSI, ASTM DIN, ISO, JIS, GB, ASME, BS, UNI and all International Standards |
|---|---|
| Threads: | BSF, UNF METRIC, UNC, BSW or as required |
| Standard | ANSI – American National Standards Institute
DIN:DIN 933, DIN 931, DIN 970, DIN 934 UTS – Unified Thread Standard : UNF, NPT, NPTF, UNS, UNC, UNEF ISO – International Organization for Standardization ISO 4033, : ISO 4032, JIS standards |
| Fasteners/ Bolts Size | M10, M4, M16, M36 M2.5, M6, M30, M12, M8, M14, M2, M3, M20, M24, M5 to M160 |
| Length | 3 mm to 200 mm |
| Head drive: | Phillips, Slotted, Phillips/Slot, Six-Lobe etc |
| Test Certificate | as per EN 10204 / 3.1 Manufacturer Test Certificate |
| Finishing | Zinc white, (yellow, black, blue), black oxide,
Dacroment, Geometry, plated zinc-nickel, anodizing, nickel plated, Stainless steel: Passivated Self-Colour, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), Sherardized, Stainless Steel, some special one like DACROMET and Mechanically Applied coating |
| raw materials of Source | JSPL, Usha Martin, Tata Steel, Mukund Steel, RINL, Dhamm Steel etc. |
| Form | Square, Hex, Threading as per Gauge, Round Etc. |
| Process of Production | M2-M24: Cold Froging, hot forging M24-M100, machining and CNC for Customized connecting element |
| Surface Coating |
|
| Packing | IN BULK: pallet, canton, carton / Small Boxs / pallet or customer request |
| Grade | Ni | C | Mo | Mn | Si | Fe | P | S | Co | Cr |
|---|---|---|---|---|---|---|---|---|---|---|
| Hastelloy C22 | Balance | 0.010 Max | 15.00 – 17.00 | 1.00 Max | 0.08 Max | 4.00 – 7.00 | 0.04 Max | 0.03 Max | 2.5 Max | 14.50 – 16.50 |
| Balance | 0.010 Max | 12.5 – 14.5 | 0.50 Max | 0.08 Max | 2 – 6 | 0.02 Max | 0.02 Max | 2.5 Max | 20 – 22. |
Density |
Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation | |
|---|---|---|---|---|---|
| C22 | 8.69 G/Cm3 | 1399 °C (2550 °F) | Psi – 1,00,000 , MPa – 690 | Psi – 45000 , MPa – 310 | 45 % |
| C276 | 8.89 G/Cm33 | 1370 °C (2500 °F) | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 40% |
| B2 | 9.2 G/Cm3 | 1370 °C (2550 °F) | Psi – 1,15,000 , MPa –760 | Psi – 52,000 , MPa – 350 | 40% |
| B3 | 9.2 G/Cm3 | 1370 °C (2550 °F) | Psi – 1,15,000 , MPa –760 | Psi – 52,000 , MPa – 350 | 40% |
| C4 | 8.64 G/Cm3 | 1350-1400 °C | 783 | 365 | 55% |
| Hybrid BC1 | 8.83 G/Cm³ | 1343 - 1443°C | 725 | 310 | 40% |
| X | 8.22 G/Cm³ | 1355°C | 655 MPa | 240 MPa | 35% |
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
|---|---|---|---|---|---|---|---|
| Hastelloy C22 | N06022 | 2.4602 | – | NiCr21Mo14W | NW 6022 | – | – |
| Hastelloy C276 | N10276 | 2.4819 | – | NiMo16Cr15W | NW 0276 | – | ХН65МВУ |
