NS334 is a nickel-based alloy, with high-temperature and corrosion-resistant properties.
NS334 Equivalent Grades: Hastelloy C-276, W.Nr. 2.4819 NiMo16Cr15W (Germany), NC17D (France)
Overview of Features and Application Fields:
The alloy exhibits excellent corrosion resistance to most corrosive mediums in both oxidized and reduced states. It boasts superior resistance to pitting, crevice, and stress corrosion cracking. The alloy is suitable for various chemical process industries involving oxidizing and reducing mediums. Higher
The molybdenum and chromium content enables the alloy to withstand corrosion from chloride ions, while the tungsten element further enhances its corrosion resistance. Hastelloy C-276 is one of the few materials that can resist corrosion from damp chlorine gas, hypochlorite salts, and chlorine dioxide solutions. The alloy is suitable for
High-concentration chloride salt solutions exhibit significant corrosion resistance (such as ferric chloride and copper chloride).
Chemical Composition
| C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≥ | Ni≥ | Mo≥ | Cu≤ |
| 0.02 | 0.08 | 1.00 | 0.040 | 0.030 | 14.5-16.5 | Surplus | 15.0-17.0 | - |
| Other | Al≤ | Ti≤ | Fe≤ | N≤ | Co≤ | Nb≤ | W≤ | V≤ |
| - | - | 4.0-7.0 | - | 2.50 | - | 3.00-4.50 | 0.35 |
Execution Standards
Metallographic microstructure:
The alloy features a face-centered cubic lattice structure.
Process performance and requirements:
1. The lower the sulfur content in hot-processed fuel, the better. The sulfur content in natural gas should be less than 0.1%, and the sulfur content in heavy oil should be less than 0.5%.
2. The thermal processing temperature range of the alloy is 1200℃ to 950℃，with cooling methods available in water quenching or rapid air cooling.
3. Suitable for welding with any traditional welding techniques, such as tungsten electrode inert gas welding, plasma arc welding, manual sub-arc welding, metal electrode inert gas welding, and熔化极惰性气体保护焊.
NS334 Main Specifications:
NS334 Seamless Pipe, NS334 Steel Plate, NS334 Round Bar, NS334 Forging, NS334 Flange, NS334 Ring, NS334 Welded Pipe, NS334 Steel Strip, NS334 Rod, NS334 Wire Material, and Associated Welding Materials, NS334 Machined Parts
