Density: 8.23 g/cm³
Equivalent designations:
Haynes 556 Alloy, UNS No. R30556, ER3556, W.Nr 2.4952
Available products: pipe,tube,bar,rod,wire,sheet,strip,fastener,flange,pipe fittings
HAYNES 556 is an iron-nickel-chromium-cobalt alloy that combines effective resistance to sulfidizing, carburizing and chlorine-bearing environments at high temperatures with good oxidation resistance, fabricability, and excellent high-temperature strength. It has also been found to resist corrosion by molten chloride salts and other salts, and is resistant to corrosion from molten zinc.
Chemical composition:
| Grade | Componente químico % | |||||||||||||
| Co | C | Mn | Si | Cr | Ni | W | La | Fe | Zr | Mo | Ta | N | Al | |
| Haynes 556 | Max 18 | Max 0.1 | Max 1.0 | Max 0.4 | Max 22 | Max 20 | Max 2.5 | Max 0.02 | Bal | Max 0.02 | Max 3.0 | Max 0.6 | Max 0.2 | Max 0.2 |
Application for Haynes 556:
1. Tubing and structural members in municipal and industrial waste incinerators, rotary calciners kilns for minerals processing, and non-rotating components in land-based gas turbines burning low-grade fuels.
2. Chemical process industry, such as rotary calciners, carbon regenerators, and in processes involving high-sulfur petroleum feedstocks.
3. Metallurgical process industry, hot-dip galvanizing fixtures, spinners and baskets, and for high speed furnace fans.
4. Air preheaters of diesel engines, the inner covers of coil annealing furnaces, and in various high-temperature applications in the aerospace industry.