Haynes 4.89 Guide

The search for Haynes 4.89 reflects a broader industry trend: the push for lighter, hotter, and stronger materials. As hydrogen turbines and hypersonic flight move from research to reality, alloys with densities around 4.9 g/cm³ will become critical. Haynes International is uniquely positioned to commercialize such a grade, potentially rebranding it as "Haynes 490" or integrating it into the Hastelloy X low-density variant.

For now, if your application demands the precise combination of 4.89 g/cm³ density and superalloy strength, you are on the cutting edge. Your next step is not to buy—but to partner with a metallurgist and a Haynes sales engineer to qualify this material for your specific use case. haynes 4.89

A: Not in the sense of Hastelloy or Monel. It is almost certainly an internal development code or a very specific customer specification. It is not listed in any major standards (AMS, ASTM, UNS). The search for Haynes 4

Density is the silent killer in engineering. In applications ranging from gas turbine blades to space vehicle landing gear, "every gram counts." Most traditional nickel superalloys (e.g., Inconel 718) have a density around 8.19 g/cm³. Steel sits at roughly 7.8 g/cm³. A material with a density of 4.89 g/cm³ is incredibly lightweight—closer to titanium (4.5 g/cm³) than to nickel. For now, if your application demands the precise

If a Haynes alloy exhibits a density of 4.89, it is almost certainly a Cobalt-based alloy or a specialized Iron-Nickel-Cobalt superalloy with a high aluminum and titanium content.