Certain terms tend to evoke specific associations when we first encounter them.
🪚 For instance, upon hearing the “Ni-Resist”, one might assume it refers to a type of stainless-steel alloy enhanced with additional nickel to improve its properties. Similarly, the term “Ni-Hard” might lead us to believe it denotes a nickel-based alloy characterized by high hardness.
❌ However, these materials differ from such initial impressions…
🆚 Ni-Hard and Ni-Resist are both nickel-containing cast irons, but they have different properties and applications.
🔶 Ni-Hard is a generic name for a family of white cast irons that is engineered for high hardness and extreme abrasion resistance and contains 4-5% nickel and 1.5-11% chromium. (ASTM A532)
🔷 Ni-Resist offers excellent heat and corrosion resistance, along with good mechanical properties and contains 13-35% nickel, depending on the grade. (ASTM A436- ASTM A439- ASTM A571)
✅ The Nickel Institute have publications on these special cast irons which give the properties and applications of the different alloys in each of these two casting families.
✅ I have combined these two reports, which you can read below.