Hardness of Common Nickel Alloys
Nickel alloys are known for their exceptional hardness and strength, making them widely used in various industries. The hardness of nickel alloys is influenced by factors such as composition, heat treatment, and processing methods.
The following table provides a curated list of Brinell hardness (HB) values for common nickel alloys at room temperature (approximately 20°C or 68°F).
| UNS number | ||
|---|---|---|
| Alloy 400 | N04400 | 125 - 215 |
| HASTELLOY® B | N10001 | 100 - 230 |
| HASTELLOY® B2 | N10665 | 235 |
| HASTELLOY® C4 | N06455 | 184 |
| HASTELLOY® C22 | N06022 | 209 |
| HASTELLOY® C276 | N10276 | 185 |
| HASTELLOY® C2000 | N06200 | 290 |
| HASTELLOY® G3 | N06985 | 184 |
| HASTELLOY® HX | N06920 | 184 |
| HASTELLOY® S | N06635 | 168 |
| HASTELLOY® X | N06002 | 150 - 280 |
| HAYNES® 230 | N06230 | 200 |
| HAYNES® 242 | N10242 | 257 |
| HAYNES® 556 | R30556 | 91 |
| INCOLOY® 800 | N08800 | 138 - 180 |
| INCOLOY® 800HT | N08811 | 138 - 180 |
| INCOLOY® 825 | N08825 | 150 |
| INCOLOY® 902 | N09902 | 300 |
| INCOLOY® 925 | N09925 | 315 |
| INCONEL® 600 | N06600 | 120 - 150 |
| INCONEL® 601 | N06601 | 110 - 150 |
| INCONEL® 617 | N06617 | 173 |
| INCONEL® 625 | N06625 | 186 |
| INCONEL® 690 | N06690 | 175 |
| INCONEL® 718 | N07718 | 331 |
| INCONEL® 751 | N07751 | 173 - 352 |
| INCONEL® X-750 | N07750 | 382 |
| Invar® 36 | K93601 | 160 |
| Invar® 42 | K94100 | 160 |
| MONEL® 400 | N04400 | 110 - 150 |
| MONEL® 401 | N04401 | 43 |
| MONEL® 404 | N04404 | 44 |
| MONEL® K-500 | N05500 | 290 - 300 |
| MONEL® R-405 | N04405 | 110 - 140 |
| NIMONIC® 75 | N06075 | 170 |
| NIMONIC® 80A | N07080 | 370 |
| NIMONIC® 90 | N07090 | 380 |
| NIMONIC® 105 | N07105 | 380 |
| NIMONIC® 115 | N07115 | 400 |
| NIMONIC® 263 | N07263 | 320 |
| NIMONIC® PE16 | 280 |
Related Tables
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018.