M2 High Speed Steel Blades and M4 High Speed Steel Blades
High-speed steel offers high wear resistance. M2 high-speed steel provides six to ten times more wear than conventional blade steel while M4 is three times more durable than M2. High-speed steel also has excellent temper resistance, holding hardness even when exposed to temperatures up to 1,000 ° F.
HIGH-SPEED STEEL
| STEEL TYPE | M2 | M4 | EXTRAWEAR FINE GRAIN |
| CHEMICAL ANALYSIS: (%) | |||
| CARBON (C) | 0.85/0.90 | 1.3 | 2.45 |
| MANGANESE (Mn) | |||
| SILICON (Si) | |||
| CHROMIUM (Cr) | 4.00/4.20 | 4.20/4.50 | 4.2 |
| TUNGSTEN (W) | 6.00/6.40 | 5.5 | 4.2 |
| VANADIUM (V) | 1.80/2.00 | 4 | 7.9 |
| COBALT (Co) | |||
| NICKEL (Ni) | |||
| MOLYBDENUM (Mo) | 5 | 4.5 | 3.1 |
| OTHER | |||
| TYPICAL HARDNESS, Rc | 62-66 | 61-66 | 58-66 |
| WEAR RESISTANCE | HIGH | EXTRA HIGH | EXTRA HIGH |
| WEAR INDEX ESTIMATE | 35 | 125 | 125 |
| TOUGHNESS / SHOCK RES. | LOW-MOD | LOW | LOW |
| MATERIAL COST | HIGH | HIGH | HIGH |
| FABRICATION COST | MOD | HIGH | HIGH |
| AVAILABILITY | GOOD | LIMITED | LIMITED |
| STOCKED THICKNESSES (in inches) | .010, .014, .024, .025, .029, .039, .057, .104, .110, .124 | 0.031 | 0.043 |
| THICKNESS RANGE | .010 - .125+ | .030 - .125+ | .030 - .125+ |
| CORROSION RESISTANCE | FAIR | FAIR | FAIR |
Please Note: This data is provided at no charge for the intended purpose of providing material application options to potential blade users. It is offered subject to the usual disclaimer that we have used sources and estimates believed to be reliable in the development of this information, but do not guarantee its accuracy in specific applications. Please note that the chemical elements noted by % are believed to be the major elements affecting performance. Other trace levels of elements may be found depending on supplier and heat number. This data should not be relied on in lieu of application-specific testing. Further, if you see data in these charts that you do not believe is accurate, we would appreciate your calling us with that information at 800-252-3371.
