DESCRIPTION
M2 – instrumental high-speed steel, tungsten-molybdenum type which is characterized by excellent impact strength, good custody cutting edge, the ability to grinding and abrasion resistance.
Typical application of M2: all kinds of cutting tools for roughing or finishing such as twist drills, different cutters, dies for threading, broaching, reamers, drills, circular saws segments, planing cutters and woodworking tools. It is also very well suited for cold processing tools such as cold extrusion matrix, special cutting tools precision plastic molds with high wear resistance and screws.
CHEMICAL COMPOSITION
| Nom. composition |
С |
Si |
Mn |
S |
P |
Сr |
Ni |
Fe |
Cu |
W |
V |
Co |
Mo |
| Min |
0.82 |
0.20 |
0.20 |
– |
– |
3.80 |
– |
Rest |
– |
5.50 |
1.70 |
– |
4.80 |
| Max |
0.90 |
0.50 |
0.50 |
0.025 |
0.030 |
4.40 |
0.60 |
0.25 |
6.50 |
2.10 |
0.50 |
5.30 |
PHYSICAL PROPERTIES
| Density |
Coefficient of elasticity |
Thermal conductivity at 20°С |
Thermal conductivity at 350°С |
Hardness |
Coefficient of linear expansion, α x 10-6/К |
| g/cm3 |
GPa |
W/mK |
W/mK |
HRC |
100°С |
200°С |
300°С |
500°C |
700°С |
| 8.15 |
217 |
32.80 |
23.50 |
66 |
11.50 |
11.70 |
12.20 |
12.70 |
12.90 |
PRODUCT RANGE
| Finish |
Diameter, mm |
Tolerance |
Hardness, НВ |
| Cold drawn |
10.00 – 18.00 |
-0.09 |
207 – 255 |
| 18.00 – 25.00 |
-0.11 |
| Hot rolled |
6.50 – 20.00 |
+/-0.40 |
| 20.00 – 30.00 |
+/-0.50 |
| 30.00 – 50.00 |
+/-0.60 |
| 50.00 – 75.00 |
+/-0.80 |
| Forged |
75.00 – 80.00 |
+2.00 / -1.00 |
| 80.00 – 100.00 |
+2.50 / -1.00 |
| 100.00 – 120.00 |
+2.50 / -1.50 |
| 120.00 – 140.00 |
+3.00 / -1.50 |
| 140.00 – 160.00 |
+3.00 / -2.00 |
| 160.00 – 180.00 |
+4.00 / -2.00 |
| 180.00 – 200.00 |
+5.00 / -2.00 |
| 200.00 – 220.00 |
+5.00 / -3.00 |
| 220.00 – 240.00 |
+6.00 / -3.00 |
| 240.00 – 250.00 |
+7.00 / -3.00 |
ANALOGUES
| W.N |
AISI |
DIN |
| 1.3343 |
M2 |
HS6-5-2C |
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