Acciaio AISI M1 / 1.3346 / DIN S2-9-1
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Specifiche, Chemical & prestazioni meccaniche
Designazione secondo gli standard
| Brand | Ravne No. | Stuoia. No. | DIN | EN | AISI |
| BRM1 | 877 | 1.3346 | S2-9-1 | - | M1 |
Composizione chimica (in% in peso)
| C | Si | Mn | Cr | Mo | Ni | V | W | Altri |
| 0.82 | max. 0.45 | max. 0.40 | 3.85 | 8.60 | - | 1.15 | 1.75 | - |
Descrizione
M1 is a molybdenum, chromium, vanadium alloy tool steel generally known as a Molybdenum High Speed Tool Steel. It is on of the most widely available tool steels in use today. It is similar in properties to the tungsten tool steels (T series) at a lower. Very tough high-speed Mo steel good grindability.
Applicazioni
Twist drills, thread cutting tools, hobs and dies for broaching and cold flow pressing, cross recess dies for screw manufacture, cold rolling for e.g. Sendzimir equipment.
Proprietà fisiche (valori medi) a temperatura ambiente
Modulo di elasticità [103 x N / mm2]: 217
Densità [g / cm3]: 8.0
Conducibilità termica [W / mK]: 19.0
Resistività elettrica [Ohm mm2/ m]: 0.60
Capacità termica specifica [J / gK]: 0.46
Coefficient of Linear Thermal Expansion 10-6oC-1
| 20-100oC | 20-200oC | 20-300oC | 20-400oC | 20-500oC | 20-600oC | 20-700oC |
| 11.0 | 11.5 | 11.9 | 12.3 | 12.4 | 12.5 | 12.5 |
Continuous Cooling Transformation (CCT) Diagram
Click the image to enlarge the diagram.
Ricottura Morbida
Riscalda a 820-850oC, cool slowly in furnace to 550oC then air. This will produce a maximum Brinell hardness of 262.
Alleviare lo stress
Stress relieving to remove machining stresses should be carried out by heating to 600-650oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening
0 Harden from a temperature of 1180-1219oC followed by air or oil quenching or warm bath at 550oC. Hardness after quenching is 64-66 HRC.
tempra
Tempering temperature: 530 – 560oC, at least 2x for at least 63 HRC.
Tempering Diagram
Click the image to enlarge the diagram.
Forgiatura
Temperatura di formatura a caldo: 1100-900oC.
Cold Working
This alloy may be cold worked in the annealed condition.
lavorabilità
M1 is classified as a “medium” machinable alloy. Machining should be accomplished prior to hardening heat treatment followed by finish grinding. It has a rating of 50% that of the water hardening (W group) low alloy tool steels in regard to machinability.
Resistenza alla corrosione
This is not a corrosion resistant alloy. In use as tooling it is often coated with oil to prevent rusting. A light film of oil. or protective wrapping, is essential to keep it free from corrosion.
Saldatura
Consult the alloy supplier for information on weld procedures.
Moduli prodotti: consultare il programma di vendita dimensionale.
