Carpenter Speed Star® High Speed Steel (Red-Hard) (AISI M2)

Category	Metal , Ferrous Metal , Tool Steel
Manufacturer	Carpenter Technology Corporation (Cartech)
Trade Name	Speed Star®
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Carpenter Speed Star® High Speed Steel (Red-Hard) (AISI M2).pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

Speed Star high speed steel in a fine-grained "Moly"-Tungsten high-speed steel manufactured under close control. It has certain advantages over 18-4-1 high speed steels, some of which are lower cost, less weight per cubic inch, lower hardening temperature and somewhat easier machining.Applications: Lathe tools, Planer tools, Drills, Taps, Reamers, Broaches, Milling cutters, Form cutters, Thread chasers, End mills, Gear cutters, Wood knivesInformation provided by Carpenter Technology Corporation.Speed Star® is a registered trademark of Carpenter Technology Corporation.

Physical Properties	Metric	English	Comments
Specific Gravity	8.15 g/cc	8.15 g/cc

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	62	62	Tempered at 1150°F, Quenched at 2200°F
	65	65	As hardened, Quenched at 2200°F
Compressive Yield Strength	3250 MPa	471000 psi	when tempered at 300°F
Izod Impact Unnotched	67.0 J	49.4 ft-lb	when tempered at 300°F
Abrasion	25.8	25.8	loss in mm<sup>3</sup>, As-Hardened; ASTM G65
	77.7	77.7	loss in mm<sup>3</sup>, Tempered at 1275°F; ASTM G65

Thermal Properties	Metric	English
CTE, linear	10.0 µm/m-°C @Temperature 20.0 - 100 °C	5.56 µin/in-°F @Temperature 68.0 - 212 °F
	12.2 µm/m-°C @Temperature 20.0 - 500 °C	6.78 µin/in-°F @Temperature 68.0 - 932 °F
	12.6 µm/m-°C @Temperature 20.0 - 850 °C	7.00 µin/in-°F @Temperature 68.0 - 1560 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	0.82 %	0.82 %
Chromium, Cr	4.25 %	4.25 %
Iron, Fe	81.33 %	81.33 %	As Balance
Manganese, Mn	0.30 %	0.30 %
Molybdenum, Mo	5.0 %	5.0 %
Silicon, Si	0.25 %	0.25 %
Tungsten, W	6.25 %	6.25 %
Vanadium, V	1.8 %	1.8 %

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