Carpenter Four Star High Speed Steel Red-Wear® (AISI M4)

Category	Metal , Ferrous Metal , Carbon Steel , High Carbon Steel , Tool Steel
Manufacturer	Carpenter Technology Corporation (Cartech)
Trade Name	Four Star
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Carpenter Four Star High Speed Steel Red-Wear® (AISI M4).pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

Carpenter Four Star, a molybdenum-tungsten high speed tool steel possessing high carbon and vanadium contents, provides a very high degree of wear resistance coupled with high strength.Applications: Lathe tools, Planer tools, Drills, Taps, Reamers, Broaches, Milling cutters, Form cutters, Thread chasers, Hobs, Counterbores, Inserts-heading diesInformation provided by Carpenter Technology Corporation.

Physical Properties	Metric	English	Comments
Density	7.97 g/cc	0.288 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	59 - 61	59 - 61	Tempered at 1200°F
	64 - 65	64 - 65	As hardened
Izod Impact Unnotched	47.0 J	34.7 ft-lb	when tempered at 900°F
Abrasion	20.2	20.2	loss in mm<sup>3</sup>, tested at 1000°F; ASTM G65
	28.4	28.4	loss in mm<sup>3</sup>, tested at 1175°F; ASTM G65

Component Elements Properties	Metric	English	Comments
Carbon, C	1.3 %	1.3 %
Chromium, Cr	4.5 %	4.5 %
Iron, Fe	79.6 %	79.6 %	As Balance
Manganese, Mn	0.30 %	0.30 %
Molybdenum, Mo	4.5 %	4.5 %
Silicon, Si	0.30 %	0.30 %
Tungsten, W	5.5 %	5.5 %
Vanadium, V	4.0 %	4.0 %

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