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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
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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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