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Crucible Steel REX® M2 S High Speed Steel

Category	Metal , Ferrous Metal , Tool Steel
Manufacturer	Crucible Steel
Trade Name
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Crucible Steel REX® M2 S High Speed Steel.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

REX M2 is a tungsten-molybdenum high speed steel which gives outstanding performance in all operations where a general purpose high speed steel is required. REX M2 has a wide hardening range, excellent toughness, with good wear and red hardness characteristics. REX M2S is the sulfur-bearing counterpart of REX M2. The sulfur addition provides good grindability and an improvement in machinability of 25 to 35 per cent over a comparable nonsulfurized grade.Information provided by Crucible Industries

Physical Properties	Metric	English	Comments
Density	8.14 g/cc	0.294 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	217 - 255	217 - 255
Hardness, Rockwell C	57 @Tempering Temp. 649 °C	57 @Tempering Temp. 1200 °F	hardened at 2250°F then tempered
	59 @Tempering Temp. 635.0 °C	59 @Tempering Temp. 1175 °F	hardened at 2250°F then tempered
	60.9 @Tempering Temp. 621 °C	60.9 @Tempering Temp. 1150 °F	hardened at 2250°F then tempered
	62.4 @Tempering Temp. 607.2 °C	62.4 @Tempering Temp. 1125 °F	hardened at 2250°F then tempered
	64 @Tempering Temp. 593 °C	64 @Tempering Temp. 1100 °F	hardened at 2250°F then tempered
	65 @Tempering Temp. 579.4 °C	65 @Tempering Temp. 1075 °F	hardened at 2250°F then tempered
	66 @Tempering Temp. 524 °C	66 @Tempering Temp. 975 °F	hardened at 2250°F then tempered
	66 @Tempering Temp. 566 °C	66 @Tempering Temp. 1050 °F	hardened at 2250°F then tempered
	66.8 @Tempering Temp. 538 °C	66.8 @Tempering Temp. 1000 °F	hardened at 2250°F then tempered
	66.8 @Tempering Temp. 551.7 °C	66.8 @Tempering Temp. 1025 °F	hardened at 2250°F then tempered
Modulus of Elasticity	207 GPa	30000 ksi

Thermal Properties	Metric	English
CTE, linear	11.5 µm/m-°C @Temperature 21.1 - 260 °C	6.40 µin/in-°F @Temperature 70.0 - 500 °F
	11.8 µm/m-°C @Temperature 21.1 - 427 °C	6.58 µin/in-°F @Temperature 70.0 - 800 °F
	12.1 µm/m-°C @Temperature 21.1 - 538 °C	6.72 µin/in-°F @Temperature 70.0 - 1000 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	0.85 %	0.85 %
Chromium, Cr	4.15 %	4.15 %
Iron, Fe	>= 81 %	>= 81 %	as balance
Manganese, Mn	0.30 %	0.30 %
Molybdenum, Mo	5.0 %	5.0 %
Silicon, Si	0.30 %	0.30 %
Sulfur, S	<= 0.030 %	<= 0.030 %
Tungsten, W	6.4 %	6.4 %
Vanadium, V	1.95 %	1.95 %

Chemical Properties	Metric	English	Comments
Critical Temperature	832 °C	1530 °F

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