Crucible Compaction Metals CPM® VIM CRU® 20®

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Crucible Compaction Metals CPM® VIM CRU® 20®
Categories:	Metal; Ferrous Metal; Tool Steel
Material Notes:	CPM® VIM CRU® 20® is a vacuum induction melted, cobalt-free super high speed steel manufactured by the Crucible Particle Metallurgy (CPM®) process. VIM CRU processing is designed to meet the cleanliness and property requirements needed for critical bearing applications. Advantages: High Attainable Hardness Excellent Hot Hardness Fine Carbide Size Uniform Carbide Distribution Excellent Wear Resistance Information provided by Crucible Compaction Metals.
Key Words:	Powder Metallurgy
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Physical Properties	Original Value	Comments

Density	8.172 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	262 - 285	Annealed
Hardness, Rockwell C	52	650°C Tempering Temperature;1150°C Hardening Temperature for 10 minutes
	54	650°C Tempering Temperature;1175°C Hardening Temperature for 5 minutes
	57	650°C Tempering Temperature;1205°C Hardening Temperature for 3 minutes
	61.5	595°C Tempering Temperature;1150°C Hardening Temperature for 10 minutes
	63	595°C Tempering Temperature;1175°C Hardening Temperature for 5 minutes
	63	As-Quenched; 1205°C Hardening Temperature for 3 minutes
	65	As-Quenched; 1175°C Hardening Temperature for 5 minutes
	65	595°C Tempering Temperature;1205°C Hardening Temperature for 3 minutes
	66	As-Quenched; 1150°C Hardening Temperature for 10 minutes
Modulus of Elasticity	34000 ksi
Flexural Strength	3957 MPa	1150°C Hardening Temperature, 550°C Tempering Temperature; 65.6 Rockwell Hardness C
	4005 MPa	1190°C Hardening Temperature, 550°C Tempering Temperature; 67 Rockwell Hardness C
Machinability	35 %	Based on W1 tool steel = 100%
Charpy Impact	12.0 ft-lb	1190°C Hardening Temperature, 550°C Tempering Temperature; 67 Rockwell Hardness C
	13.0 ft-lb	1150°C Hardening Temperature, 550°C Tempering Temperature; 65.6 Rockwell Hardness C

Thermal Properties	Original Value	Comments
CTE, linear	11.2 µm/m-°C @Temperature 38.0 - 260 °C
	12.4 µm/m-°C @Temperature 38.0 - 540 °C
Shrinkage	0.22 %	During hardening; 1190°C Hardening Temperature, 550°C Tempering Temperature, 67.5 Rockwell C Hardness

Component Elements Properties	Original Value	Comments
Carbon, C	1.35 %
Chromium, Cr	3.75 %
Iron, Fe	75.5 %	As Balance
Manganese, Mn	0.35 %
Molybdenum, Mo	10.5 %
Silicon, Si	0.25 %
Sulfur, S	<= 0.035 %
Tungsten, W	6.25 %
Vanadium, V	2.0 %

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NCRUC107 / 16071

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