s90v,CPM420V-钢材资料

0 10 20 30 40 50 0 10 20 30 40 50 CRUCIBLE CPM S90V is a unique tool steel made by the Crucible Particle Metallurgy process. It is a martensitic stainless steel with a high volume of vanadium carbides for excep- tionally good wear resistance. S90V offers substantial improvements in wear resistance over 440C and D2, and other high chromium tool steels, with corrosion resistance equal to or better than 440C. Its high vanadium content favors the formation of hard vanadium carbides instead of chromium carbides for wear resistance, leaving sufficient chromium in the matrix to provide good corrosion resistance. The wear and corrosion resistance of S90V make it an excellent candidate to replace 440C, where increased wear is a primary concern. It can replace D2 or other tool steels in applications where improved corrosion resistance is also of benefit. Plastic Injection and Extrusion Feedscrews Non-return Valve Components Pelletizing Equipment Gate and Nozzle Inserts Industrial Knives, Slitters, and Cutters Long-wearing Specialty Cutlery Injection Molds and Inserts Wear Components for Food and Chemical Processing Bearings, Bushings, Valves, Rolls Gear Pumps Note: These are some typical applications. Your specific application should not be undertaken without independent study and evaluation for suitability. Impact Toughness CPM S90V offers higher impact toughness than 440C at comparable hardnesses. Wear Resistance* DATA SHEET CRUCIBLE CPM S90V® (CPM 420V®) Issue #8 Carbon 2.3% Chromium 14.0% Vanadium 9.0% Molybdenum 1.0% HARDNESS(1) MPACT TOUGHNESS(2) WEAR(3) HRC Heat Treatment ft.-lb. (Joules) CPM S90V 58 (A) 19 (26) 35/40 CPM 9V 55 (B) 47 (63) 35/40 440C 58 (C) 16 (22) 3/4 D2 59 (D) 22 (30) 3/4 (1) A=Hardened 2050°F (1120°C), double tempered 500°F (260°C) B=Hardened 2050°F (1120°C), double tempered 1025°F (550°C) C=Hardened 1900°F (1040°C), double tempered 400°F (204°C) D=Hardened 1850°F (1010°C), double tempered 600°F (315°C) (2) Charpy C-notch impact test (3) Crossed-cylinder adhesive wear test (higher number = better wear resistance). Crucible... The Tool Steel Pros® S90V 440C D2 C ha rp y C - N ot ch Im pa ct T ou gh ne ss (ft .- lb s. ) S90V 440C D2 R el at iv e Va lu es The CPM process results in a finer, more uniform carbide distribution imparting improved toughness and grindability to high alloy steels. The CPM process also allows the design of more highly alloyed grades which cannot be produced by conventional steelmaking. CPM Steel Conventional Steel 9V 9V Elastic Modulus 31X106 psi 215 GPa Density 0.27 lbs/in3 7.4g/cm3 Thermal Conductivity @ 200°F (65°C) 10 BTU/hr-ft-°F 17.3 W/m-°K Coefficient of Thermal Expansion °F °C in/in/°F mm/mm/°C 70-400 20-200 6.1 X 10-6 11.0 X 10-6 70-600 20-315 6.4 X10-6 11.5 X 10-6 *Adhesive Wear (metal to metal sliding wear.) Tool Steel Comparagraph Physical Properties Mechanical Properties Typical Applications The CM logo, Crucible, CPM, S90V, 9V, and Tool Steel Pros are trademarks or service marks of Crucible Materials Corporation, Syracuse, NY. Corrosion tests measure the amount of material lost to corrosion. Therefore, lower numbers indicate better corrosion resistance. Corrosion Test Results(1) in mm/year Boiling 10% Acetic (2) Dilute Aqua-Regia (3) CPM S90V 9/17 102/117 440C 29 109 D2 267 411 Notes: (1) Lower numbers indicate better corrosion resistance. All grades heat treated to about HRC 56/58. Corrosion resistance depends srongly on heat treated condition and specific environment. Results should be used as a qualitative comparison only. (2) 24 hrs. (3) 5% HNO3 -1% HCl (nitric + hydrochloric acids) at 24°C. Relative Corrosion Rates (Lower numbers indicate better corrosion resistance.) 0 100 200 300 400 0 100 200 300 400 Annealing Heat to 1650° F (900°C), hold 2 hours, slow cool at a maximum rate of 25° F (15°C) per hour to 1100° F (595C°), then furnace cool or cool in still air to room temperature Annealed Hardness: Approx. BHN 277 Stress Relieving Annealed Parts: Heat to 1100-1300°F (595-705°C), hold 2 hours, then furnace cool or cool in still air. Hardened Parts: Heat to 25-50° F (15-30°C) below original tempering temperature, hold 2 hours, then furnace cool or cool in still air. Hardening Austenitize: 2100-2150°F (1150-1175°C) Hold time at temperature: 20 minutes Quench: Salt quench, interrupted oil quench, positive pressure gas quench or air cool at a minimum cooling rate of 150°F/min (80°C/min) to below 1000°F (540°C). Cool to below 125°F (50° C) before tempering. For optimum vacuum heat treatment response, a minimum 4 bar gas quench is recommended. Temper: Double temper at 400-750° F (200-400°C). Hold for a miniumum of 2 hrs. each temper. For optimum stress relieving and dimensional stability, S90V may be double tempered at 1000-1025° F (540-550°C), but tempering above 800°F (425°C) may result in some loss of corrosion resistance. A freezing treatment may be employed between the first and second tem- pers, if desired. Freezing treatments should always be followed by at least one temper. PLEASE NOTE: Tempering between about 800 and 1000°F (425 and 540°C) is not recommended. All martensitic stainless steels suffer from embrittlement when tempered in this range. Aim Hardness: HRC 56/59 Size Change: +0.03 to +0.05% Size change shown is for a fully martensitic microstructure. The presence of retained austenite may reduce the net growth. When tempering at 400-750°F (200-400°C), freezing treatments may be necessary to minimize retained austenite. Service Center Locations Location Phone Toll Free FAX Auburn, MA 508-832-5353 800-365-1101 508-832-2217 Charlotte, NC 704-372-3073 800-365-1160 704-342-0985 Chicago, IL 630-378-0093 800-365-1151 630-378-1965 Cincinnati, OH 513-771-1310 800-365-1163 513-771-0119 Cleveland, OH 330-562-3131 800-365-1132 330-562-7818 Columbus, OH 614-262-4959 800-365-1131 614-262-7850 Dallas, TX 817-649-2800 800-365-1168 817-633-8142 Detroit, MI 248-528-0332 800-365-1133 248-528-1977 Grand Rapids, MI 616-554-9699 800-365-1137 616-554-9328 Huntsville, AL 256-772-0201 800-365-1161 256-772-3361 Indianapolis, IN 317-638-4501 800-365-1146 317-634-7375 Los Angeles, CA 714-632-1131 800-365-1179 714-632-1181 Location Phone Toll Free FAX Meadville, PA 814-337-8804 800-365-0530 814-337-8808 Milwaukee, WI 262-781-6710 800-242-0948 262-781-6743 Minneapolis, MN 612-331-6320 800-365-1153 612-331-4137 St. Louis, MO 636-272-7220 877-201-4049 636-978-9559 Canada Blenheim/Windsor, ONT 519-354-4420 800-265-5293 519-354-4401 Mexico (SISA) Naucalpan, E. de M. 52-555-576-4011 52-555-359-7567 CRUCIBLE SERVICE CENTERS DIVISIONAL HEADQUARTERS: Syracuse, NY 315-487-0800 800-365-1185 315-487-4028 www.crucibleservice.com email: crucible@crucible.com DS404 03/06 CPM S90V ©Crucible Materials Corp Printed in USAA Division of Crucible Materials Corporation Boiling Acetic Aqua-Regia S90V 440C S90V 440C Note: Properties shown throughout this data sheet are typical values. Normal variations in chemistry, size and heat treat conditions may cause deviations from these values. For additional data or metallurgical engineering assistance, consult your local Crucible Service Center. D2 D2 mm/y mm/y Tempering Temperatures 400°- 800°F (200°-425°C) Best Corrosion Resistance & Wear Resistance 800°-1000°F (425°-540°C) AVOID THIS RANGE (Embrittlement) 1000°-1025°F (540°-550°C) Stress Relieving and Dimensional Stability Due to its high vanadium carbide content, the machinabili- ty and grindability of S90V will be slightly more difficult than that of D2 or 440C. Similar grinding equipment and practices are acceptable. SG type alumina wheels or CBN wheels have generally given the best performance with the CPM steels. Thermal TreatmentsCorrosion Resistance Machinability and Grindability