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Uddeholm Vanadis® 8 Superclean Uddeholm Vanadis 8 Superclean

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Uddeholm Vanadis® 8 Superclean Uddeholm Vanadis 8 Superclean Uddeholm Vanadis® 8 SuperClean Uddeholm Vanadis 8 SuperClean © UDDEHOLMS AB No part of this publication may be reproduced or transmitted for commercial purposes without permission of the copyright holder. This information is based on our present state of knowledge and is intended to provide general notes on our products and their uses. It should not therefore be construed as a warranty of specific properties of the products described or a warranty for fitness for a particular purpose. Classified according to EU Directive 1999/45/EC For further information see our “Material Safety Data Sheets”. Edition 8, 05.2019 2 Uddeholm Vanadis 8 SuperClean CRITICAL TOOL APPLICATIONS STEEL PROPERTIES Uddeholm Vanadis 8 SuperClean is espe- cially suitable for very long run tooling where FOR GOOD TOOL PERFORMANCE abrasive wear is the dominating problem. Its • Correct hardness for the application very good combination of extremely high wear • Very high wear resistance resistance and good toughness also make • Sufficient toughness to prevent premature Uddeholm Vanadis 8 SuperClean an interest- failure due to chipping/crack formation ing alternative in applications where tooling made of such materials as cemented carbide High wear resistance is often associated with or high speed steels tends to chip or crack. low toughness and vice-versa. However, for op timal tool performance both high wear Examples: resis tance and toughness are essential in • Blanking and forming many cases. • Fine blanking Uddeholm Vanadis 8 SuperClean is a pow- • Blanking of electrical sheet der metallurgical cold work tool steel offering a • Gasket stamping combina tion of extremely high wear resistan ce • Deep drawing and good toughness. • Cold forging • Slitting knives (paper and foil) FOR TOOLMAKING • Powder pressing • Granulator knives • Machinability • Extruder screws etc. • Heat treatment • Dimensional stability in heat treatment • Surface treatment Toolmaking with highly alloyed steels means GENERAL that machining and heat treatment are often Uddeholm Vanadis 8 SuperClean is a more of a problem than with the lower alloyed chromium-molybdenum-vana dium alloyed grades. This can, of course, raise the cost of steel which is characterized by: toolmaking. • Very high abrasive and adhesive wear Due to the very carefully balanced alloying resistance and the powder me­­tallurgical manufacturing route, Uddeholm Vanadis 8 SuperClean has a • High compressive strength, 64 HRC similar heat treatment pro ced ure to the steel • Very good through-hardening properties AISI D2. One very big ad vantage with Udde- • Good ductility holm Vanadis 8 SuperClean is that the dimen- • Very good stability in hardening sional stability after hardening and tempering • Good resistance to tempering back is much better than for the conventionally • Good machining and grinding properties produced high performance cold work steels. This also means that Uddeholm Vanadis 8 Su- perClean is a tool steel which is very suitable Typical C Si Mn Cr Mo V for surface coatings. analysis % 2.3 0.4 0.4 4.8 3.6 8.0 Delivery condition Soft annealed to ≤ 270 HB Colour code Green/light violet 3 Uddeholm Vanadis 8 SuperClean PROPERTIES MACHINABILITY PHYSICAL DATA Relative machinability for Uddeholm PM SuperClean steels Vanadis 10, Vanadis 8, Hardened and tempered to 62 HRC. Vanadis 23 and Vanadis 4 Extra compared with Temperature 20°C 200°C 400°C a 10% Vanadium steel from another producer, (68°F) (390°F) (750°F) PM10V. Density kg/m3 7 460 – – lbs/in3 0.270 Modulus of elasticity N/mm2 230 000 210 000 200 000 psi 33.8 x 106 31.9 x 106 29.7 x 106 Turning uncoated carbide Drilling uncoated HSS Coefficient of thermal expansion per Machinablity pro °C ab 20°C – 10.8 x 10–6 11.6 x 10–6 1 °F from 68°F 6.0 x 10-6 6.5 x 10-6 Thermal 0.8 conductivity W/m • °C – 25 28 Btu in/(ft2 h °F) 173 194 0.6 Specific heat J/kg °C 470 – – 0.4 Btu/lb °F 0.11 0.2 DUCTILITY Vanadis 10 PM 10V Vanadis 8 Vanadis 23 Vanadis 4 Extra Impact test, unnotched, CR2 (thickness direction). The impact strengths shown, are average HEAT TREATMENT values. Uddeholm Vanadis 8 SuperClean and Uddeholm Vanadis 23 SuperClean have a SOFT ANNEALING similar impact strength. Protect the steel and heat through to 900°C (1650°F). Cool in the furnace at 10°C (20°F) Joule per hour to 650°C (1200°F), then freely in air. 100 90 Vanadis 4 Extra 80 STRESS RELIEVING 70 After rough machining the tool should be heated through to 650°C (1200°F), holding 60 time 2 hours. Cool slowly to 500°C (930°F), 50 then freely in air. 40 30 Vanadis 8 and HARDENING Vanadis 60 Vanadis 23 20 Pre-heating temperature: First pre-heating 10 at 600–650°C (1110–1200°F) and second at 850–900°C (1560–1650°F) 54 56 58 60 62 64 66 68 70 72 HRC Austenitizing temperature: 1020–1180°C (1870–2160°F) Holding time: 30 minutes for hardening tem- peratures up to 1100°C (2010°F), 15 minutes for temperatures higher than 1100°C (2010°F). Note: Holding time = time at hardening tem- perature after the tool is fully heated through. 4 Uddeholm Vanadis 8 SuperClean A holding time of less than recommended time will result in loss of hardness. The tool should be protected against de- car buriza tion and oxidation during hardening. Further information can be found in the Uddeholm brochure “Heat treatment of tool steels”. QUENCHING MEDIA • Vacuum (high speed gas at sufficient overpressure minimum 2 bar) • Martempering bath or fluidized bed at 200–550°C (390–1020°F) • Forced air/gas Note: Temper the tool as soon as its tempera- ture reaches 50–70°C (120–160°F). In order to obtain the optimum properties for the tool, the cooling rate should be as fast as possible with regards to acceptable distortion. A slow quench rate will result in loss of hardness compared with the given tempering curves. Martempering should be followed by forced air cooling if wall thickness is exceeding 50 mm (2"). CCT-GRAPH Austenitizing temperature 1020°C (1870°F). Holding time 30 minutes. °F °C 2000 1100 Austenitizing temperature 1020°C (1870°F) Holding time 30 min. 1800 1000 Ac 900 1f 1600 = 865°C (1590°F) Ac 1s 800 = 818°C (1505°F) 1400 Carbide 700 Cooling T Curve Hardness 8 1200 Pearlite No. HV 10 (sec) 600 1 853 1 1000 500 2 822 28 800 3 761 450 400 Bainite 4 793 1030 600 300 5 721 2325 Ms 400 200 Martensite 6 533 5215 518 200 100 7 7320 1 2 3 4 5 6 7 8 8 469 10400 1 10 100 1 000 10 000 100 000 Seconds 1 10 100 1 000 Minutes 1 10 100 Hours Air cooling of 0.2 1.5 10 90 600 ars mm 5 Uddeholm Vanadis 8 SuperClean TEMPERING and compressive strength to some extent but Choose the tempering temperature according also impair cracking resistance and dimen- to the hardness required by reference to the sional stability. However, if lowering the tempering graph. Temper at least twice with tempering temperature, do not temper below intermediate cooling to room temperature. 520°C (970°F). For highest dimensional stability and ductil- When tempering twice the minimum holding ity, a minimum temperature of 540°C (1000°F) time at temperature is 2 hours. When temper- and three tempers is strongly recommended. ing three times the minimum holding time is Tempering at a lower temperature than 1 hour. 540°C (1000°F) may increase the hardness TEMPERING GRAPH Vanadis 8 SupeClean (T8/5=300s). The tempering curves are obtained after heat treatment of samples with a size of 15 x 15 x 40 mm, cooling in forced air. Lower hardness can be expected after heat treatment of tools and dies due to factors like actual tool size and heat treatment parameters. 70 80 1020°C 70 1100°C 65 8C 60 50 60 40 55 30 20 50 10 Hardness HRC 45 0 Retained Austenite % 400 450 470 490 500 510 520 530 540 550 560 575 600 Tempering temperature (2x2h) 6 Uddeholm Vanadis 8 SuperClean CUTTING DATA MILLING RECOMMENDATIONS FACE AND SQUARE SHOULDER MILLING Milling with carbide The cutting data below are to be considered Cutting data parameter Rough milling Fine milling as guiding values which must be adapted to Cutting speed (v ) existing local conditions. Further information c m/min. 40–70 70–100 can be found in the Uddeholm publication f.p.m. 130–230 230–330 “Cutting data recommendations”. Feed (fz) mm/tooth 0.2–0.4 0.1–0.2 Delivery condition: Soft annealed to ≤270 HB in/tooth 0.008–0.016 0.004–0.008 Depth of cut (ap) mm 2–4 1–2 inch 0.08–0.16 0.04–0.08 TURNING Carbide designation * * Turning with carbide Turning with ISO K20, P10–P20 K15, P10 high speed C3, C7–C6 C3, C7 steel * Use a wear resistant Al 0 -coated carbide grade Cutting data Rough Fine Fine 2 3 parameter turning turning turning Cutting speed (v ) c END MILLING m/min 70–100 100–120 8–10 f.p.m. 230–330 330–395 28–22 Type of mill Feed (f) Carbide mm/rev 0.2–0.4 0.05–0.2 0.05–0.3 Cutting data Solid indexable High speed i.p.r. 0.008–0.016 0.002–0.008 0.002–0.012 parameter carbide insert steel1) Depth of cut (ap) Cutting mm 2–4 0.5–2 0.5–3 speed (vc) inch 0.08–0.16 0.02–0.08 0.02–0.12 m/min.
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