FM ALLOY ® Mold Steel for Plastic with Corrosion Resistance and Mirror nish-ability PROVA Series

Mold Steel for Plastic with Corrosion Resistance and Mirror nish-ability PROVA Series The PROVA series are high quality stainless steels that are the best for molds on plactic molding. Features • Excellent mirror nish-ability. • Good machinability. • Superior corrosion resistance. • Good wear resistance. • Small deformation by heat treatment. • Materials can be provided as already hardened (32HRC).

PROVA Series characteristics Mirror finish-abilityPROVA-400 PROVA series have minimum non-metallic inclusions to show superior mirror like nish. Example: Polishing the mold for a cellular phone enclosure to a mirror nish Surface after polishing PROVA-400 pinholes Surface after polishing Equivalent material in market 0.1 0.1 Sample hardness: 53 HRC, Polishing condition: #1,500 Emery paper Diamond compound (#2,000 #3,000 #5,000) Mirror surface polishing procedure (example) Oil stone (using kerosene) 180 240 320 Sandpaper (using kerosene) 600 800 1,000 Diamond compound 1,200 1,800 400 3,000 600...

MachinabilityPROVA-400 Optimized design of components in PROVA series gives it superior machinability, which reduces tool costs and improves automation. Results of test for machinability with ball endmill Condition Equivalent material B in market Cutting tool (Ball endmill): NACHI GS Mill Ball R3 x 9 x 80 x 6 2GSR3 Cutting speed at cutting point: 42 m/min (RPM: 7900 min-1) Wear on cutting edge (mm) 0.10 Feed: 920 mm/min (feed rate 0.058 mm/t) Cutting Depth: cutting depth aa = 0.12 mm x 2 passes, pick feed Pf = 0.3 mm Cutting Fluid: Water soluble emulsion PROVA-400 Equivalent material A in market...

PROVA Series characteristics Corrosion resistance (PROVA-400, 500) PROVA Series are superior for corrosion resistance. 1.0 Corrosion weight loss ratio Corrosion weight loss ratio 1.0 0.8 0.6 0.4 0.6 0.4 0.2 0.0 PROVA-400 Equivalent material A in market Good Good 0.2 0.8 Equivalent material B in market 0.0 PROVA-500 Test reagent: 5% sulfuric acid Temperature: 40°C Immersion time: 5hrs SUS440C 8Cr grade Test reagent: 10% sulfuric acid Temperature: 40°C Immersion time: 4hrs Cleanliness (PROVA-400, 450) PROVA series has dramatically reduced non-metallic inclusions. A sulde Grade Non-metal inclusions...

PROVA Series heat treatment Heat treatment conditions Hardening Tempering Grade Demand properties Pre-heat (˚C) Austenitizing (˚C) Temperature (˚C) Hardness (HRC) 200 400 820 860 Corrosion resistance / Low age-deformation 51 53 Avoid breaking at electric discharging 60UP Corrosion resistance / Low age-deformation 500 550 PROVA-500 51 53 150 200 600 850 Avoid breaking at electric discharging 490 510 PROVA-450 51 53 200 400 600 850 Corrosion resistance / Low age-deformation 490 510 PROVA-400 51 53 58UP Avoid breaking at electric discharging 1,000 1,050 1,000 1,050 1,070 1,120 Dimensional distortion...

NACHI-FUJIKOSHI CORP. Tokyo Head Office : Shiodome Sumitomo Bldg. 17F 1-9-2 Higashi-shinbashi, Minato-ku, Tokyo 105-0021, JAPAN Toyama Head Office : 1-1-1 Fujikoshi-Honmachi, Toyama 930-8511, JAPAN Tel:+81-(0)76-423-5111 Fax:+81-(0)76-493-5211 Overseas Companies • NACHI AMERICA INC. HEADQUARTERS 715 Pushville Road, Greenwood, Indiana, 46143, WEST COAST BRANCH 12652 E. Alondra Blvd. Cerritos, California, 90703, MIAMI BRANCH - LATIN AMERICA DIV. • NACHI ROBOTIC SYSTEMS INC. 22285 Roethel Drive, Novi, Michigan, 48375, 89 Courtland Ave., Unit 2, Concord, Ontario, Urbina No 54, Parque Industrial Naucalpan,...