HyProBlack Hexavalent chrome free RoHS and ELV compliant. HyPro System

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1 HyProBlack 2020 HyPro System HyProBlack 2020 is trivalent black passivate for zinc that provides 120 hours to white corrosion when sealed with HyPro 200 or HyPro 280 COF Provides glossy, uniform, deep black color Use over chloride, alkaline, and alloyed zinc Easily fits into current chromating operation Wide operating parameters Hexavalent chrome free RoHS and ELV compliant PAVCO, Inc John Crosland Jr Drive Charlotte, NC Phone: Toll-free: or PAVCO INC ( ) Fax: Order Fax (for orders only)

2 Operating Parameters: Range Optimum Over Chloride Zinc HyProBlack 2020 A 5-12% 7% HyProBlack 2020 B 5-12% 7% % 1% ph Temperature F (21-32 C) 80 F Immersion time seconds 30 seconds Over Alkaline Zinc HyProBlack 2020 A 5-12% 7% HyProBlack 2020 B 5-12% 7% % 0.5% ph Temperature F (21-32 C) 80 F Immersion time seconds 30 seconds Typical Cycle: 1 Zinc plate with Pavco proprietary process to a minimum thickness of 8 microns 2 Double counter flow rinse the work. 3 Activate the work using 1.0% Pavco s Zinc Dip Liquid, dip time of 20 seconds. Zinc Dip liquid is absolutely necessary for a consistent passivate conversion coating. 4 Rinse 5 Passivate the work with HyProBlack 2020 per the above parameters 6 Rinse 7 Seal the passivate with HyPro 200 or HyPro 280 COF 8 Dry at a minimum temperature of 140 F (60 C), maximum of 180 F (82 C).. Equipment: Tank: Agitation: Ventilation: Temp. Control Dipping Baskets: A regular steel tank lined with PVC, Koroseal, or fiberglass Air agitation is mandatory. Recommended, comply with local regulations. Teflon heaters are recommended Polypropylene baskets only. Steel or stainless steel baskets cannot be used. 2

3 Bath Make Up Per 100 Gallons (378.5 l): 1. Add 75 gallons (280 liters) of de-ionized water. 2. Mixing well, add 7 gallons (26.5 liters) of HyProBlack 2020 A 3. Add 7 gallons (26.5 liters) of HyProBlack 2020 B 4. Add 1 gallons (3.7 liters) of 5. Bring the volume to the final working level with de-ionized water. 6. Adjust ph with sulfuric acid if necessary Analytical Procedures: Reagents 1. Sodium hydroxide 2. 30% hydrogen peroxide 3. 1:1 sulfuric acid 4. 10% potassium iodide 5. Starch solution N sodium thiosulfate Titration Procedure for HyProBlack 2020 A: 1. Pipette a 10 ml bath sample of HyProBlack 2020 A into a 250 ml Erlenmeyer flask 2. Add 100 mls de-ionized water. 3. Add 2 grams of sodium hydroxide to the flask and swirl until dissolved. 4. Add 2 mls of 30% hydrogen peroxide. 5. Boil for at least 30 minutes. (Important) 6. Cool to room temperature. 7. Filter through #41 filter paper (note: be sure to rinse all chrome through filter paper prior to proceeding). 8. Add 10 mls of 1:1 sulfuric acid. 9. Add 5 mls of 10% potassium iodide. 10.Titrate with 0.1 N standard sodium thiosulfate to a straw color which persists for 30 seconds. 11. Add 2 mls of starch solution. 12. Continue titration until the dark blue color disappears. Calculation: % HyProBlack 2020 A = mls. of sodium thiosulfate x Titration Procedure for HyProBlack 2020 B: 1. Pipette a 25 ml bath sample of HyProBlack 2020 B into a 250 ml Erlenmeyer flask 2. Add 75 mls de-ionized water. 3. Add 4 ml concentrated sulfuric acid (8 ml of 50%) 4. Add 3-6 drops Ferroin Indicator. 5. Titrate with 0.1N Ceric Sulfate from orange-yellow to blue-green endpoint. Calculation: % HyProBlack 2020 B = mls 0.1N Ceric Sulfate x Analytical Procedures: Bath Analysis by AA HyProBlack 2020 A, analyzing for chromium: Calculation: % HyProBlack 2020 A = ppm Chromium X 260 3

4 Maintenance of the Solution: HyProBlack 2020 A & B Maintain by analysis After the initial add of, additions are only needed as the zinc metal climbs in the bath. For every 5000ppm of zinc dissolved, add 0.1% Troubleshooting Guide for HyProBlack 2020 Process: Suggestions prior to running production work- Always run simulation off line with small amount of working passivate bath. Do not use topcoat when troubleshooting. Set immersion time at seconds. If making a new solution, start at the optimum level of Part A. Start with the low end of Part B Make-up. When adjusting ph up, use dilute caustic added slowly; never raise above 3.5. Problem Cause Correction Parts are black with some green & red iridescence- Passivate film cannot be rubbed off after drying Ideal passivate conditions None. Make similar adds to line & incorporate topcoat Passivate taking too slow Low Part A Increase Part A in 1% increments Parts are not black have rainbow color Low temperature No agitation Low Part B ph too high Raise temperature Use mild air agitation Parts have powdery look Part A too high Cut passivate Passivate film can be rubbed after drying ph too low Temperature too high Part B too high ph too low Agitation too high Increase Part B in 1 % increments Adjust with sulfuric acid to Raise ph Lower Temperature Cut passivate Adjust with dilute caustic to Reduce agitation 4

5 Waste Treatment: Dispose of the concentrates or solutions thereof according to local waste treatment regulations. Safety: Handling Pavco mandates that the following safety equipment be used when handling chemicals in an electroplating environment: safety glasses, face shield, plastic or rubber apron, rubber gloves and safety shoes. Chemicals should only be handled by trained and experienced personnel. Storage Store Pavco products in a clean, well ventilated room which temperature remains above 45 F (7 C). Pavco products should remain in their original container with the lid or cap tightened. Drum pumps or pails must be clean prior to dispensing Pavco products to prevent contamination. If any HyProBlack 2020 product freezes during shipment or storage, warm the product and mix it well before use. Emergency Procedures Refer to the MSDS for detailed emergency procedures. Eye Contact Seek immediate medical attention. Flush the eyes with water for 15 minutes. Skin Contact Remove all contaminated clothing. Wash the skin with soap and water. Seek medical attention. Inhalation Remove the person to an area with fresh air. Seek medical attention if necessary. Ingestion Seek immediate medical attention. Spill Dike the area to contain the spill. Refer to the MSDS for clean-up. Notify the proper authorities if required. *NOTE: Refer to the MSDS for detailed emergency medical procedures. Product Description and Shipping: HyProBlack 2020 A (ZC228) is a purple liquid with a specific gravity between 1.1 and 1.2. HyProBlack 2020 B (ZC328) is a pale yellow or light green liquid with a specific gravity between 1.06 and 1.13 and a ph less than 3.0 All products are available in 5 gallon containers or 55 gallon drums. Revision Date: 5/27/2015 Revision Number: WARRANTY AND DISCLAIMER Technical information and recommendations contained herein are believed to be reliable, however, the accuracy or completeness thereof is not guaranteed. No statement or recommendation shall constitute a representation unless set forth in an agreement in writing by the seller and manufacturer. NO WARRANTY OR MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE IS MADE. The following warranty is made in lieu of any other warranties, express, implied, or statutory. Products are warranted to be free from defects on material and workmanship at the time sold. The sole obligation of the seller and manufacturer under this warranty shall be to replace any product defective at the time sold. Under no circumstances shall the manufacturer or seller be liable for any loss, damage, expense, direct or consequential, arising out of the use of or inability to use the product. Materials shall not be returned to the seller or manufacturer without express written permission. No information or suggestions given by us shall be deemed to be a recommendation to use any product in conflict with any existing patent rights. 5