Magnobond 6004, Parts A & B
(Formerly Called 81-193)

1. High impact strength. 6004 can be used when rough treatment is encountered.

2. Accurate reproductions. Low shrinkage and low surface tension means faithful duplication of the original master.

1. Mixing the A and B components is a very important part of making a successful tool. The mass cast systems are more difficult to mix than other epoxies because of the differences in specific gravity and viscosity between the A and B components and because of the large quantities mixed at one time. It is very important to scrape down the sides, bottom and blades of the mixing vessel. Extra effort is required during mixing to avoid soft or sticky areas. Mix ratio is critical and must not be changed.

2. Fillers in part A tend to settle on storage. This component must be mixed before removing from the containers. If this is not done, the balance of resin, fillers and curing agent will be upset.

   Mix Ratio:  100 parts by weight A    Compressive Strength
                11 parts by weight B    at 2% Deformation: 15,000 psi
                                                            103 N/mm2


   Color:     Black                     Tensile Strength:  5,000 psi
                                                          34.5 N/mm2

   Viscosity:    A:  400 poises         Impact Strength
                 B:   16 poises         MIL-I-16923G Test
               Mix:  200 poises         Method:  20 ft. lbs.

Specific Gravity:

             A:  2.5
             B:  1.0
           Mix:  2.2
           Approximately 140 lbs. per cu. ft.

1. Preparation. Prepare model and mold frame with release agent. The frame must be thoroughly sealed as 6004 will flow through the most minute openings. Release agent should be applied in a thin but uniform coat. Dow Corning 236 (available from Magnolia Plastics) has been found to be an excellent release coating/sealer for wood and plaster.

2. Surface Coating. Magnolia's Carbide Coat 6019 is suggested for production tooling. Mix thoroughly A and B in the proper ratio. Paint .003 to .006 inch thickness on the master using a stiff brush. Work 6019 hard to get air voids and pockets off the face.

3. Mixing. Mix ratio is 100 parts of 6004A to 11 parts 6004B by weight. Usually 30 to 60 minutes is required. A top to bottom action is necessary. Mix well.

4. Pouring. Pour slowly into one corner of the frame - away from the critical face section. Keep pouring into the corner and allow to flow over the surface. This prevents disturbance of the Carbide Coat (Step 2). Cure at 77°F for 3 to 4 days before pulling. "Filler" should be used to take up space. Ground-up used 6004 tools work well. Many other items can be used here. Re-bars and wire mesh should be used to suspend this filler and add reinforcement.

5. Cure. 6004 is very slow to cure. Large tools (5,000 lbs. +) will develop sufficient exotherm to give a good cure without additional heat. Tools having thin sections should be post cured with the model and model frame in place for support at 150°F for 24 hours prior to use.

            DANGER                            FIRST-AID
--------------------------------     -------------------------
May cause severe irritation.         Eyes - Immediately flush
Do not get in eyes, on skin          eyes with plenty of water
or clothing.                         for at least 15 minutes.
Do not inhale vapors.                Get medical attention.
Wear rubber gloves & aprons.         Skin - Wash immediately
Use with adequate ventilation.       with soap and water.
Wash thoroughly after handling.      Clothing - Remove clothing
For industrial use only.             and wash before reuse.
Keep container closed.
Do not reuse this container.

Spec Sheet Dated: 02/06/96

Sales Division
Magnolia Plastics, Inc.
5547 Peachtree Industrial Boulevard
Chamblee, GA 30341-2296  USA
770-451-2777, Voice
770-451-5376, FAX
800-831-8031, Voice
Email:   sales@magnapoxy.com

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