DP-51 - RED DYE PENETRANT

Ambient Temperature Products (aerosols), Red Dye Penetrant for the Aerospace Industry DP-51 Type 2 Method A

MANUFACTURER : SHERWIN (USA)/NDT Europa (NL)

DISTRIBUTOR: NDT Consultants Limited (UK)

FEATURES:

Method A (water washable) and Method C (solvent removable) red dye penetrant, as per SAE-AMS 2644 ans ISO 3452-2 (May 2000 issue) standard.

COMPANION MATERIALS:

Degreaser : N 120, N106A, DR 60, DR 62
Wet developer D 100, R 60, R 62.

SPECIFICATIONS / STANDARDS:
SAE-AMS 2644, QPL 2644-1
ASTM E 1417

DATA:

This high sensitivity penetrant is very low in sulfur, fluorine, chlorine, bromine.
Flash point : > 99°C (> 200°F).
Compatible with any metal and some synthetic materials.

PACKAGING / TRANSPORT / STORAGE:

Packaging:

1, 5, 10, 60, 200 Liters can
400 ml spray cans.
Transport / Handling:

refer to MSDS (material safety data sheet)
Storage / Shelf life:

Keep away from moisture
Temperature range : 0 to + 50° C (+32°F to 122°F)
Shelf life: 48 months.

INSTRUCTIONS:
-Surface must be free of contaminants, even inside flaws. Use adequate methods to remove oxides, paints, oils, water, etc…
-Prior to applying penetrant, wipe out with degreaser N 120 or DR 60 and rags. Allow 2 minutes for complete evaporation.
-Apply penetrant by any adequate means (spraying, brushing, flowing, dipping, etc…)
-Dwell time: 20 minutes are recommended. Dwell time may be shortened down to 10 minutes when only large cracks are sought for, or extended up to several hours for tight cracks.
-Excess of penetrant removal: This is a delicate operation. Remove the excess penetrant from the surface, being careful not to remove the penetrant tapped in the defects. DP 51 is easy to wash off with sprayed water; never dip the parts in water. Rinse under low pressure (30 to 150 kPa /5 to 20 psi), with the nozzle of gun 30 to 40 cm (12” to 16”) from the part, during the shortest time possible, until the red background disappears. If a red background remains on particularly coarse parts, clean it off with a N 106A wipe or DR 60, then rinse again within 30 seconds. If you can’t or don’t want to use water, carry out the following procedure (and not any other).
- Wipe off the excess of penetrant from the surface using N 106A wipe or DR 60.
- Wipe again with clean cloths, until the red background disappears.
-Drying: After rinsing, dry either through natural evaporation, or preferably through hot air circulation (80°C/180°F maximum). If you wipe the part, do so with clean rag that are not too absorbing, preferably by dabbing the part. Applying the developer : when moisture has evaporated, apply one of the mentioned developers (spray only).
-Inspection : Some 10 minutes after the developer has dried, you may inspect the part : the defects appear on the white background in the form of red spots (blowholes, porosities, etc..) or red lines (cracks, defective welds, shocks, etc..). Longer development time (30 minutes, and even perhaps several hours) can allow you to detect extremely small defects.

HEALTH AND SAFETY: refer to MSDS.
The information given herein is given in good faith to our customers for the sole purpose of assisting them in the use of the products. The document contains no formal or implicit guarantee regarding its use. NDT Consultants Limited cannot be held responsible for damages of any nature resulting from information provided in this document. In addition, none of the information which the document contains should be interpreted as a recommendation for the use of the products which would infringe the protected rights of industrial property.

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