Sherwin HM-430 Fluorescent Water-based Penetrant Level 3 (HM-430)

HM-430 is a medium-high sensitivity, water-washable fluorescent
penetrant for inspecting castings, extrusions, and similar parts. Designed for dip tank
use with good self-developing properties. HM-430 is a versatile, general purpose penetrant for use on a variety of materials, including aluminum and magnesium castings. Compiles with low-sulfur and low halogen requirements. OSHA Class IIIB material. Flash point over 200°F.

Special Features:

HM-430 is fully approved and proven. It is formulated to give low background fluorescence on rough
surfaces. Has been called "the four wheel drive penetrant for rough terrain.
HM-430 qualifies under the strict requirements of MIL·l-25135 Revisions D & E as well as AMS-2644. The Sherwin laboratory was the first to recognize the need for high flash point, stable, nonvolatile, low toxicity penetrants.
HM-430 is a proven production material.
1. Low to near zero background for assured indication visibility.
2. Sharp, precise flaw indications for rapid interpretation.
3. Excellent electrostatic spray capability.
4. Long material tank life due to formula stability and nonvolatility. ·
5. Low material consumption (low drag out) due to low viscosity.
6. Clean, relatively odorless product; vapor free atmosphere.
7. Recognized and accepted as a low toxicity material by health authorities.
8. Use without developers where specifications permit.
HM·430 meets all military and applicable commercial specifications. Full conformance certification complying with MlL-STD·6656 and other applicable governmental and commercial documentation specifications are provided with each shipment.

Companion Materials:
Developers-
Sherwin D-90G Dry Powder (form a)
Sherwin D-100 Nonaqueous (form d)
Sherwin D-106 Nonaqueous (form d)
Sherwin D-110A.1 Nonaqueous (form c)
equivalent QPL·25135 developers
Removers-
Sherwin DR-60 (Class 2)
Sherwin DR-62 (Class 2)
equivalent OPL·25135 removers

Basic Instructions: (These instructions describe the basic process, but they may need to be amended by the user to comply with applicable specifications and/or inspection criteria provided by the contracting agency.)

1. Application: Apply HM-430 only to clean, dry surfaces by spraying. flowing,
brushing or dipping.
2. Dwell-Time: A 10 minute dwell time is suggested, although in many cases 5
minutes will sullice. Whe particularly tight cracks are suspected, or the pan is
especially critical, the dwell time may be extended to 30 minutes, or longer.