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HM-3A
MANUFACTURER
: SHERWIN (USA)/NDT Europa (NL)
DISTRIBUTOR: NDT Consultants
Limited (UK)
DESCRIPTION / APPLICATION(S):
Level 2 water washable fluorescent penetrant designed for detecting
surface defects.
COMPANION PRODUCT:
DR 60, DR 62 removers
N 120 degreaser / N 106 A,
D 100, D90G developer
R 62 quick-drying developer
SPECIFICATIONS / STANDARDS:
SAE-AMS 2644-QPL 2644-1 approved
Type 1 Method A Level II
PMUC-approved (Produits et Matériaux Utilisables en Centrales, i.e.
Products and Materials that can be Used in Nuclear Plants)
Mc DONNEL/DOUGLAS: grade 3
ALLISON: level 2
TURBOMECA: classe W 2
SNECMA: sensitivity S2
AIRBUS-EADS : Type I, Method A, Level II
ROLLS ROYCE: RPS 702 –F1B TSD 594 – 213 standard
BOEING, LOOKHEED,GENERAL ELECTRIC: in accordance with AMS 2644 – QPL
2644-1
DASSAULT: Type I, Method A, Level II
PRATT & WHITNEY: PMC NO 4350-3
CFMI: product code CP 33.03
PHYSICO-CHEMICAL PROPERTIES:
Aspect: green liquid
Fluorescence: green-yellow
Flash point: > 93°C.
Viscosity: 7 mm²/s ± 15 % at 40°C.
Density: 0.872 ± 0.020
Water tolerance: > 5 %
Performance: >75 % on a 10 µm test block
Very low halogen and sulfur content
PACKAGING / SHIPPING / STORAGE:
Packaging:
1-, 5-, 10-liter canisters
60-liter drum
200-liter drum
300-ml spray can
Shipping / Handling:
refer to MSDS
Storage / Shelflife:
keep away from moisture
Temperature limit : 0 à 50°C.
Keep the packaging closed after taking out some of the product
Canister / Drum : 48 months
Spray can : 48 months
INSTRUCTIONS:
(These 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-3A 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 five minutes will suffice. When particularly tight cracks are
suspected, or the part is especially critical, the dwell time may be
extended to 30 minutes, or longer. Do not soak the part. To increase
sensitivity, as well as conserve material, allow the penetrant to drain
from the part surface back into the penetrant tank.
3. Removal: Use a quick, ambient temperature water wash at tap
pressure to rinse HM-3A from the part surface. To avoid washing
entrapped penetrant from surface flaws, do not use high water pressures
and temperatures, or prolonged washing and scrubbing.
4. Drying: A recirculating oven set no higher than 160°F (71°C)
is suggested. Leave part in oven just long enough to evaporate surface
moisture. Drying is improved by using pressurized air to disperse and
remove as much excess water as possible before placing part in oven.
5. Developing: HM-3A is self developing. Nevertheless it is
recommended to use a developer as listed above.
6. Inspection : Inspect parts under appropriate UV-A radiation and
dimmed visible light, in accordance with ISO 3059-2001 standard.
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.
Download HM-3A Technical Data Sheet
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