Hemucryl 48120

PRODUCT DATASHEET

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Product characteristics

Recommended use
As a direct-to-metal coat in water-borne paint systems, i.e. under bridges.

Service temperature

• Maximum, dry exposure only: 120°C [248°F]

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Product safety

Flash point
65°C [149°F]

VOC content

Legislation	Value
EU	93 g/L [0.78 lb/US gal]
US (regulatory)	180 g/L [1.50 lb/US gal]
China	93 g/L [0.78 lb/US gal]

VOC values may vary with shade. Please consult the Safety Data Sheet, section 9.
According to specific legislation, see details in the Explanatory Notes available at Hempel website, hempel.com or your local Hempel website.

Handling
Handle with care.
Before and during use, observe safety labels on packaging and paint containers and follow all local and national safety regulations.
Always consult Hempel’s Safety Data Sheet for this product along with the Product Data Sheet.
For professional use only.

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Product data

Parameter	Value
Product code	48120
Standard shade / code	Brownish red 51320
Gloss	Semi-gloss
Volume solids	42 ± 2%
Specific gravity	1.2 kg/L [10 lb/US gal]
Reference dry film thickness	80 micron [3.1 mils]

Other shades are available; please contact your local Hempel representative.

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Surface preparation

Cleanliness

• Remove oil, grease, and other contaminants by suitable detergent cleaning.
• Remove salts, detergents, and other contaminants by high pressure fresh water cleaning.

New build

• Abrasive blasting to min. Sa 2½ (ISO 8501-1) / SP 10 (SSPC)
• Remove dust, blast media, and loose materials

Maintenance and Repair

• According to Hempel’s Specification.

Consult Hempel’s separate Surface Preparation Guidelines for more details.

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Application

Mixing ratio
Stir well before use.

Thinner
Fresh water

Cleaner
Fresh water

Application method

Tool	Thinning max vol.	Application parameters
Airless spray	5%	Nozzle pressure: 180 bar [2600 psi], Nozzle orifice: 0.015–0.019″
Brush	Not Applicable
Roller	Not Applicable

If brush or roller application is used, more coats will be necessary to achieve the specified dry film thickness.
Spray data are indicative and subject to adjustment. Pressure is for a material temperature of 20°C [68°F].

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Film thickness

	Low	High	Recommended
Dry film thickness	60 micron [2.4 mils]	120 micron [4.7 mils]	80 micron [3.1 mils]
Wet film thickness	150 micron [6 mils]	275 micron [11 mils]	190 micron [7 mils]
Theoretical spreading rate	7.1 m²/L [290 sq ft/US gal]	3.5 m²/L [140 sq ft/US gal]	5.3 m²/L [220 sq ft/US gal]

Product may be specified in another film thickness than indicated depending on purpose and area of use.
This will alter spreading rate, drying and curing time, and overcoating interval.
For best performance, avoid excessive film thickness.

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Application conditions

• To avoid condensation, apply on a clean and dry surface with a temperature that is at least 3°C [5°F] above the dew point
• Surface temperature must be above 10°C [50°F] during application and curing

Relative Humidity

• Must be in the range 40–80% during curing

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Drying and overcoating

Product compatibility

• Previous coat: According to Hempel’s Specification
• Subsequent coat: None

Drying time

Surface temperature	Touch dry min	Surface dry min	Hard dry min	Through dry hours	Fully cured days
20°C [68°F]	18 min	50 min	100 min	14 h	7 d

Determined for dry film thickness 80 micron [3.1 mils] at standard conditions.
See Hempel’s Explanatory Notes for details.

Drying conditions

• To obtain the drying time stated, it is important to maintain sufficient ventilation during application, drying, and curing
• Condensation on the freshly applied coating should be avoided

Overcoating details

• The surface must be dry and clean prior to application

Other remarks

• Hempel’s Specification supersedes any recommendations given in the Product Data Sheets

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Storage

Shelf life

Ambient temperature	Product
25°C [77°F]	12 months
35°C [95°F]	12 months

Shelf life from date of production, when stored in original, unopened containers.
Thereafter, the product quality must be re-inspected.
Always check the best before date or expiry date on the label.

Storage conditions

• Product must be stored according to local legislation
• Store at maximum 40°C [104°F], without direct sunlight and protected from rain and snow
• Temperature must not go below 5°C [41°F] during transport and storage

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References

Product Data Sheet – Hemucryl 48120
Issued by Hempel A/S – November 2021
Document Version: 4/4
Source: https://www.hempel.com

Technical Guidelines and Explanatory Notes
Last accessed: 28 May 2025
Reference link: https://www.hempel.com/service-and-support/technical-guidelines

Note: Always consult the latest version of the Product Data Sheet and associated documents directly from Hempel’s official website to ensure accuracy and compliance with the most current recommendations.