Hemucryl 48191

PRODUCT DATASHEET

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Product characteristics

Recommended use
Hemucryl 48191 is recommended as self-primed coating system for new steel and repair and maintenance of old steel-work in moderate corrosive environments up to C3 high. The product may also be applied over abrasive sweep blasted galvanised steel.

Service temperature

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

Certificates / Approvals

• Third-party verified, product-specific Environmental Product Declaration (Type III EPD, ISO 14025, EN 15804)

Features

• Can contribute to points for LEED projects (Low-emitting materials, Environmental Product Declarations).
• Can contribute to credits for BREEAM projects (Indoor air quality, Lifecycle impacts).
• Suited for DGNB System projects.

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Product safety

Flash point
57°C [135°F]

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VOC content

Legislation	Value
EU	35 g/L [0.29 lb/US gal]
US (regulatory)	67 g/L [0.56 lb/US gal]
US (coatings)	35 g/L [0.29 lb/US gal]
China	35 g/L [0.29 lb/US gal]

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

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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

Product code
48191

Standard shade / code
Off white 10170
Wide range of colours is available via Hempel’s tinting system.

Gloss
Flat

Volume solids
52 ± 2%

Specific gravity
1.4 kg/L [11 lb/US gal]

Reference dry film thickness
100 micron [4.0 mils]

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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

• Spot abrasive blasting to min. PSa 2½ (ISO 8501-2) / SP 10 (SSPC).
• Minor areas can be cleaned by power tool to St 2 provided the surface is roughened and not polished.
• Remove dust, blast media and loose materials.

Roughness

• Surface profile Medium (G) (ISO 8503-2)

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
Hempel’s Cleaner 98701

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Application method

Tool	Thinning max vol.	Application parameters
Airless spray	3%	Nozzle pressure: 130 bar [1900 psi]

                                  Nozzle orifice: 0.015-0.019"       |

| Brush | 3% | Not Applicable |

If brush or roller application is used, more coats will be necessary to achieve the specified dry film thickness. For brush or roller application use Hemucryl Brush Agent 99810. 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

Specification	Dry film thickness	Wet film thickness	Theoretical spreading rate
Low	75 micron [3.0 mils]	145 micron [5.8 mils]	6.9 m²/L [281 sq ft/US gal]
High	160 micron [6.4 mils]	309 micron [12 mils]	3.2 m²/L [130 sq ft/US gal]
Recommended	100 micron [4.0 mils]	193 micron [7.7 mils]	5.2 m²/L [212 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. Overthickness must be closely controlled and never locally exceed 220 micron [8.8 mils] DFT. On irregular surfaces it is recommended to employ special care in avoiding over application.

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Application conditions

• Surface temperature must be above 10°C [50°F] during application and curing.
• 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.

Relative Humidity:

• Relative humidity must be below 80% during application.
• Relative humidity must be in the range 40–80% during curing.

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Drying and overcoating

Product compatibility

• Previous coat: None or according to Hempel’s specification.
• Subsequent coat: None or according to Hempel’s specification.

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Drying time

Surface temperature	Surface dry min	Through dry min
20°C [68°F]	60 min	90 min

Determined for dry film thickness 100 micron [4.0 mils] at standard conditions, see Hempel’s Explanatory Notes for details.

Overcoating
Consult Hempel’s specification for more information.

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

Shelf life from date of production, when stored in original, unopened containers. Thereafter, the product quality must be re-inspected. Storage at elevated temperatures may reduce shelf life. For advice, please consult Hempel.

Storage conditions

• Temperature must not go below 5°C [41°F] during transport and storage.

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Carbon Footprint

Dry film thickness	1 µm	1 mil
GWP (Global Warming Potential)	6.7 g CO₂e/m²	0.035 lb CO₂e/ft²

The carbon footprint is for 1 square meter / square foot of surface area with a dry film thickness of 1 micron / mil.
The scope includes raw materials, in-bound transport to the Hempel factory, Hempel manufacturing processes, and any Volatile Organic Compounds emitted during and after the application of the product.
It is calculated based on the standard shade defined in this PDS. Values may vary with shade.

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References

Product Data Sheet – Hemucryl 48191
Issued by Hempel A/S – May 2025
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.