Hempaprime Multi 500 Winter

PRODUCT DATASHEET

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PRODUCT CHARACTERISTICS

Recommended use

Hempaprime Multi 500 is recommended as a high-build, intermediate coat in high performance coating systems where fast handling and short overcoating times are required. Due to its fast drying – up to twice as fast as comparable products – the product is excellent for projects where fast throughput is key. The product can also be used as self-priming coat and a finishing coat in heavy-duty coating systems. The product is suited for all-year application and can be used at low temperatures down to -10⁰C [14⁰F].
The product is available in MIO shade 12430.

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)
• Meets requirements to ISO 12944 when used as part of a predefined paint system. Part 6, C5 / Im2; Part 9, CX / Im4
• Meets requirements to NORSOK M-501 when used as part of a predefined paint system. Edition 6, System 1, 7B. Edition 7, System 1A, 1B, 7B.

Features

• Fast overcoating
• Crack resistant in high film thickness
• Low VOC
• Ready to use – optimised application properties
• Surface tolerant
• Suitable for immersion as well as atmospheric service
• Can contribute to points for LEED projects (Low-emitting materials, Environmental Product Declarations)

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PRODUCT SAFETY

Flash point

26°C [79°F]

VOC content mixed product

Legislation	Value
EU	192 g/L [1.60 lb/US gal]
US (coatings)	192 g/L [1.60 lb/US gal]
US (regulatory)	192 g/L [1.60 lb/US gal]
China	192 g/L [1.60 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 at 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

• Product code: 45953
• Product components: Base 45959, Curing Agent 95093
• Standard shade / code: Brownish red 50630
• Gloss: Semi-gloss
• Volume solids: 85 ± 2%
• Specific gravity: 1.4 kg/L [12 lb/US gal]
• Reference dry film thickness: 150 micron [6.0 mils]
• Aluminium shade / code: Aluminium grey 19871
• Gloss: Please consult Hempel’s Guideline on aluminium pigmented coatings

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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)
• Stainless steel, aluminium, and other non-ferric metals and alloys: use non-metallic blast media (corundum, garnet, etc.). Sweep blasting to a uniform dense sharp profile, without blank spots
• Remove dust, blast media, and loose materials

Maintenance and Repair

• Spot abrasive blasting to min. PSa 2 (ISO 8501-2) / SP 6 (SSPC)
• Minor areas may be hand or power tool cleaned
• Water jetting to min. Wa 2 (ISO 8501-4)
• Flash rust degree of maximum FR M (ISO 8501-4)
• Feather edges to sound surrounding coating
• Remove dust, blast media, and loose materials

Roughness

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

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APPLICATION

Mixing ratio

Base 45959 : Curing Agent 95093 (4 : 1 by volume)

Thinner

Hempel’s Thinner 08450

Cleaner

Hempel’s Tool Cleaner 99610
Hempel’s Thinner 08450

Pot life

Product temperature	Pot life
10°C [50°F]	2½ hours
20°C [68°F]	1 hour

Application method

Tool	Thinning max vol.	Application parameters
Airless spray	5%	Nozzle pressure: 225 bar [3300 psi], Nozzle orifice: 0.019-0.023″
Brush/Roller	5%	Not Applicable

If brush or roller application is used, more coats will be necessary to achieve the specified dry film thickness.

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FILM THICKNESS

Parameter	Low	High	Recommended
Dry film thickness	100 micron [4.0 mils]	250 micron [10 mils]	150 micron [6.0 mils]
Wet film thickness	117 micron [4.7 mils]	294 micron [12 mils]	176 micron [7.0 mils]
Theoretical spreading rate	8.5 m²/L [346 ft²/gal]	3.4 m²/L [139 ft²/gal]	5.7 m²/L [232 ft²/gal]

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APPLICATION CONDITIONS

• Optimal paint temperature for proper mixing, pumping and spraying is: 20°C [68°F]
• 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 [14°F] during application and curing

Relative Humidity

• Relative humidity must be below 85% during curing

Application remarks

• Product requires heavy duty spray equipment; spray hoses shall be as short as possible
• Metallised surfaces should be overcoated before exposure to open air conditions
• Flash-coat technique is recommended when overcoating porous substrates

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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. Recommended products are: Hempadur, Hempaprime, Hempathane

Drying time

Surface temperature	Touch dry	Surface dry	Hard dry	Fully cured
-10°C [14°F]	13 h	24 h	33 h	—
0°C [32°F]	5½ h	12 h	16 h	—
10°C [50°F]	2½ h	6 h	8 h	—
20°C [68°F]	1 h	3 h	3½ h	7 d

(DFT: 150 micron)

Overcoating

Quality Name	-10°C [14°F]	0°C [32°F]	10°C [50°F]	20°C [68°F]
Atmospheric medium
Hempaprime Multi 500 Winter	Min: 27 h / Max: Ext*	13 h / Ext*	6 h / Ext*	3 h / Ext*
Hempathane HS 55610	Min: 27 h / Max: 40 d	13 h / 40 d	6 h / 40 d	3 h / 20 d
Atmospheric severe
Hempaprime Multi 500 Winter	Min: 27 h / Max: 60 d	13 h / 60 d	6 h / 60 d	3 h / 30 d
Hempathane HS 55610	Min: 27 h / Max: 10 d	13 h / 10 d	6 h / 10 d	3 h / 5 d
Immersion
Hempaprime Multi 500 Winter	Min: 27 h / Max: 60 d	13 h / 60 d	6 h / 60 d	3 h / 30 d

Ext* = Contact Hempel for extended period guidance

Drying conditions

• Maintain sufficient ventilation for drying/curing

Overcoating details

• Roughen surface if max interval exceeded
• Surface must be dry and clean before application

Other remarks

• Epoxy coats may chalk under UV but retain performance
• Hempel’s specification takes precedence over this PDS

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STORAGE

Shelf life

Temperature	Base	Curing Agent
25°C [77°F]	24 months	24 months

Store in unopened containers. Higher storage temp may reduce shelf life. Consult Hempel for guidance.

Storage conditions

• Max 40°C [104°F], no direct sun, no rain/snow exposure

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CARBON FOOTPRINT

DFT	1 µm	1 mil
GWP	5.3 g CO₂e/m²	0.028 lb CO₂e/ft²

Calculated for standard shade. Includes all production, transport, VOCs.

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REFERENCES

Product Data Sheet – Hempaprime Multi 500 Winter
Issued by Hempel A/S – February 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.