Hempaprime Multi 500 Summer

PRODUCT DATASHEET

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PRODUCT CHARACTERISTICS

Recommended use

Hempaprime Multi 500 Summer 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 a self-priming, surface tolerant coat and a finishing coat in heavy-duty coating systems.

Service temperature

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

Features

• Fast overcoating.
• Crack resistant in high film thickness.
• Low VOC.
• Suited for application in hot climates due to long pot life.
• Surface tolerant.

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PRODUCT SAFETY

Flash point

25°C [76°F]

VOC content mixed product

Legislation	Value
EU	200 g/L [1.67 lb/US gal]
US (coatings)	200 g/L [1.67 lb/US gal]
US (regulatory)	200 g/L [1.67 lb/US gal]
China	200 g/L [1.67 lb/US gal]

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

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: 45952
• Product components: Base 45959, Curing Agent 95092
• Standard shade / code: Venetian Red 50630 *
• Wide range of colours is available via Hempel’s tinting system
• Gloss: Semi-gloss
• Volume solids: 85%
• Specific gravity: 1.4 kg/L [12 lb/US gal]
• Reference dry film thickness: 150 micron [6.0 mils]
• Micaceous iron oxide (MIO) shade / code: Reddish Grey MIO 12430
• Volume solids (MIO): 85%
• Specific gravity (MIO): 1.6 kg/L [13 lb/US gal

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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-ferrous metals: 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 instead of abrasive blasting.
• Water jetting to min. Wa 2 (ISO 8501-4).
• Flash rust degree of maximum FR M (ISO 8501-4).
• Stainless steel, aluminium and other non-ferrous metals: use non-metallic blast media (corundum, garnet, etc.). Sweep blasting to a uniform dense sharp profile, without blank spots.
• 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 95092 (4 : 1 by volume)
Stir well before use.

Thinner

Hempel’s Thinner 08960 / 08450

Cleaner

Hempel’s Thinner 08450 / Hempel’s Tool Cleaner 99610

Pot life

Product temperature	Pot life
20°C [68°F]	2 hours
30°C [86°F]	1½ hours
40°C [104°F]	1 hour

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APPLICATION METHOD

Tool	Thinning max vol.	Application parameters
Airless spray	5%	Nozzle pressure: 225 bar [3300 psi], 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 (DFT)	100 micron [4.0 mils]	250 micron [10 mils]	150 micron [6.0 mils]
Wet film thickness (WFT)	118 micron [4.7 mils]	295 micron [12 mils]	177 micron [7.1 mils]
Theoretical spreading rate	8.5 m²/L [346 sq ft/US gal]	3.4 m²/L [139 sq ft/US gal]	5.7 m²/L [232 sq ft/US gal]

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Application conditions

– Optimal paint temperature for proper mixing, pumping and spraying is: 25°C [77°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.

Relative Humidity:

– Relative humidity must be below 85% during application.
– 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

Drying time

Temp.	Touch dry	Surface dry	Hard dry	Through dry	Fully cured
20°C [68°F]	90 min	3 h	4½ h	—	—
30°C [86°F]	60 min	1¼ h	1¾ h	4 h	4 d
40°C [104°F]	30 min	¾ h	1 h	—	—

Overcoating

Quality name	20°C [68°F]	30°C [86°F]	40°C [104°F]
Hempaprime Multi 500 Summer	Min 4 h / Max Ext*	2½ h / Ext*	2 h / Ext*
Hempathane HS 55610	Min 4 h / Max Ext*	2½ h / Ext*	2 h / Ext*

Ext*: Extended period; consult Hempel for advice.

Overcoating times are indicative for products of the same generic chemistry.

Drying conditions

• Ensure sufficient ventilation.

Overcoating details

• Roughen if max interval exceeded.
• Surface must be dry and clean.

Other remarks

• Epoxy coatings chalk outdoors; performance unaffected.
• Hempel’s Specification overrides this PDS.

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STORAGE

• Storage conditions
  – Product must be stored according to local legislation, at maximum 40°C [104°F], without direct sunlight and protected from rain and snow.

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CARBON FOOTPRINT

Dry film thickness	1 µm	1 mil
GWP	5.5 g CO₂e/m²	0.029 lb CO₂e/ft²

Covers raw materials, transport, manufacturing, VOCs emitted during/after application.

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REFERENCES

Product Data Sheet – Hempaprime Multi 500 Summer
Issued by Hempel A/S – March 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