Hempadur Avantguard 750 Pro

Product characteristics

Recommended use
Hempadur Avantguard 750 Pro is recommended for long-term protection of steel in severely corrosive environments. The product is suitable for maintenance. Its high solids content makes it the perfect choice for projects where low VOC is key.

Service temperature:

• Maximum, dry exposure only: 160°C [320°F].

---

Certificates / Approvals

• Meets requirements to NORSOK M-501 when used as part of a predefined paint system. Edition 7, System 1B.
• Meets requirements to ISO 12944 when used as part of a predefined paint system. Part 6 1,56 x C5VH.
• Meets requirements to ISO 12944 when used as part of a predefined paint system. Part 9 CX.

---

Features

• Reduces the effect of corrosion and provides excellent galvanic protection.
• Fast drying primer with short minimum overcoating intervals.
• Superior tolerance to high relative humidity during application.
• Cures down to -10°C [14°F].
• Low VOC.

---

Product safety

Flash point: 29°C [84°F]

VOC content mixed product

Legislation	Value
EU	244 g/L [2.04 lb/US gal]
US (coatings)	244 g/L [2.04 lb/US gal]
US (regulatory)	244 g/L [2.04 lb/US gal]
Canada	244 g/L [2.04 lb/US gal]
China	244 g/L [2.04 lb/US gal]
Hong Kong	244 g/L [2.04 lb/US gal]
Korea	244 g/L [2.04 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. Observe all safety instructions. Always consult the Safety Data Sheet before and during use.
For professional use only.

---

Product data

• Product code: 1737G
• Product components: Base 1737U, Curing Agent 98371
• Standard shade / code: Dark grey 10420 (*Other shades available on request)
• Gloss: Flat
• Volume solids: 76 ± 2%
• Specific gravity: 2.4 kg/L [20 lb/US gal]
• Reference dry film thickness: 60 micron [2.4 mils]

---

Surface preparation

Cleanliness

• Remove oil, grease and other contaminants by suitable detergent cleaning.
• Remove salts, detergents, contaminants and marine growth 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

• Abrasive blasting to min. Sa 2 (ISO 8501-1) / SP 6 (SSPC).
• Water jetting to Wa 2½ (ISO 8501-4).
• Flash rust degree of maximum FR M (ISO 8501-4).
• Feather edges to sound surrounding coating.
• Minor areas can be cleaned by power tool to St 2 or St 3 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.

---

Application

Mixing ratio
Base 1737U : Curing Agent 98371 (89 : 11 by volume)

Products containing floating or settling particles/pigments need to be continuously stirred during application. Especially important in case of heavy thinning.

Thinner

• Below 20°C [68°F]: Hempel’s Thinner 08960
• Above 20°C [68°F]: Hempel’s Thinner 08450

Cleaner

• Hempel’s Tool Cleaner 99610

---

Pot life

Product temperature	Pot life
0°C [32°F]	3 hours
20°C [68°F]	2 hours
40°C [104°F]	¾ hours

---

Application method

Tool	Thinning max vol.	Application parameters
Airless spray	10%	Nozzle pressure: 220 bar [3200 psi], nozzle: 0.017–0.021″
Brush/Roller	10%	Not Applicable

More coats may be needed for full film build with brush/roller.

---

Film thickness

Specification range	DFT	WFT	Theoretical spreading rate
Low	50 µm [2.0 mils]	66 µm [2.6 mils]	15 m²/L [611 sq ft/US gal]
High	100 µm [4.0 mils]	132 µm [5.3 mils]	7.6 m²/L [310 sq ft/US gal]
Recommended	60 µm [2.4 mils]	79 µm [3.2 mils]	13 m²/L [530 sq ft/US gal]

Overthickness must be controlled and not exceed 200 µm locally.

---

Application conditions

• Product temperature must be above 15°C [59°F]
• Apply on surfaces at least 3°C [5°F] above dew point
• Surface temperature: -10°C to 50°C [14°F to 122°F]
• Relative humidity: below 95% during application and curing

---

Drying and overcoating

Product compatibility

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

Drying time

Surface temperature	Touch dry (min)	Hard dry (h)	Fully cured (days)
-10°C [14°F]	120	8½	–
0°C [32°F]	60	5½	–
20°C [68°F]	15	2½	7
40°C [104°F]	5	1	–

---

Overcoating

Quality name	-10°C	0°C	20°C	40°C
Atmospheric medium
Hempaprime Multi 500	4 h / Ext*	2 h / Ext*	60 min / Ext*	30 min / Ext*
Hempathane HS 55610	4 h / 56 d	2 h / 42 d	60 min / 14 d	30 min / 3½ d
Atmospheric severe
Hempaprime Multi 500	4 h / 90 d	2 h / 90 d	60 min / 30 d	30 min / 7 d
Hempathane HS 55610	4 h / 20 d	2 h / 15 d	60 min / 5 d	30 min / 28 h

Ext* = extended depending on exposure conditions – contact Hempel for advice.

---

Drying conditions

• Ensure proper ventilation
• Avoid condensation on freshly applied coating

---

Overcoating details

• If maximum interval is exceeded, roughening is required
• Remove zinc salts or contaminants
• Surface must be clean and dry

---

Other remarks

• Hempel’s Specification overrides all PDS suggestions

---

Storage

Ambient temperature	Base	Curing Agent
25°C [77°F]	12 months	36 months

Store in original, unopened containers. Quality must be rechecked after expiry.

---

Carbon Footprint

Thickness	GWP (CO₂e)
1 µm	18 g CO₂e/m²
1 mil	0.093 lb CO₂e/ft²

Includes raw materials, transport, production, and VOCs. Values may vary by shade.

---

References

Product Data Sheet – Hempadur Avantguard 750 Pro
Issued by Hempel A/S – April 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