What is the mix ratio for Carboweld 17 FG?

Carboweld 17 FG is a 2-component product mixed 2 parts Part B (activator) to 1 part Part A by volume. The 5-gallon kit contains 1.65 gal of Part A and 3.35 gal of Part B. Mix each component separately first, then pour Part B into Part A under continuous mechanical agitation. Thin with Thinner 21 only after mixing, up to 6% (7.7 oz/gal). Pot life is 24 hours at 75°F and 50% RH.

Can Carboweld 17 FG be used in immersion service?

Yes, in limited immersion service. Carboweld 17 FG may be used as a pre-construction primer for steel in limited immersion service such as seawater, making it appropriate for ballast tanks and marine hull areas per its ABS/IMO/PSPC certification.

Carboweld 17 FG Fast-Dry Zinc Rich Primer

Q: What certifications does Carboweld 17 FG hold?

Carboweld 17 FG is certified as a pre-construction primer for Lloyd's Register constructions. It is also certified by the American Bureau of Shipping (ABS) to the IMO/PSPC standard for ballast tank linings, and has been tested by Det Norske Veritas (DNV). These are the highest-level marine coating certifications, making it suitable for vessels and offshore structures specified under IMO/PSPC regulations.

Q: What is the coverage rate for Carboweld 17 FG?

Carboweld 17 FG has a theoretical coverage of 738 ft²/gal at 0.5 mils DFT (18.1 m²/l at 12 microns) and 369 ft²/gal at 1.0 mil DFT (9.1 m²/l at 25 microns). Recommended DFT is 0.5–1.0 mils per coat. Allow for loss in mixing and application.

Q: How fast does Carboweld 17 FG dry?

Carboweld 17 FG dries to handle in 10 minutes at 77°F (25°C), 7 minutes at 100°F (38°C), and 5 minutes at 120°F (49°C). Final cure is 7 days at all temperatures. These times are based on 1.0 mil DFT.

Q: Does Carboweld 17 FG require a minimum humidity to cure?

Yes — Carboweld 17 FG is an ethyl silicate product that cures via atmospheric moisture. A minimum relative humidity of 40% is required for proper curing. The maximum is 90% RH. In very dry environments below 40% RH, the coating will not cure properly.

Q: What surface preparation is required for Carboweld 17 FG?

Solvent clean per SSPC-SP1 to remove all oil and grease. Abrasive blast to Near-White cleanliness SSPC-SP10 with an angular surface profile; 15–20% sharp angular abrasive is recommended. Remove weld spatter and round sharp edges to a minimum 1/4-inch radius. Prime bare steel before flash rusting occurs.

Carboweld 17 FG Fast-Dry Zinc Rich Primer

by Carboline

$1,358.42 - $1,358.42

$1,358.42

$1,358.42 - $1,358.42

$1,358.42

Carboweld 17 FG is a fast-drying, two-component, ethyl silicate inorganic zinc-rich primer by Carboline for the prefabrication priming of steel in marine, coastal, and demanding industrial environments. It is a weldable, hard, abrasion-resistant primer that delivers excellent cathodic (sacrificial) corrosion protection on blast-cleaned steel.

This high-performance shop primer is specifically formulated to protect steel on marine vessels, offshore structures, and heavy industrial fabrications during construction, cutting, welding, and assembly. It offers superior heat, impact/abrasion resistance, as well as undercutting resistance. Carboweld 17 FG has been tested by DNV and is ABS-certified to the IMO/PSPC standard for ballast tank linings. It is also certified as a pre-construction primer for Lloyd’s Register constructions.

Carboweld 17 FG PDS >
Carboweld 17 SDS Part A >
Carboweld 17 SDS Part B >
Theoretical Coverage: 738 ft²/gal at 0.5 mils DFT; 369 ft²/gal at 1.0 mils DFT (18.1 m²/l at 12 microns / 9.1 m²/l at 25 microns). Allow for loss in mixing and application.

VIEW THE ENTIRE LINE OF CARBOLINE COATINGS HERE>

Key Features:

Weldable Pre-Construction Primer: Allows direct welding over the applied primer with minimal spatter and no need for removal, producing high-integrity welds.
Cathodic Protection: Provides excellent sacrificial/galvanic corrosion protection during fabrication, storage, and transport.
High Heat Resistance: Continuous dry temperature resistance to 750°F (399°C); non-continuous to 800°F (427°C).
Hard, Abrasion & Impact Resistant: Tough film ideal for demanding marine and offshore fabrication environments.
Excellent Undercutting Resistance & Certifications: ABS-certified to IMO/PSPC for ballast tanks; DNV tested; Lloyd’s Register approved.

Common Industry Applications:

Marine & Offshore: Prefabrication priming of steel for ships, offshore platforms, ballast tanks, and other marine structures.
Heavy Industrial Fabrication: Structural steel, beams, plates, and assemblies in coastal or corrosive environments requiring weld-through capability.
High-Performance Shop Priming: Blast-cleaned steel in controlled shop conditions where fast dry-to-handle, heat resistance, and subsequent topcoating are required.

Carboweld 17 FG is a TWO-COMPONENT SYSTEM (PART A BASE & PART B ACTIVATOR).

Product type: Ethyl Silicate Inorganic Zinc-Rich Pre-Construction Primer.
Applied via: Conventional Spray or Airless Spray (continuous agitation required). Brush may be used for small touch-up areas only.

Shipping & Delivery: Carboline orders typically ship within 1-2 business days following receipt of order. Most orders are received within a week. Expedited shipping is NOT available on most orders.

Looking for a Carboline coating or protectant?
Contact our customer support today to discuss your project:
(800) 567-5358

Quantity

Area to cover (sq ft)

DFT per coat (mils)

Coats

Color

Thinning & Cleanup

⚠️

Thinner 21 Required — Thin Only After Mixing

Carboweld 17 FG is a solvent-based, 2-component inorganic zinc. If thinning is required, add Thinner 21 only after combining Part A and Part B — up to 6% (7.7 oz/gal).

Do not pre-thin either component separately. Clean all equipment and spills immediately with Thinner 21. Moisture in equipment can cause gelation; ensure all lines are dry before use.

Recommended Coating Systems

Shop Primer Only — Prefabrication Phase Protection

Pre-Construction Primer Carboweld 17 FG 0.5–1.0 mils DFT · cathodic protection · weldable

Two-Coat Atmospheric / Industrial System

Shop Primer Carboweld 17 FG 0.5–1.0 mils DFT · cured before topcoat

→

Topcoat Carboguard 890 4–6 mils DFT · epoxy mastic · mist coat first

Three-Coat Marine / Ballast Tank System

Shop Primer Carboweld 17 FG 0.5–1.0 mils DFT · IMO/PSPC certified

→

Intermediate Coat Carboguard 890 4–6 mils DFT · epoxy mastic · mist coat first

→

UV Topcoat Carbothane 134 HG 2–3 mils DFT · polyurethane finish

Frequently Purchased Together

Carboline Thinner No. 21

Required thinner and cleanup solvent for Carboweld 17 FG. Add up to 6% by volume after mixing only.

Call for pricing

Shop Now

Carboguard 890

Cycloaliphatic amine epoxy mastic. Recommended topcoat or intermediate coat over Carboweld 17 FG. Apply mist coat first.

From $419.48 / 2 gal kit

Shop Now

Carbothane 134 HG

High-gloss UV-stable polyurethane finish coat for exterior service over the Carboweld 17 FG system.

From $292.27

Shop Now

Carboweld 11

Solvent-based inorganic zinc alternative. Longer pot life (48 hrs) · applies at 0°F · Lloyds Register certified.

Call for pricing

Shop Now

Product Specs — Carboweld 17 FG

Carboweld 17 FG — Ethyl Silicate Inorganic Zinc Pre-Construction Primer by Carboline.
A fast-drying, hard, abrasion-resistant weldable shop primer engineered specifically for marine vessel and offshore structure fabrication. Delivers cathodic sacrificial protection and excellent undercutting resistance through handling, shipment, and construction. ABS-certified to IMO/PSPC ballast tank standards. DNV-tested. Lloyd's Register certified. Rated to 750°F continuous service. Available in Gray and Green.

✓ ABS Certified — IMO/PSPC Ballast Tank • ✓ DNV-Tested • ✓ Lloyd’s Register Certified • ✓ 750°F Max Service Temp • ✓ Gray & Green Available

✏️ Need a project quote? Request Online

📞 Questions? Call (800) 567-5358 — Mon–Fri 8AM–5PM EST

Carboweld 17 FG by Carboline

Carboweld 17 FG ethyl silicate inorganic zinc marine pre-construction primer by Carboline — 5-gallon kit — Carboweld 17 FG — Marine Inorganic Zinc Shop Primer (5-Gallon Kit)

Shipping Map — Carboline Delivery Timing

US regional warehouse map showing estimated shipping transit times for Carboline product orders from Material Warehouse — Typical transit times vary by destination zone. Click map to enlarge.

Shipping Time

Call (800) 567-5358 for pricing and logistics questions.

Carboline orders ship from regional warehouses nearest to your location, with full product stock maintained at each facility.

Most orders ship within 2–3 business days of order placement. Transit times shown on the map are typical but not guaranteed.

Available size: 5-gallon kit (55 lbs)

Mixing Instructions

Two-part kit: Part A (Base) + Part B (Activator) — 2:1 ratio by volume (B:A)

Mix each component separately with mechanical agitation first. Then pour Part B (activator) into Part A — not the other way around. Mix thoroughly under continuous mechanical agitation. Keep agitating throughout application to prevent zinc pigment from settling.

Pot life: 24 hours at 75°F / 50% RH. Less at higher temperatures or humidity. Do not mix more than can be applied within the pot life.

Kit Components

Kit Size	Part A (Base)	Part B (Activator)
5-Gallon Kit	1.65 gal	3.35 gal

Thinning

Thin only after mixing Part A with Part B. Use Thinner 21 only, up to 6% (7.7 oz/gal). Do not thin before mixing the two components.

Coverage Rates

Recommended DFT: 0.5–1.0 mils (13–25 microns) per coat. Allow for mixing and application loss in practice.

DFT	Theoretical Coverage
0.5 mils (13 µm) — min	738 ft²/gal (18.1 m²/l)
1.0 mils (25 µm) — max	369 ft²/gal (9.1 m²/l)

Solids by volume: 23% ±2%. Allow for mixing and application loss. Source: Carboline Carboweld 17 FG PDS (August 2023, doc 218F).

Curing Schedule

Times based on 1.0 mil (25 micron) DFT. Minimum 40% RH required for curing. Final cure is 7 days at all temperatures.

Surface Temp.	Dry to Handle	Dry to Touch	Final Cure
77°F (25°C)	10 Minutes	5 Minutes	7 Days
100°F (38°C)	7 Minutes	4 Minutes	7 Days
120°F (49°C)	5 Minutes	3 Minutes	7 Days

Surface Preparation

Carboweld 17 FG is designed for new structural steel in marine and industrial shop applications. All surfaces must be clean and dry.

Step	Requirement
Degreasing	Solvent clean per SSPC-SP1 to remove all oil, grease, and contaminants
Blast Cleaning	Near-White Blast — SSPC-SP10 with angular profile; 15–20% sharp angular abrasive recommended
Edge Prep	Remove weld spatter; round sharp edges to minimum ¼” radius
Timing	Prime bare steel before flash rusting occurs
Recoating	When overcoating with inorganic zinc materials, sweep blast between coats

Substrate temperature must be above the dew point. Condensation interferes with adhesion and causes flash rusting on prepared steel. Source: Carboline Carboweld 17 FG PDS (August 2023, doc 218F).

Protection & Performance

Carboweld 17 FG is the Carboweld series primer built for the demands of marine fabrication. Its ethyl silicate binder produces a hard, abrasion-resistant film that withstands the impacts of steel handling, grit blasting adjacent steel, and shipyard transit — where softer zinc primers fail.

Cathodic sacrificial protection corrodes the zinc coating preferentially, protecting the steel beneath. Excellent undercutting resistance means corrosion does not spread beneath the film if the surface is scratched during construction.

Certifications:

ABS Certified to IMO/PSPC standard for ballast tank linings
DNV-Tested (Det Norske Veritas)
Lloyd’s Register certified pre-construction primer

Limited immersion service (seawater) is acceptable — suitable for ballast tanks and marine hull areas per IMO/PSPC certification.

Application: Conventional spray or airless spray with continuous agitation. Brush for small touch-up areas only.

Key Specifications, Packaging & Storage

Property	Value
Generic Type	Ethyl Silicate, Inorganic Zinc
Intended Use	Pre-construction marine & industrial primer — vessels, offshore structures, demanding coastal environments
Color	Gray (0700) · Green (0300)
Solids by Volume	23% ±2%
VOC (As Supplied)	5.37 lbs/gal (644 g/l) nominal
Recommended DFT	0.5–1.0 mils (13–25 microns) per coat
Theoretical Coverage	738 ft²/gal at 0.5 mils · 369 ft²/gal at 1.0 mil
Pot Life	24 hours at 75°F (24°C) / 50% RH · less at higher temps & humidity
Dry to Handle @ 77°F	10 minutes
Final Cure	7 days at all temperatures
Dry Temp. Resistance	750°F (399°C) continuous · 800°F (427°C) non-continuous
Application Temp (All)	Min 40°F (4°C) · Max 100°F (38°C)
Humidity Range	40% – 90% RH — minimum 40% required for curing
Certifications	ABS Certified IMO/PSPC · DNV-Tested · Lloyd’s Register pre-construction primer
Immersion Service	Limited immersion acceptable (seawater per IMO/PSPC)
Application Methods	Conventional Spray · Airless Spray · Brush (touch-up only)
Thinning	Thinner 21 only · up to 6% (7.7 oz/gal) · after mixing only
Cleanup	Thinner 21
Flash Point — Part A	55°F (13°C)
Flash Point — Part B	45°F (7°C)
Shelf Life — Part A	12 months at 75°F (24°C)
Shelf Life — Part B	24 months at 75°F (24°C)
Storage	Indoors · 40–110°F (4–43°C) · 0–90% RH
Kit Size	5-Gal Kit (55 lbs)

Source: Carboline Carboweld 17 FG PDS (August 2023, doc 218F) & Product Flyer (00-46-1125-824).

Good to Know Before You Buy

⚠️ Key Points for Buyers

The marine-grade choice — ABS, DNV, and Lloyd’s Register certified. Carboweld 17 FG holds IMO/PSPC certification for ballast tank linings, tested by DNV and certified by ABS. If your project spec calls for IMO/PSPC compliance or Lloyd’s Register certification, this is the product. Carboweld 11 and 14 WB are not certified to this standard.
Hard, abrasion-resistant film built for shipyard conditions. The ethyl silicate binder produces a harder film than potassium silicate or solvent-borne alternatives. It resists mechanical damage during steel handling, adjacent blasting operations, and transport on marine vessels — the typical abuse a shop primer faces on a shipbuilding project.
Requires minimum 40% humidity to cure — will not cure in very dry conditions. Ethyl silicate cures via atmospheric moisture. Below 40% RH the film will not cure properly. This is the opposite concern from most coatings — plan application for adequate humidity, not just adequate temperature.
Final cure takes 7 days regardless of temperature. Dry to handle is fast (5–10 minutes), but full mechanical and chemical cure requires 7 days at all temperatures. Factor this into project scheduling for topcoating, ballast tank flooding, or structural loading.

Frequently Asked Questions — Carboweld 17 FG

What certifications does Carboweld 17 FG hold?

Carboweld 17 FG carries the most comprehensive marine coating certifications available: ABS-certified to the IMO/PSPC standard for ballast tank linings, DNV-tested (Det Norske Veritas), and certified as a pre-construction primer for Lloyd’s Register constructions. These make it the appropriate choice for marine vessels, offshore platforms, and any project where these certifications are specified.

What is the coverage rate for Carboweld 17 FG?

Carboweld 17 FG has a theoretical coverage of 738 ft²/gal at 0.5 mils DFT and 369 ft²/gal at 1.0 mil DFT. Recommended single-coat DFT is 0.5–1.0 mils (13–25 microns). Solids by volume are 23%, which is lower than other zinc primers — allow for mixing and application loss in practice.

How fast does Carboweld 17 FG dry?

Carboweld 17 FG dries to handle in 10 minutes at 77°F (25°C), 7 minutes at 100°F, and 5 minutes at 120°F. However, final cure is 7 days at all temperatures. The fast dry-to-handle time supports shop throughput, but the 7-day final cure must be factored into scheduling for topcoating or service.

What is the mix ratio and how do I mix Carboweld 17 FG?

The mix ratio is 2 parts Part B (activator) to 1 part Part A by volume. The 5-gallon kit contains 1.65 gal Part A and 3.35 gal Part B. Mix each component separately with mechanical agitation first, then pour Part B into Part A (not the reverse). Agitate continuously throughout application. Pot life is 24 hours at 75°F / 50% RH — less at higher temperatures or humidity.

Does Carboweld 17 FG require a minimum humidity to cure?

Yes — minimum 40% relative humidity is required. Carboweld 17 FG is an ethyl silicate product that cures via atmospheric moisture. In very dry environments (below 40% RH), the film will not cure properly. Maximum humidity is 90% RH. This is an important planning consideration for enclosed shops with low humidity in winter months.

What surface preparation is required for Carboweld 17 FG?

Solvent clean per SSPC-SP1, then abrasive blast to Near-White cleanliness SSPC-SP10 with an angular surface profile (15–20% sharp angular abrasive recommended). Remove weld spatter and round sharp edges to a minimum ¼” radius. Prime bare steel before flash rusting occurs. When recoating with inorganic zinc materials, sweep blast between coats.

Can Carboweld 17 FG be used in immersion or ballast tank service?

Yes — Carboweld 17 FG is approved for limited immersion service such as seawater. Its ABS certification to the IMO/PSPC standard for ballast tank linings means it can be specified for ballast tanks, marine hull areas, and offshore structures where seawater exposure is anticipated.

What topcoats are compatible with Carboweld 17 FG?

Acrylics or epoxies are compatible depending on the exposure and service environment. Always apply a mist coat of the topcoat first before the full coat to minimize bubbling and cratering. Consult Carboline Technical Service for specific topcoat recommendations for your service environment.