Will it transmit a 12volt current between to 2 metals

I could not recommend this for that usage.

Will this repair a Hairline crack on an aluminium boat?

I don't see why not , it worked on a small crack in the sump of my car and that was 2 years ago . Just a small tip, work it through your fingers until soft with gloves also it will cure faster if you apply heat on it after applying to crack eg hair dryer.

Can this be used to repair an enlarged bolt hole of a mitre clamp?

Well just used it to seal an oil sump temp, worked fine, also fixed my exaust with it. You must prep before to work properly and work it through your fingers before applying works great if used correctly.

A petrol tank does hole, so, is it good for filled metal tank's hole?

Difficult answer .If the metal it is to stick to is very clean and a big enough patch was made to stick over the area,Making sure it goes into the hole as well, possibly .Though difficult if petrol is leaking through .

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J-B Steel Stik Reinforced Epoxy Putty

Product ID: 47937039

Details

Brand
J-B Weld
Item form
Paste
Material
Epoxy Resin
Special feature
High Strength
Specific uses for product
metal

🔥Withstands up to 148ºC

⏱️Sets in 5 minutes

⚙️900 PSI tensile strength

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AR$57870

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Fix it fast, fix it strong — the steel solution pros trust!

RAPID SET CURE - Ready to handle in just 5 minutes, fully cured and drillable in 1 hour—no downtime.
PROFESSIONAL FINISH - Can be machined, filed, and painted for seamless, high-quality repairs.
MOLDABLE VERSATILE - Easily shaped to patch, rebuild, or fill metal surfaces with precision and ease.
HEAT WATER RESISTANT - Durable under heat up to 148ºC and water exposure, perfect for tough environments.
INDUSTRIAL GRADE STRENGTH - Reinforced epoxy putty with 900 PSI tensile power for metal repairs that last.

J-B Steel Stik Reinforced Epoxy Putty is a high-strength, steel-reinforced epoxy compound designed for quick, durable metal repairs. It sets in 5 minutes and cures fully in 1 hour, achieving a tensile strength of 900 PSI and resisting heat up to 148ºC. Moldable and machinable, it offers a professional-grade finish for industrial and home use.

Specifications

ASIN	B000786GLM
Best Sellers Rank	243,404 in Automotive ( See Top 100 in Automotive ) 926 in Fillers, Adhesives & Sealants
Brand	J-B Weld
Colour	Dark Gray
Compatible Material	Metal
Container Type	Tube
Customer Reviews	4.5 4.5 out of 5 stars (1,261)
Full Cure Time	60 Minutes
Global Trade Identification Number	00043425826756
Item Form	Paste
Item Package Quantity	1
Item Volume	2 Fluid Ounces
Item Weight	1.8 Ounces
Manufacturer	J-B Weld
Manufacturer Part Number	8267-S
Material	Epoxy Resin
Model Number	8267
Number of Pieces	1
Other Special Features of the Product	High Strength
Specific Uses For Product	metal
Tensile Strength	900 Pounds Per Square Inch
UPC	079340820067 043425826756 043425021007 718767917058
Unit Count	57.0 gram
Viscosity Level	High
Water Resistance Level	Water Resistant

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