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3M Scotch-Weld EC-3524 B/A Discontinued

3M Aerospace have communicated with us regarding a product discontinuation affecting their Scotch-Weld EC-3524 B/A Void Filling Compound.

Read the official communication from 3M here.

3M Scotch-Weld EC-3515 B/A FR Void Filling Compound is intended as a direct replacement for 3M Scotch-Weld EC-3524 B/A Void Filling Compound and offers the following properties and benefits:

  • A two-part, low density, void filling compound based on epoxy chemistry
  • Designed for void filling, edge sealing, and for abradable compound applications
  • Low-density material (<0.5g/cm3 mixed)
  • Suitable for room temperature or elevated temperature curing
  • Flame resistant per 14 CFR / CS 25.853 (a), Appendix F, Part I (a) (1) (ii), 12-second vertical burn
  • Can be uniformly mixed by hand or by speed mixing equipment
  • Base is either blue or black in colour, accelerator is white. Easy to visually determine when the product is uniformly mixed
  • Manufactured in two 3M locations: 3M Springfield, Missouri (USA) and 3M Tilloy (France)

3M have been working with OEM specification custodians and can now confirm that Scotch-Weld EC-3515 B/A FR is commercially available and approved to certain OEM specifications as outlined below.

Current Silmid Part Code Colour/Size/Spec/Supply Source New Silmid Part Code Colour/Size/Spec/Supply Source
EC3524B15K Black/15Kg/MSRR 1001/France P0241177 Black/15Kg/RRMS 45002-5/France
P0230115 Black/1Kg/3M Standard/France P0241175 Black/1.6Kg/RRMS 45002-5/France
EC3524B4KG Black/4Kg/MSRR 1001/France P0241175 Black/1.6Kg/RRMS 45002-5/France
EC352415KG Blue/15Kg/MSRR 1001/France P0241180 Blue/15Kg/RRMS 45002-4/France
EC35240USG Blue/1USG/3M Standard/USA P0241174* Blue/1.6Kg/Various/USA
P0210416 Blue/1USG/BMS 5-28/USA TBC Specification not currently active on EC-3515 B/A FR
EC352404KG Blue/4Kg/3M Standard/France P0241178 Blue/1.6Kg/RRMS 45002-4/France

*Please speak to a Customer Service Representative to order US Source of Supply material.

In addition to the above, we will also be sourcing product to Pratt & Whitney specifications. Our full part code offering is below:

Silmid Part Number Product Description Source of Supply
P0241175 3M Scotch-Weld EC-3515 FR B/A Black Void Filling Compound 1.6Kg Kit *RRMS 45002-5 FRANCE
P0241177 3M Scotch-Weld EC-3515 FR B/A Black Void Filling Compound 15Kg Kit *RRMS 45002-5 FRANCE
P0241178 3M Scotch-Weld EC-3515 FR B/A Blue Void Filling Compound 1.6Kg Kit *RRMS 45002-4 FRANCE
P0241179 3M Scotch-Weld EC-3515 FR B/A Blue Void Filling Compound 1.6Kg Kit *RRMS 45002-4 *PWA 36756E *CPW 561C USA
P0241180 3M Scotch-Weld EC-3515 FR B/A Blue Void Filling Compound 15Kg Kit *RRMS 45002-4 FRANCE
P0241181 3M Scotch-Weld EC-3515 FR B/A Blue Void Filling Compound 15Kg Kit *RRMS 45002-4 *PWA 36756E *CPW 561C USA
P0241174* OFFLINE ONLY - 3M Scotch-Weld EC-3515 FR B/A Black Void Filling Compound 1.6Kg Kit *RRMS 45002-5 USA
P0241176* OFFLINE ONLY - 3M Scotch-Weld EC-3515 FR B/A Black Void Filling Compound 15Kg Kit *RRMS 45002-5 USA

*Please speak to a Customer Service Representative to order US Source of Supply material.

Frequently Asked Questions

Question Answer
Will EC-3524 B/A AF and FST versions be discontinued too? No, 3M Scotch-Weld EC-3524 B/A FST and EC-3524 B/A Antimony Free (AF) manufactured in Tilloy, France are out of scope and will remain in the portfolio.
What is the difference between EC-3515 B/A FR and EC-3524 B/A?

3M Scotch-Weld Void Filling Compound EC-3515 B/A FR is intended to be a direct replacement for 3M Scotch-Weld Void Filling Compound EC-3524 B/A.

EC-3515 B/A FR has been formulated to have similar handling and mechanical properties to EC-3524 B/A and is also available in blue and black.

*Please note that when the blue variant is cured at an elevated temperature, it transitions to a blue/green colour.

Why does EC-3515 B/A FR have ‘FR’ in the description?

EC-3515 B/A FR is designed to meet 14 CFR / CS 25.853 (a), Appendix F, Part I (a) (1) (ii), 12-second vertical burn*. As a result, 3M have included FR in the description.

*Tested in accordance with 14 CFR 25.853 (a), Appendix F, Part I (a) (1) (ii), 12-second vertical burn per FAA Policy Statement PS-ANM-25.853-01-R2, Reference 21, Option 1 (in a stand-alone mode, cured test plaque of nominal size: 0.25” x 3” x 12”). Installation approval is the responsibility of the design approval holder or the aircraft owner/operator.

How does EC-3515 B/A FR perform versus EC-3524 B/A? EC-3515 B/A FR has been extensively tested on industrial scale equipment at both Tilloy and Springfield manufacturing plants. All batches have produced test results which align with EC-3524 B/A historical test data and OEM specification requirements. Additionally, many OEM’s have now completed material qualifications (see 3M bulletin for details).
Where is EC-3515 B/A FR manufactured?

EC-3515 B/A FR is manufactured in 3M Tilloy, France AND 3M Springfield, MO, USA.

Note: Some OEMs have only one plant qualified, please refer to the 3M bulletin for details.

Can 3M provide test data? Yes, 3M test data can be provided upon request. Please contact your Technical Account Manager for further support.
Is a Technical Datasheet (TDS) available? Yes, the Technical Datasheet for EC-3515 B/A FR is available for download from the product detail pages of EC-3515 B/A FR.
Is a Safety Datasheet (SDS) available and where can I find it? Yes, the Safety Datasheet for EC-3515 B/A FR is available for download from the product detail pages of EC-3515 B/A FR.
What is the shelf life of the product? Shelf life is minimum 6 months from date of shipment in the original unopened packaging when stored at 59-77°F/15-25°C and supplied to 3M Standard.
What is the recommended storage temperature for EC-3515 B/A FR? EC-3515 B/A FR should be stored at room temperature.
Is EC-3515 B/A FR available in the same packaging as EC-3524 B/A? The packaging of EC-3515 B/A FR has been harmonised between plants. EC-3515 B/A FR is available in the following sizes:
  • 1.6kg Kit (equivalent to the current 0.5 gallon blue kit from Springfield)
  • 15Kg Kit

*4kg and 1kg Kits are not available.

Both sizes are available in a ‘bag-in-bag’ packaging format; a metallic outer bag and an internal poly bag.

Consult a TAM