ISO QMS Certified
"Our Science ... Your Success"

How to Bond Stainless Steel

  • Home
  • How to Bond Stainless Steel

How to Bond Stainless Steel

bond stainless steel

There are several options to bond stainless steel.  Stainless steel or “inox steel” is a steel alloy containing chromium. It does not corrode, rust or stain like normal steel.  It normally is quite easy to bond and does not require much in the way of surface preparation, however, mirror-finish stainless steel can have a very low surface energy and prove difficult to bond.

Providing you are not dealing with a mirror finish the following adhesive types bond stainless steel:

Anaerobic adhesives – threadlockers, thread sealants, form in place gaskets and retaining compounds all work well on stainless steel.  However, it is important to note that stainless steel is a fairly inactive metal so the anaerobic adhesives will develop strength more slowly than the steel fixture times noted on the data sheets.  Special grades which cure faster on stainless include; HM163 retaining compound, HM135 threadlocker and LH150 pipe sealant.

Cyanoacrylate adhesives – all grades bond stainless steel, but special grades for metals will have increased adhesion.  Permabond 910 is the original pure methyl cyanoacrylate which was developed for bonding metals.

Structural adhesives like one component heat cure epoxies, two component epoxies, and structural acrylics bond stainless steel –  again, providing the surface isn’t super smooth.  For highest bond strength, contact Permabond for a specialty stainless steel bonding adhesives.

Or see our new stainless steel bonding grades here.

UV curable adhesives bond well to stainless steel providing the second substrate permits UV light to pass through.  Metal to glass grades include; UV610, UV620, UV625, UV670 and UV7141.

Surface preparation and bonding stainless steel

Often stainless steel can be bonded as received.  However, it can be degreased with isopropanol, or Permabond Cleaner A to remove contamination.  Do not use white spirit, turpentine etc… as these may leave a residue.  Ensure solvent is fully evaporated before attempting to bond.

How to bond stainless steel that has a mirror finish?

Roughening the stainless steel surface does improve the adhesion and durability of most adhesives.

However, stainless steel is very hard so abrading the surface with sand paper, scotch brite, or steel wool is not easy.

Automated means of abrading the surface can generate heat which, might cause a surface change decreasing the adhesion of adhesives to the stainless steel.

If treatment is needed to obtain a high strength bond to mirror finish stainless steel sand blasting is recommended to roughen up the surface without generating heat.

 

Contact us for more information

Contact Us

Your information is always kept private

Products

Recent Blogs

21Jul
Permabond MT3836 – Flexible, Fire Retardant and Thermally Conductive Adhesive

Permabond is delighted to announce the introduction of Permabond MT3836 - flexible, fire retardant and thermally conductive adhesive. This two-component hybrid system cures fully at room temperature to form a flexible, thermally conductive m...

Read more
17Jun
Cationic Epoxy/UV Adhesives Cure with UV Light or Heat or Both!

Permabond Europe's new cationic epoxy/uv adhesives cure with UV light or heat or both! Permabond UV7220 (black) and Permabond UV7221 (clear) are epoxy resins that cure when exposed to 365nm UV light, and they can also cure with heat like sta...

Read more
23Mar
Permabond F201 Toughened, flexible, anaerobic sealant

Anaerobic sealants are characteristically very rigid, hard adhesives which work well in compression, torsion and shear but are notoriously brittle and unsuitable in applications where there could be peel or cleavage forces. When bonding dissi...

Read more
03Mar
FDA & EU 10/2011 Compliant Adhesive for Food Contact

PERMABOND® ET5162 is an FDA & EU 10/2011 compliant adhesive. It has been formulated to comply with both FA 175.105 and EU food contact regulations 10/2011. It is a two-part, room temperature curing epoxy adhesive, which combines high pe...

Read more
14Jan
High Temperature Resistant Cyanoacrylate

Permabond introduces new high temperature resistant cyanoacrylate adhesives! PERMABOND® 825 is a low viscosity cyanoacrylate adhesive that provides higher strength at high temperature. This fast-setting cyanoacrylate bonds metals, rubbers, p...

Read more
15Dec
New no odour adhesives for low surface energy plastics

PERMABOND® is delighted to announce the launch of Permabond TA4630 and TA4631, no odour adhesives for low surface energy plastics, especially developed for difficult to bond plastics such as polypropylene, polyethylene and&nb...

Read more
18Jun
Permabond Launches UV639 High Performance Acrylic Bonder

Permabond Launches UV639 High Performance Acrylic Bonder In the world of bonding acrylic (or Perspex®, PLEXIGLASS®, PMMA as it is also known), adhesives used to join this material are often referred to as "acrylic adhesives". This sho...

Read more
28Jun
Permabond Europe Launches TA4207 – No surface preparation!

Permabond Europe Launches TA4207 – A new versatile, high strength adhesive Permabond TA4207 expands our existing range of methyl methacrylate (MMA) adhesives, and is a 2-part, 1:1 mix ratio product, which achieves very high shear strengths...

Read more
12Oct
Permabond adhesives for polyolefins are also great on rubber, PET, PEEK and acetal!

Permabond’s TA46XX adhesive range is well-known and very popular for its ability to bond low surface energy plastics such as polypropylene, polyethylene, and PTFE, but Permabond adhesives for polyolefins are also great on rubber, PET, PEEK...

Read more