Stainless steel strip for warm-edge spacers
Spacer profiles for insulating glass units.
Insulating glass spacers
The spacer keeps the panes of an insulating glass unit apart and holds the desiccant. Profiles made from thin stainless strip reduce thermal bridging compared with conventional profiles and improve the insulation of the window.
Stainless steel conducts heat far less than aluminium and, used in very thin gauges, further reduces the thermal bridge at the edge of the insulating glass unit. Spacers are roll formed at high speed, so thickness and width must stay consistent over long lengths to avoid section variations and roll former stoppages. 3S supplies thin stainless strip with EN or ASTM tolerances and 100% dimensional control, in a 2R/BA finish with a clean surface suited to sealant adhesion. Spools up to 1500 kg, with parallel or traverse winding, provide long continuous lengths and reduce joints.
Where it is used
- Windows and frames
- Curtain walling
- Doors and insulated glazing
Recommended grades
Supply
| Parameter | Range | Notes |
|---|---|---|
| Typical grades | AISI 301, 201, 304 and 430, work-hardened or annealed | Other grades on request |
| Thickness | Annealed 0.05 – 0.70 mm Work-hardened 0.05 – 2.50 mm | Typical for this application: 0.075 – 0.090 – 0.100 mm |
| Width | 3 – 1250 mm | Typical: 3.5 – 30 mm |
| Finishes | Annealed 2R / BA • Work‑hardened 2H | Calibrated mechanical properties |
| Formats | Strip • Narrow strips • Spools • Sheets | Sheets cut to size up to 1000 mm |
| Spools | From 15 kg to 1500 kg | ID 50–400 mm • traverse or parallel winding |
Tolerances according to EN ISO 9445 or customer specification. 3.1 certificates on request.
Frequently asked questions
Request a quoteWhy does a stainless spacer improve insulation?
In which formats do you supply spacer strip?
How can I get a quote?
Tell us the alloy, finish, thickness, width, edge and format (strip/narrow strip/spool) and we will send you a quick quotation.