Repair Systems — 03 — Facade & External Envelope
Stainless steel arris & corner angle beads
Technical product reference for Grade 316 stainless steel arris and corner angle beads used in coastal and corrosive environment render repair and reinstallation works on Australian Class 2 strata and commercial buildings. Covers material grade selection, product comparison, and application guidance.
What are stainless steel arris and corner angle beads?
Stainless steel arris and corner angle beads are used in coastal, marine, and corrosive environments where aluminium or galvanised steel beads would suffer chloride-induced corrosion, expand, and cause staining or delamination of the surrounding render.
Product Reference
3 products — stainless steel arris and corner angle beads — scroll to view all
Unifix Grade 316 Stainless Steel Corner Bead
Grade 316 stainless steel arris corner bead — coastal environments
System Description
Grade 316 (marine grade) stainless steel arris corner beads are used in coastal and corrosive environments where aluminium or galvanised steel beads would corrode and cause render staining or delamination. Grade 316 contains molybdenum (2–3%) for superior resistance to chloride corrosion compared to Grade 304. Confirm leg dimensions, material thickness, and availability with Unifix / Buildex. TODO: owner confirm — Unifix Grade 316 stainless arris bead specification and dimensions.
Technical Properties
- Grade 316 stainless steel — molybdenum addition for chloride resistance
- Perforated flanges for render key
- Suitable for coastal, marine, and industrial corrosive environments
Limitations
- Higher cost than aluminium — specify where corrosion risk justifies the premium
- Grade 304 is not suitable in marine environments — confirm Grade 316
- TODO: owner confirm — Unifix Grade 316 stainless arris bead specification
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
Rondo Stainless Steel Corner Bead (Grade 304 / 316)
Stainless steel arris corner bead — Grade 304 or 316
System Description
Rondo distributes stainless steel corner beads in Grade 304 (for non-coastal exterior and interior applications) and Grade 316 (for coastal and marine applications). Confirm the correct grade, leg dimensions, and material thickness with Rondo for each specific application. In marine environments within 1km of the coast, Grade 316 is required — Grade 304 is not adequate for direct marine exposure. TODO: owner confirm — Rondo stainless steel arris bead specification, grades available and dimensions.
Technical Properties
- Grade 304 for non-coastal exterior and interior
- Grade 316 for coastal and marine environments
- Perforated flanges for render key
Limitations
- Confirm grade — do not substitute 304 in coastal environments
- TODO: owner confirm — Rondo stainless arris bead specification and grade availability
- Higher cost than aluminium
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
Trade-Supply Grade 316 Stainless Arris Bead
Trade-supply Grade 316 stainless steel arris bead
System Description
Grade 316 stainless steel arris beads are available through specialist coastal builders merchants and stainless steel fabrication suppliers. When sourcing from trade supply, confirm Grade 316 (not 304), leg dimensions, and material thickness before ordering. Some suppliers offer custom-cut lengths for large projects.
Technical Properties
- Grade 316 stainless — confirm grade with supplier
- Available in various leg profiles
- Confirm material thickness
Limitations
- Confirm Grade 316 — not 304 — before purchase
- Confirm leg dimensions for render depth
- Specialist supply may have longer lead times
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
System Comparison
Side-by-side comparison of stainless steel arris and corner angle bead products. Confirm all product selections against the current manufacturer TDS before specifying.
| Product | Brand | Grade | Molybdenum | Leg size | Flange type | Suitable environment | Primary use |
|---|---|---|---|---|---|---|---|
| Unifix Grade 316 Stainless Corner Bead | Unifix / Buildex | 316 (marine grade) | Yes — 2–3% | Confirm from Unifix | Perforated | Coastal, marine, industrial corrosive | Coastal facade render corner protection — masonry, AAC, concrete |
| Rondo Stainless Corner Bead | Rondo | 304 or 316 — confirm | 316 only — confirm grade | Confirm from Rondo | Perforated | 304 non-coastal; 316 coastal and marine | Exterior and interior render corners — specify grade for environment |
| Trade-Supply Grade 316 Stainless Arris Bead | Trade / Specialist Supply | 316 — confirm with supplier | Yes — confirm grade | Various — confirm from merchant | Perforated | Coastal and marine | Coastal facade render corners — specialist supply |
Do not confuse stainless steel arris beads with:
- Aluminium beads (not suitable in coastal environments)
- Galvanised steel beads (may corrode in coastal environments)
- PVC beads (plastic — no structural edge)
- Mesh-wing beads (integral mesh flange — different product)
Disclaimer
This page provides general technical information only. Final product selection must be confirmed against the current manufacturer technical data sheet, project specification, substrate condition, exposure classification, AS 3700, NCC requirements, and applicator warranty conditions. Products marked TODO: owner confirm require verification before specifying. Do not rely on this reference as a substitute for professional engineering or facade consultant advice.