Weld studs Materials
Material and surfaces of Tucker weld studs
From simple bearing protection to long-term corrosion protection, STANLEY Engineered Fastening can offer the right surface quality. We develop and adhere to the requirements of all release processes throughout the automotive industry for our customers.
Materials and stability classes for Tucker weld studs are also harmonized with all customer requirements.
| Stability class | Description |
| A2 | stainless steel A2 |
| F1 | stainless steel F1 |
| Cu | Copper |
| 4.8 | Steel 4.8 |
| AlMg | Aluminium-Magnesium alloy |
| Brass | Messing |
| 6 | Steel 6 |
| 6.8 | Steel 6.8 |
| 8 | Steel 8 |
| 8.8 | Steel 8.8 |
| 10 | Steel 10 |
| Surface-Code | Description |
| 0 | burnished copper plating, 2-6 µm |
| 2 | nickel-plated, 10 - 15 µm |
| 3 | burnished copperplating 8 - 12 µm |
| 4 | galvanised, 8 - 12 µm, chromalised black |
| 5 | uncoated without subsequent processing |
| 6 | galvanised without subsequent processing, 8 - 12 µm 9 |
| 10 | galvanised, 6 - 12 µm, chromalised blue chromium 3 |
| 13 | burnished copperplating + lubricant |
| 16 | Tin/Zinc SnZn 70/30, 8 - 12 µm |
| 17 | Titanium protective coating |
| 18 | Zinc/Iron ZnFe ,8 - 12 µm, chromalised black |
| 19 |
Aluminium-etched with titanium conversion treatment |
| 21 | Almac, 14 +/- 3 µm silvery grey TL155 |
| 22 | galvanised, 8 - 12 µm, colourless/bluish chromalised Chromium 3 / thick layer passivation |
| 23 | with anti-friction agent |
| 24 | sealed with sealing wax |
| 25 | galvanised, 8 - 12 µm, colourless/bluish chromalised Chromium 3 / thick layer passivation,dyed red |
| 26 | Tin/Zinc SnZn 70/30, 5 - 8 µm, transparent chromalisation chromium 3 |
| 27 |
Aluminium polished with titanium conversion treatment |
| 29 | Tin/Zinc SnZn 30/70,8 - 12 µm, mechanically coated |
| 30 | Tin/Zinc SnZn 70/30, 5 - 8 µm, transparent chromalisation chromium 3 + Slotofin Nr. 10 seal |
| 31 | Zinc flake coated surface |
| 32 | Zinc/Nickel 12-15% Nickel,8 - 12 µm, colourless chromalisation with anti-friction agent |
| 34 | Tin/Zinc SNZn 70/30, 5 - 8 µm, transparent chromalisation + anti-friction agernt |
| 35 | Zinc flake coated surface |
| 36 | Zinc/Nickel 12-15% Nickel, 8 - 12 µm, colourless chromalisation |
