AlfaTech: T.E.A® B coating

Home > Processes > T.E.A.^® B coating

T.E.A.^® B coating

RONALLOY™ GT 300

The T.E.A.^® B / RONALLOY™ GT 300 surface treatment deposits an intermetallic alloy of copper (62%) and tin (38%) on components free of lead, cobalt and cyanides.
It is a semi-gloss coating with a white bronze effect, which can be used both as a finish and as a substrate. It is durable and has good resistance to corrosion, wear, and tarnishing. Resistance to fogging can also be enhanced by applying an additional chrome coating.

It complies with Regulation (EC) 1907/2006 (REACH), and is a valid alternative to nickel in components intended for contact with drinking water and liquids for human consumption (food, beverages, etc.) and to white bronze.

COATING FEATURES

Thickness up to 20 μm
> 248 h NSS
> 48 h CASS
Hardness 400-450 HV
Frame treatment
Rotary barrel treatment

TREATABLE WEIGHTS AND MEASURES

Minimum dimensions: a few millimetres
Maximum cylinder dimensions: 1850 mm – ø 450 mm – weight 450 kg
Maximum dimensions of parallelepipeds: 1.850x450x1.300 mm – weight 450 kg

COMPARISON WITH OTHER MATERIALS/DEPOSITS

	TEA PLUS ^®	TEA^® B + Cr+3S	Ni	Ni + Cr+6
Toxicity	NO	NO	Toxic suspected carcinogen	Toxic suspected carcinogen
REACH compliance	YES	YES	YES	YES but excluded since 2020
Metal content	VERY LOW 20 g/l total	LOW 50 g/l	70 g/l	170 g/l di Ni + Cr+6
Environmental impact	LOW	LOW	HIGH	VERY HIGH

TEA PLUS^®

Toxicity: NO
REACH compliance: YES
Metal content: VERY LOW 20 g/l totale
Environmental impact: LOW

TEA^® B + Cr+3S

Toxicity: NO
REACH compliance: YES
Metal content: LOW 50 g/l
Environmental impact: LOW

Ni

Toxicity: Toxic suspected carcinogen
REACH compliance: YES
Metal content: 70 g/l
Environmental impact: HIGH

Ni + Cr+6

Toxicity: Toxic suspected carcinogen
REACH compliance: YES but excluded since 2020
Metal content: 170 g/l di Ni + Cr+6
Environmental impact: VERY HIGH

SECTORS OF APPLICATION

Food: professional coffee machines, vending machines (boiler cover, boiler flange, heating element flange, cap, bell, interface bushing, plate, double cone, block, heating element holder fitting, spray holder, nipples, boiler, group body, tap body, filter holder group, dispensing group, coupling ring, fitting, injector, cap, mushroom, level body, shutter, valve body, perforator ring, pick-up tube, spray holder, adapter, fitting, diffuser, sleeve, tube coupling, distributor, bush, tube coupling, distributor, manifold, valve cap, pre-infusion chamber cap, injector fitting, gilgeur)
Food Sector ice makers (evaporator, evaporator unit, modular evaporator, CS evaporator)
Food Sector: beer taps and gassers (blending taps, taps, valve, tap heads, reducer)
Plumbing Sector (fitting, boiler, heating element, distributor, distributor, by-pass body, hydraulic components, fittings for circular heat exchangers, thermostatic valves, ball valves, manual valves, mixing valves, meter boxes, volumetric meter, fitting, metering device, reducer, elbow, cap, reduction, sleeve, tee, curved fitting, straight fitting, compression fittings, hose barb, washer, manifold)

Download

In this section you can download the PDF for the specific process.

scheda-rivestimento-tea-b-ronalloy-gt-300-alfatech.pdf

FAQ

What are the advantages of T.E.A.^® B / RONALLOY™ GT 300 surface treatment?

It is a process with a very low environmental impact: the concentration of salts is three times lower than in traditional processes. Deposition thicknesses of T.E.A.^®B – RONALLOY™ GT-300 up to 20 µm are also achieved.

It complies with REACH (CR Regulation No. 1907/2006) for enhanced protection of human health and the environment.

It does not contain toxic heavy metals such as Lead, Cobalt and Cadmium.

It allows maximum customisation, i.e. it can be applied as a substrate to gold, palladium, chrome and their combinations.

T.E.A.® B coating