Maxron mapp brazing gas is used in incineration with air for brazing and soldering in Nairobi Kenya. Here, it has a slight advantage over competing propane fuel because of its higher combustion temperature of 2,020°C in air. Brazing is a process to join two metals using a filler metal with a lower melting point which flows into the joint. Mapp gas (a high-temperature mixture of petroleum byproducts) comes liquefied in compact canisters. This allows torches to operate for several hours and some of the new instant-start brazing tips are quite inexpensive and very easy to use. The intense heat produced by oxy-acetylene flame quickly increases the temperature of the base metal to the point of formation of a film.

MAXRON MAPP Gas Physical Properties

MAPP gas is also useful in incineration with air for brazing and soldering. Here, it has a slight advantage over competing propane fuel because of its higher combustion temperature of 2,020°C in air. MAXRON MAPP Gas is colorless in both liquid and gas form. The gas has a noticeable acetylene-like or fishy odor at concentrations above 100 ppm. This is due to the addition of substituted amines as a polymerization inhibitor. Low molecular weight alkynes have strong odors. MAPP gas is toxic if inhaled at high concentrations.

Specifications of maxron mapp brazing gas

Manufacturer MAXRON
Color ‎Yellow
Item Weight ‎400g
Product Dimensions ‎1 x 1 x 1 inches

MAP/PRO

(99.5-100% propylene): High temperature and high pressure, costs more than propane but also produce higher temperature, so you can work on some brazing or welding projects that have certain temperature requirements. Usually with yellow bottles to mark difference from the blue bottle propane.
MAPP / BLUEFIRE

One of the choices that any HVACR service company has to make is whether to supply their trucks with expensive oxygen-acetylene brazing rigs or Mapp gas torches, for each has its own unique advantages.

Mapp gas (a high-temperature mixture of petroleum byproducts) comes liquefied in compact canisters. This allows torches to operate for several hours, and some of the new instant-start brazing tips are quite inexpensive and very easy to use. So they definitely have their place in HVACR service trucks, if for no other use than an emergency backup.

Oxygen-acetylene rigs, on the other hand, are usually about six times more expensive than their Mapp gas counterparts. They are bulky & heavy. Also, they are unwieldy; the gas at startup creates a lot of soot; the gases cannot be liquefied so they don’t last as long. Lastly, the gas refilled containers are usually not available in hardware stores. However, the flame they produce is much hotter. So at first glance, the Mapp gas solution looks much better to many contractors and technicians.

However, the hotter temperature of the oxygen-acetylene rig is a very important factor that should not be overlooked.

It isn’t that the heating properties of Mapp gas itself are the problem, but the lack of introduction of pure oxygen into the flame. And the resulting introduction of inert gases from the air into the flame creates a larger, less concentrated, and cooler burn. So combination Mapp gas-oxygen rigs (where available) are very desirable due to the longer burn and ease of product availability.

The problem with the larger cooler flame common to standard air-Mapp gas rigs is: It is limited to brazing smaller components and smaller copper tube sizes. Moreover, it takes longer and results in more heating of the surrounding area, which does more damage to heat-sensitive parts. Also, it creates more copper-oxide corrosion than a smaller, hotter flame. So, I don’t recommend Mapp gas-air brazing of such devices as heat-pump reversing valves, filter-driers and compressors.