Brass was used for marine craft because of it's anti-corrosion properties, especially in a salt water environment. It will do it's job if it is engineered and manufactured to the design standard/size required. The arm on this car has not been designed for the purpose, and it is therefore an unknown strength link in the steering system. It may, or may not, be up to the job, but I would be finding out for sure if it were me. Get it tested, or have it turned into the said candlestick.