On Jul 15, 10:16*pm, Gib Bogle wrote:
On 7/16/2011 12:54 AM, Andy Breen wrote:

On Fri, 15 Jul 2011 05:05:17 -0700, Matty F wrote:

shurely shome mistake

Boilers are not cast iron just for starters

Not (usually..[1]) in locomotive applications for many years, but
it was the standard material for many boilers - including locomotive
ones back in the earlies.

The first commercially successful locomotives - and the first
exported - had cast iron boilers, after all..

Pretty hard to cast a boiler, shirley?

No they were very common for low pressure steam heating of buildings
pre WW2 especially in America,
The technology is still in use but only for water boilers.

They use similar technology to cast iron radiators.
Trevethicks first loco in Merthyr Tyfil had a cast iron boiler
apparently. But it was very low pressure. The thing only ran at 2mph.