Any steel with 41 as the first two numbers are known as chromium molybdenum steels.
Chrome moly steel barrel.
What is the best barrel length.
So let s detail the pros of chrome molly steel barrels that have chrome lined bores and chambers first.
Why in the world would i choose an expensive stainless steel barrel over a steel barrel after learning all this information about these two steels.
Is called sae 4140 chrome molybdenum or chrome moly steel.
Alloy steels suitable barrel alloys include types having varying amounts of chromium molybdenum vanadium nickel and manganese as alloying metals.
Chromium molybdenum also called chrome molybdenum chrome moly or cr mo and chromium vanadium also called chrome vanadium or cr v are names for two families of steel alloys used in hand tool manufacturing.
That said chrome moly barrels can be just as accurate when made correctly and there is evidence a chrome moly barrel will hold its accuracy longer than a stainless barrel.
Which one is better.
These 41 steels contain 0 15 0 25 molybdenum and 0 80 1 10 chromium in their composition.
It all depends on what type of shooting you are doing.
M16 m4 mil spec barrels are made of chrome molly steel with chrome lined bores and chambers.
Chrome moly barrels always outlast stainless steel barrels but only by a narrow margin.
A popular example and perennial favorite in the u s.
When properly manufactured and heat treated they are chemically almost identical and perform similarly.
The 4140 ar barrel steel has the 41 for the first two numbers.
In europe vanadium and nickel steel alloys are preferred.