Mike,
If no transition occurred, then why did the post-WW I receivers flake so badly throughout the 1920s? Winchester was forced to make changes to their machine (carbona) bluing process to eliminate the problem, and they eventually solved the problem by switching from Nickel steel to Proof steel in the early 1930s.
Bert
WACA Historian & Board of Director Member #6571L
Here is a post Mike made about this.
https://winchestercollector.org/forum/winchester-rifles/Flaking+on+receiver+and/
Bob
WACA Life Member--- NRA Life Member---- Cody Firearms member since 1991 Researching the Winchester 1873's
Email: [email protected]
Bert
The flaking was due to the bluing process and not the steel type. I had about half a dozen receivers tested 1886, 1892 & 1894, manufactured pre 1900 – 1930s, the receiver steel was essentially the same, all with just trace amounts of NI; nowhere near the 3% NI that the barrels had.
I’m not sure how the rumor started that Winchester used Nickel Steel in the receivers, but it’s not true.
Somewhere I have an “in house” letter talking about the issues that they had at first with the machine bluing process.
Bob, thanks, BUT the post that you linked is on my response to the flaking on post 64 receivers, I know I did one on the receiver steels…. I’m just not computer/forum literate to find it.
V/R
Mike
So the question now becomes, “What did Winchester change in their machine bluing process right after WW I?” Something most certainly was changed, as evidenced by severe flaking of the bluing on many of the different models in production throughout the 1920s.
Bert
WACA Historian & Board of Director Member #6571L
I don’t believe it was a change in the machine bluing process, but more due to Winchester’s change to the machine bluing process.
If one looks at the machine bluing process: temperatures and ingredients, you can quickly see that machine bluing was a way to automate the charcoal bluing process.
I know early on that Winchester has a few issues in getting the process right, I believe that a lot of it was traced back to moisture. There is some anecdotal evidence that Winchester added another small inspection stamp and or punch to check the blue for flaking; if it flaked when stamped the part was sent back. I have yet to confirm this or identify the stamp.
V/R
Mike
I am the Marlin guy trying to cross over into the Winchester brand in an attempt to learn and compare the to companies and the fire-arms
they produced.
my question is what exactly is proof steel? I have never heard of it anywhere elese. or was this merely a name change to the nickle steel
metal for a marketing ploy
Here’s an article that Mike wrote in the Fall 2014 Winchester Collector on page 28:
https://winchestercollector.org/magazines/201409/index.html#30
GentlemenJim said
let me re ask my question What alloy did Winchester use to produce proof steel
Found this post regarding proof steel. Might be the answer to your question.
GentlemenJim said
I am the Marlin guy trying to cross over into the Winchester brand in an attempt to learn and compare the to companies and the fire-arms
they produced.
my question is what exactly is proof steel? I have never heard of it anywhere elese. or was this merely a name change to the nickle steel
metal for a marketing ploy
Jim,
Proof Steel is modern chrome-moly steel, and it is definitely different than the older Nickel Steel. Winchester made the switch from Nickel Steel to Proof Steel barrels in the early 1930s, with the Model 94 change occurring in early 1932. The first models to utilize Proof Steel receivers were the Model 70 and Model 71.
Bert
WACA Historian & Board of Director Member #6571L
Winchester’s black powder barrels were originally made out of low carbon steel, roughly .18 -.20% carbon. Winchester referred to this steel as “gun steel”; somewhat equivalent to today’s SAE 1018.
Winchester’s Nickle Steel had 3 ½ % nickel and .30%-.40% carbon. I know that Winchester sourced this steel from the Midvale and Crucible Steel Companies. I have found no reference to Winchester using Bessemer Nickle Steel (Winchester’s other steel supplier).
I have a 1916 factory internal note stipulating that all barrels were to be made out of Nickle steel, I’m not sure if this was fully implemented and if so, how long it lasted.
Winchester used another barrel steel with the industry trade name “ordnance steel”, this steel had roughly 1. % manganese and between .45% and .55% carbon.
Finally, Winchester began using steel with chromium and molybdenum (chromoly) or more specifically SAE 4140, .38%-42% carbon. SAE 4140 was originally developed by General Motors for use in car axles; sometime in the teens or twenties.
I don’t have the exact dates that these changes were made.
Compounding the confusion is that most of these steels were referred by trade or brand names, with no official SAE designation until the mid to late 40s when the Society of Automotive Engineers (SAE) began to establish standards for steel.
Probably more than you ever wanted to know
Mike
Bert H. said
GentlemenJim said
I am the Marlin guy trying to cross over into the Winchester brand in an attempt to learn and compare the to companies and the fire-arms
they produced.
my question is what exactly is proof steel? I have never heard of it anywhere elese. or was this merely a name change to the nickle steel
metal for a marketing ploy
Jim,
Proof Steel is modern chrome-moly steel, and it is definitely different than the older Nickel Steel. Winchester made the switch from Nickel Steel to Proof Steel barrels in the early 1930s, with the Model 94 change occurring in early 1932. The first models to utilize Proof Steel receivers were the Model 70 and Model 71.
Bert
Bert, I have one of the very scarce M52’s with a NS bbl. dated “31”. It is a heavyweight and has the special order round top receiver with a right side mounted M48-T. Must have been one of the first and last, NS M52’s. # 22164. Big Larry
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