I've come across a reference to the above steel.
Can anyone tell me what is the difference between 20MnCr5E and the 'ordinary' 20MnCr5 I am familiar with??
TIA
Peter
We're looking to handle some sludge cake from a water treatment plant. The specification makes a specific reference to Chloride Concentration, and quotes it as
Average 486 mg/l
Maximum 2000 mg/l
I have to hold my hand up and say I've no idea what is really means. How corrosive is this? We...
I was watching an advertising video which referring to case hardened as "improving corrosion resistance".
Given that the steel used was typically C 0.18%, Mn 1.15%, Cr 1.05%, Boron treated, will corrosion resistance really be improved by case hardening??
It is being suggested by an end user that equipment conforming to ATEX must also conform to the Pressure Equipment Directive since it is being designed to contain a pressure. I thought that this was NOT the case, but currently have mislaid my reference data.
Can anyone provide clarification...
Here's the problem. I've got a failed 25mm diameter pin from a clevis joint (it's case hardened). It's 'broken straight through corresponding to the centre of the male end of the clevis.
The quoted material specification is 16MnCr5 (1.7131),
C 0.14-0.19, Mn 1.00-1.30, Si 0.4 max, S 0.035...
More years ago than I care to remember I was given a piece of software called 1E38 by Caterpillar. Plug in the chemical analysis of the steel (within limits) and it would give you predicted Jominy results. I think I got it legitimately from Caterpillar.
Anyway, it's a bit old now and runs...
We have experienced problems recently with galvanizing flaking off our mild steel plate components. It seems to occur on the plate edges.
This is a new problem to us, but someone has suggested it is because the plates are now laser cut rather than sheared and the sharp laser cut edge is the...
I'm going to show some ignorance here.
We use some 0.45% carbon components machined from forgings. Normally the forgings are slowly cooled, even annealed following forging. If the forgings were allowed to cool to, say, 350 deg C then quenched to speed up cooling how would this affect the...
We've had a few problems with some pins in 440B steel failing due to corrosion.
According to a consultants report --
.. evidence of grossly intercrystalline corrosion pits and some associated intercrystalline branched cracks that appeared characteristic of stress corrosion cracking.
...
In need of assistance!
Currently we use steel 817M40T, otherwise known as EN24T (sorry about UK steel references) for shafts in our machines. Diameters from 2" to 6".
We have an application where the machines will be used down to -35 deg C.
1) would this steel be OK?
2) if not, any...
After reading an article in today's paper I'm interested in the answers the members of this forum give to the simple question -
"Who invented the gas turbine jet engine?"
ADSK have released SP1 for Inventor 2008.
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=9852114&linkID=9242019
As we haven't installed 2008 yet we can do both at the same time ......
For use in bulk materials handling machines we have traditionally made some special bolts in 304 to resist corrosion in general (as opposed to the normal mild steel ones).
We are considering changing to 303 as our machine shop advise they can machine this quicker so reducing the cost. However...
I could do with some assistance here!
I have three points that I know the coordinates of, "C" the centre of an arc, "S" the start point of the arc, "E" the end point of the arc.
Clearly, the arc will be either clockwise or anti-clockwise about "C".
If I draw out the three points I can...
According to information I have, and more that I found on the web, AISI 430 is a ferritic stainless steel that "does not respond to hardening by heat treatment".
But I've been passed a supplier specification that states, "Material - AISI 430, heat treated".
Do they now something I don't...
