Hard to say if it is stress or fatigue. Pressures can be variable. Probably more related to cyclic stress which would fall under fatigue.
With regards to 17-4 we would age to condition H900
At H900 we would get an increase in tensile and elongation over 420. Will look at 440C to compare as...
Sorry i should have added more details.
It is from mechanical failure. It is a nozzle that can see upwards of 30,000 psi in an orifice of 0.5" x 4" long
From a real estate perspective, it is not easy for us to change the design. We looking at this to increase the wall thickness by approx 15%...
Hello All,
Looking for some advice. We make injection molds and have an issue where 420 hardened to 48-50RC is cracking in our material delivery systems.
Looking for a material with increased tensile and elongation at 120C with similar corrosion resistance.
Was thinking about using a...
thanks for the info, we have also discussed internally using belleville washers, it is an option we are investigating. Available real estate is somewhat limited.
The actual duty cycle temp is 335F. 500F would be an anomaly only if there was an equipment failure of the heat control system.
wondering if anyone has data showing the tensile strength curve of 2024-t4/t351 and 7075-t6/t651 from ambient thru to 500 F
need to make tie rods for an aluminum injection mold and require a material that has a similar coeefisient of thermal expansion as M1
thanks
