Going to try a normalize, water quench, temper. Then going to try raising the austenitizing temp, temper. Then going to try a combination of the two.
Everyone I have spoken to in real life (not online) has said the quenchent would not make a specific difference in my situation.
mfgenggear -...
4130 was the first choice, again sour service, there was discussion about using 4140.
Do you think 4140 with similar heat treat as above; Water Quench – 1600°f - 5 hours, Temper – 1215°f - 6 hours, Hardness – 235 Bhn, will work?
Water Quench – 1600°f - 5 hours
Temper – 1215°f - 6 hours
Hardness – 235 Bhn
Results:
Tensile – 400°F - 88,000 psi
Yield – Request 70,000 400°F - 63,000 psi
Elongation – 400°F - 23%
Reduction of area – 400°F - 55%
I need to get the yield up to >68,500 - any suggestions how?
Thank you
I have a database with NA equivalents to Euro grades, the following I cannot find, anyone have equivalents?:
10CrMOVNb9
22CrMoV12
21CrMoNiV4
I appreciate any assistance on this, thank you
Hi,
Forged part(s) ~220 lbs. each
Material Grade - 4130
Sour service
Yield needs to be >68,500 with testing done at 400°F
At room temperature we hit ~75,000 yield for this.
According to API 6A Appendix G, for 4130 you need to de-rate the material 88% for a testing temperature 400°F, which...
We changed ingot size from ~46" Round to ~26" square for forging of the subject line material. Forged the ingots down to H-20”, W-28”, L-21 ft, we made the switch to save time in forging (Open Die). This was the only major change in process
After cooling to 90° we placed in furnace, ramped to...
27 NiCrMoV 15-6
Y-760 Mpa
T-900 Mpa
Trying to find a NA equivalent, our history he closest I can find would be a 4330V MOD for the high Ni
Anyone worked with this before and offered or determined an equivalent I can actually offer & get from supplier?
Hello,
Forgings
Part weight – ~200 lbs
Material - 4330V per AMS 6427
Tensile – 130,000 min
Yield – 109,000 min
Impacts – 55 ft/lbs min @ RT
Hardness – ?
Looking for heat treat advice to meet mechanicals. Impacts and what hardness is what I have no history on.
Thinking quench & temper should...
Customer has specified that they want material 316ss for a forging and material must indicate NACE MR0175 and EN 10204 3.1b - Dimension ~27" Diam. x 7" thick
Both of these are new for us.
I have determined that there is no “NACE Test” that can be used to certify that a material meets MR0175...
We are forging. Customer requested a change from 2219-T62 to 2219-T6.
What's the difference, if any. What should I look out for in process?
Any heat treat information they look to be identical, I am not very experienced with Aluminum.
Thank you
Our Ingots are not re-melt VAR or VIM-VAR.
Some of the parts have been milled prior to quench, did not have influence on mechanicals (same result as hot top or spout)
We have looked at microstructure to a degree, more precise grain size. Old heat treat that was failing miserably ~2.5, new heat treat with good results 6.5-7.5.
The good result as quenched hardness's have been 451-460.
Of the three chemistries, do you see one that stands out as better for...
We need transverse -40f impacts @ 34J average no lower than 27J.
"Others" are using same ingot as us. The ingot is large but we are getting the reduction as we are doing other grades of same size ingot 58" x 103"
The finished block is saw cut from the drawn out forging. The blocks are ~43"l ...
I do not know others grain sizing. Unfortunately determining grain size is a little like putting cart before horse. We obviously know that our best results with stated chemistry in my first post, has grain size 7.5.
We are trying to determine how to move forward with new steel requisitioning...
@redpicker et el. Referring back to my first post where I summarize the chemistry - I have learned that others forging this grade have different levels of Mn , Si, cr & Mo AND they are getting the mechanicals we have had difficulty achieving;
Mn - Our Avg. 0.57 - others at (1)~0.265 & (2)0.80...
We cut a piece off of the end of the block ~10" x 10"
They are taken from the surface
We do both longitudinal & transverse
Ingot is 58" x 103"
Forging is saw cut to ~22 x 27 it is from there that we take the samples
