Equivalent Spec
Equivalent Spec
(OP)
Hi All!
We are working on a job to make forgings to a GE spec BA50A420.
We are at a loss to understand to what standard spec, such as AISI,ASTM,SAE or UNS can this grade be purchased.
The percentage composition of key elements is as follows;
C 0.25% - 0.33% - Mn 0.20% - 0.80% - Si 0.35% max
P 0.012% max - S 0.010% max - Ni 2.50% - 3.50%
Cr 1.3% - 2.0% - Mo 0.20% - 0.70% - Cu 0.35% max
V 0.07% - 0.15%
Does anybody know the equivalent AISI, ASTM, UNS or SAE grade for this chemistry? Appreciate any help or pointers in this regard.
Thanks
We are working on a job to make forgings to a GE spec BA50A420.
We are at a loss to understand to what standard spec, such as AISI,ASTM,SAE or UNS can this grade be purchased.
The percentage composition of key elements is as follows;
C 0.25% - 0.33% - Mn 0.20% - 0.80% - Si 0.35% max
P 0.012% max - S 0.010% max - Ni 2.50% - 3.50%
Cr 1.3% - 2.0% - Mo 0.20% - 0.70% - Cu 0.35% max
V 0.07% - 0.15%
Does anybody know the equivalent AISI, ASTM, UNS or SAE grade for this chemistry? Appreciate any help or pointers in this regard.
Thanks





RE: Equivalent Spec
Why would you have bid on a job without even knowing what you were delivering?
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RE: Equivalent Spec
RE: Equivalent Spec
It looks like modified versions of 4330V may meet.
rp
RE: Equivalent Spec
RE: Equivalent Spec
We intend to ask for deviation on the chemistry. There are a few more parts that require ASTM A470 in sufficient quantities and we have no problem with them. This is something that we are willing to accomodate if we find the standard composition (or slightly modified but available) so we can purchase it off the shelf from stock. As dbooker630 pointed out we can procure the steel from any standard steel mill but we need to buy one full heat and we do not need more than 20K lbs for this item. Even if we decide to buy the steel the turn-around time is minimum 8 weeks and we are not sure we'll consume all of it for we have never processed this grade of steel before. Thanks for all of your help.
We shall propose alternate chemistries and probably a couple more similar grades that are readily available and see how it goes.
As regards buying the software from Genium, is this software specific to GE specs or is it something that can be used to find equivalent grades of steel universally? If it is specific to GE specs, we are not sure if the purchase can be justified for a one time use. This may be a one time job for all we know. Thanks for letting us know of the software though.
Regards