Difference between Batch and lot number

Date 10-31-2011 08:54

Hi everyone!

Is there a previous thread somewhere here discussing this subject?
This is in relation to fillermetal manufacturing and the requirements of AWS A5.01 certification.
To get the additional level of certification (Table 5.5.2 Welding Electrode and Wire Certificate Requirements) some suppliers are quoting price per batch while some on a per lot basis.
What is the difference?

My opinion is a batch refers to the "larger" part while lot refers to the "smaller" pieces of (and is traceable to) the batch.
Say batch #1234 of E-7018 with Lot#001, 002, and 003 for the 2.4mm, 3.2mm, and 4.0 mm electrode diameters respectively.

Where can I find a clear definition of this two words?

Thanks!

By jon20013 (*****)

Date 10-31-2011 11:15

Try reading from A5.01:

4.2 Definitions. The terms dry batch, dry blend, wet mix, and heat, as they are defined and used in this document, refer to discrete quantities of the components used in producing a lot of filler metal. The definition of these terms and the considerations that must be given to the identification of the components to which they apply are as follows.

and also

5. Lot Classification

By toddler (**)

Date 11-06-2011 12:41

Thanks Jon! Should have thought about it in the first place. :grin: