Not logged inAmerican Welding Society Forum
Forum AWS Website Help Search Login
Up Topic Welding Industry / Technical Discussions / Table 3.3 of AWS D1.6
- - By cwb_qc Date 01-16-2002 22:12
We would like to know if there is a mistake in table 3.3 of AWS D1.6 concerning the filler metal correspondance with base metal? Clause 3.0 requires a filler metal with a minimum tensile strenght equal or higher than base metal strenght. But table 3.3 states the opposite, ex: with a wire ER308L we could not weld 304L base metal. Any discrepancy?

Parent - - By DGXL (***) Date 01-17-2002 16:58
Filler metal usually matches or exceeds the base metal mechanical properties. The "Clause" (Section 3.0 Scope) specifies: "...prequalified WPS's shall equal or exceed ...specified base metal strength..."

Table 3.2 (prequalified base metal) denotes alloy designation 304L with a 75 ksi tensile.
Table 3.3-Group B (prequalified filler metal) denotes alloy designation ER308L with a 75 ksi tensile as well.

I don't think there's any discrepency on this one.
Parent - By cwb_qc Date 01-18-2002 15:50
We understand that the ASTM A511 & A554 type 304L is in base metal group B with a minimum tensile strenght of 75ksi and it match filler metal group B witch is also 75ksi.

But if we look for ASTM A240 type 304L, it is in base metal group A with a 70ksi minimum tensile strenght. As per clause 3.0 we can use ER308L filler metal (75ksi) to weld ASTM A240 type 304L (70ksi), but note 2 of table 3.2 required corresponding filler metal group of table 3.3. Therefore as per table 3.3 we could not use filler metal group B (ex: ER308L) to weld base metal group A.

Futhermore, in table 3.3 how come we can use filler metal group A to weld base metal group B of table 3.2. This is base on the note of table 3.3:
"Group A also includes all of Group B base metal of table 3.2".
That goes against clause 3.0.

Thank you for your time.
Up Topic Welding Industry / Technical Discussions / Table 3.3 of AWS D1.6

Powered by mwForum 2.29.2 © 1999-2013 Markus Wichitill