A friend called and asked me if a welder qualled to D1.1 on A36 is also qualified on AISI 1045
I looked through my copy of the code and have done a bit of googling and have not found AISI 1045 to be one of the prequalified materials listed in table 3.1 nor is it listed in code approved base metals requiring qualification in table 4.9
Am I missing something simple here? I am not well versed in AISI designations and have found a number of ASTM designations that appear to fall under AISI 1045 including:
ASTM A29 , ASTM A510 , ASTM A519 , ASTM A576 , ASTM A682....... Unfortunatly none of these seem to appear in D1.1... Or I'm looking right over them somehow...
Or is the 1045 a medium carbon steel and this is why I'm not seeing it covered?
I"m also looking at B2.1 and not really finding much help there in it's much larger base metal table (IV-1)
Is there another designation for AISI 1045 that is covered in D1.1 or is this a material outside the scope of the code? I have a sinking feeling that I'm just not reading the code correctly.
Thanks in advance folks
Lar
i think that 1045 is just a grade reference
1045 is a medium carbon " straight " ( that is unalloyed ) steel _
The weldability can be considered to be 'good' under relatively high preheat AND postheat -
To get back to your question your welder would need special certification and a limited WPS and WPQ
would be required -
The carbon content is approximately 0.45%. Relatively high compared to many prequalified steels listed in D1.1. Preheat is required. The temperature is dependent on the thickness and a low hydrogen process would be recommended.
Best regards - Al
Ravi, just wondering why the welder would need a special cert for this mat. We weld this mat regularly so any info would be appreceiated.
The welder's certification would have to be outside of the scope of D 1.1 since this is not a mentioned
steel within D 1.1
Is not the welder cert showing his/her ability to lay the weld, would not this be more under a PQR/WPS catagorey?
Again , since this is not a listed steel anywhere in D - 1.1 code or the ASME codes you still need something ( a procedure (s) )
for this to be under the auspices of - and yes , it would consist of a PQR and a procedure - for 1045
By BillC 
Date 09-08-2008 17:25
Edited 09-09-2008 00:26
AISI/SAE 1045 steel has a yield strength below 100ksi for HR and CD conditions, so it could be within the scope of D1.1. Since it is not listed in Tables 3.1 or 4.9, it must be qualified in conformance with Section 4.
Base metal is not an essential variable in AWS D1.1 Table 4.12 "Welding Personnel Performance Essential Variable Changes Requiring Requalification."
So, I think the welder is qualified to weld 1045 steel if the 1045 WPS and the A36 WPQR are consistent with respect to the essential variables of Table 4.12.
Regards,
If using SMAW, 1045 steel would require an F number higher than what the welder probably tested with.
Brian
Lawrence,
D1.1 specified listed material, while ASME specified approved material.
D1.1 does not limit the use of material (except the strength and thickness limit), you can use whatever unlisted materials as long as you qualified it seperately.
Welder are qualified within his limitation on all essential variable, and base material is not an essential variable.
In this case, it is important to have a WPS qualified on AISI 1045 (unlisted) for this welder to weld within his range of qualification.
Regards,
Noel Tan
I'd say he's ready to go to work if the Farm Code applies.
Al
