[MW:23278] RE: 23275] Hey Dear Experts, what is the different between welding SS316 and 317?

Hi Vincent,

The major difference is that Mo is higher than 316L.Cr Ni is also marginally higher.Please see the tables below. Higher Mo could lead to marginally higher "Ferrite" in the weld metal.If the design specification calls for controlled ferrite, it has to be ensured by consumable manufacturers.

Welding precautions are as like SS. 316L.If required by clients specifications " separate PQR" would be a requirement.

Thanks.

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Engineer/Specialist

Ontario, Canada

pgoswami@quickclic.net

pradip.goswami@gmail.com

MECHANICAL PROPERTIES(1) – As Required per AWS A5.4/A5.4M: 2006

Yield Strength(2) Tensile Strength Elongation Ferrite
	MPa (ksi)	MPa (ksi)	%	Number
Requirements AWS E316-15, -16, -17 AWS E316L-15, -16, -17	Not Specified	520 (75) min. 490 (70) min.	30 min.	Not Specified
Typical Performance(3) As-Welded 316/316L-15 316/316L-16 316/316L-17	470 (68) 425 - 450 (62 - 65) 470 (68)	620 (90) 560 - 585 (81 - 85) 585 (85)	38 40 - 54 45	4 - 12 8 - 13 13

DEPOSIT COMPOSITION(1) – As Required per AWS A5.4/A5.4M: 2006


Requirements AWS E316L-15, -16, -17	0.04 max. C	17.0 - 20.0 Cr	11.0 - 14.0 Ni	2.0 - 3.0 Mo	0.5 - 2.5 Mn
Typical Performance(3) 316/316L-15 316/316L-16 316/316L-17	0.02 0.03 - 0.04 0.03	18.6 - 19.3 18.7 - 19.2 19.1 - 19.7	12.0 - 12.4 11.4 - 12.1 11.6 - 12.7	2.2 - 2.6 2.2 - 2.4 2.1 - 2.4	0.7 0.7 - 0.9 0.8 - 1.0
%Si %P %S %Cu
Requirements AWS E316L-15, -16, -17	1.00 max.	0.04 max.	0.03 max.	0.75 max.
Typical Performance(3) 316/316L-15 316/316L-16 316/316L-17	0.72 - 0.74 0.29 - 0.39 0.61 - 0.72	0.02 0.02 0.02	0.01 0.02 0.01	0.24 0.26 0.26

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Vincent
Sent: Wednesday, May 13, 2015 11:37 AM
To: materials-welding@googlegroups.com
Subject: [MW:23275] Hey Dear Experts, what is the different between welding SS316 and 317?

Hey, it is my first time here, as post may I have your comment on welding SS317 reactor?

Any specified attention should be paid during welding supervision?

Thanks a lot.

Vincent

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