Thursday, May 14, 2015

[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
 

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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