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Stainless Steel ER 309LSi

Technical Data Sheet

 

Chemical Composition Limits Weight% C Mn Si Cr Ni S P Mo Cu ER 309
ER 309LMo 0.03 max 1.0-2.5 0.65-1.00 23-25 12-14 0.03 max 0.03 max 0.75 max 0.75 max

Alloy ER 309LSi is of the same chemical composition as ER309L, with higher silicon content to improve the bead appearance and increase welding ease. This filler metal is used for welding of similar alloys in wrought or cast form. ER309LHiSil is mostly used for welding dissimilar materials such as mild steel to stainless steel, as well as for a barrier layer in stainless steel. The weld beads are exceptionally smooth due to good wetting.

Typical Mechanical Properties

Material Ultimate Tensile Strength Offset Yield Strength 0.2 % Elongation (%) psi MPa psi MPa ER 309/ ER 309LMo 82,650 570 59,450 410 38

Availability
Alloy ER 309/309LSi is a Stainless Steel TIG, MIG and SUB-ARC wire used for welding. For all stock availability contact Sales.

Specifications
AWS 5.9
ASME SFA 5.9
AWS ER 309LSi
UNS S

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Disclaimer
Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

 

ER309  ER

309L

  ER309LSi  ER309Mo  ER309LMo

 

Standard: AWS A 5.9
ER 309: Welding wire used for welding similar alloys in wrought or cast form; it is mostly used for welding dissimilar materials such as mild steel to stainless steel, as well as for a barrier layer in stainless overlays. Occasionally, it is used for welding 18-8 base metals when severe corrosion conditions exist; for some applications, welding of straight chromium steels can be accomplished with this consumable.

ER 309L: Welding wire similar to ER309, but the lower carbon content (0.03% maximum) content increases resistance to inter-granular corrosion. Aufhauser 309L is preferred over 309 for cladding over carbon or low alloy steels, as well as for dissimilar joints that undergo heat treatment.
ER 309LSi: Welding wire similar usage as ER309L, but the 0.65-1.00% silicon content improves wash and wetting behavior as well as bead appearance in the gas shielded welding processes. The weld beads are very smooth as compared with 309L or 309.

 

Wire Type

Wire Size

Spool Size

Net Weight

MIG Wire

φ0.8~1.6(mm)

D100mm&#; D200mm &#;D300mm&#; D270mm

1kg 5kg 12.5kg 15kg 20kg

TIG Wire

φ1.6~5.0(mm)

1 meter

5kg 10kg

Core wire

φ1.6~5.5(mm)

Coil or Drum

30kg &#; 500kg

 

Grade

Chemical composition of welding wire (%)

C

Cr

Ni

Mo

Mn

Si

P

S

Cu

Other

ER309

0.12

23.0&#;25.0

Additional reading:
Mastering 2507 Duplex Stainless Steel Wire Mesh Manufacturing
Ultimate Guide to Flap Discs for Sanding Wood
How to Choose a Reliable Metal Finishing End Brush Exporter?

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12.0&#;14.0

0.75

1.0&#;2.5

0.30&#;0.65

0.03

0.03

0.75

-

ER309L

0.03

23.0&#;25.0

12.0&#;14.0

0.75

1.0&#;2.5

0.30&#;0.65

0.03

0.03

0.75

-

ER309LSi

0.03

23.0&#;25.0

12.0&#;14.0

0.75

1.0&#;2.5

0.65&#;1.00

0.03

0.03

0.75

-

ER309Mo

0.12

23.0&#;25.0

12.0&#;14.0

2.0&#;3.0

1.0&#;2.5

0.30&#;0.65

0.03

0.03

0.75

 

ER309LMo

0.03

23.0&#;25.0

12.0&#;14.0

2.0&#;3.0

1.0&#;2.5

0.30&#;0.65

0.03

0.03

0.75

 

                           

 

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