AWS A5.9 ER316 MIG TIG

Applications and Features :

• Weld metal is austenite structure with 18%Cr-12%Ni-2%Mo.

• It has superior corrosion resistance to acetic acid, phosphoric acid, acetate and phosphate due to additional Mo content.

• It is ideal for welding chemical vessels (AISI 316) or stainless steel with 13% Cr or 18% Cr that does not require PWHT.

 

Welding Instruction

(1) Use Ar blend with 1~2%O2 for high current, spray transfer welding. (2) Use Ar blend with 1~2%CO2 for low current, short-circuit transfer welding.

Typical Chemical Composition of Weld Metal (wt. %) (Shielding Gas : Ar+2%O2)

C

Si

Mn

P

S

Cr

Ni

Mo

0.018

0.42

1.91

0.012

0.009

19.14

12.63

2.53

Typical Mechanical Properties of Weld Metal (Shielding Gas : Ar+2%O2)

Tensile Strength N/mm2(kgf/mm2)

Yield Strength N/mm2(kgf/mm2)

Elongation %

550(56.0)

380(38.7)

39

Size and Suggested Operating Range (DC+)

Diameter         (mm)   Operating range

0.8

0.9

1.0

1.2

1.4

1.6

Ar+1~2%CO2

Amp

40~120

60~140

80~160

100~210

—

—

Volt

15~20

15~21

16~22

17~22

—

—

Ar+1~2%O2

Amp

160~210

170~260

180~280

200~300

210~320

220~330

Volt

24~28

24~30

24~30

24~30

24~32

24~32