Xiang Welding Industrial Co Ltd
AWS A5.18 ER70S-4
 Welding Wire ER70S-4
MIG welding wire AWS A5.18 ER70S-4,welding wire has CO2 or Ar+CO25%-20% as shielding gas. It has excellent welding performance. It has good one-time shaping performance. When used in argon-rich mixed gas arc welding, the bead is delicate and beautiful.
Welding Wire ER70S-4
Application
AWS A5.18 ER70S-4 used for welding low-carbon steel and some low-alloy steel structures.
Chemical Composition (%)
Reference Current (DC+)
Welding Positions:
Notes:
1.The welding electrodes should be preheated 2 hour at 300~350℃ before welding.
2.The impurities such as rust, oil stains and moisture must be cleared off of the work piece.
Mechanical Properties of Deposited Metal (Ar+20%CO2 Gas shielded)

Chemical Composition

C

Mn

Si

S

P

Ni

Cr

Mo

V

Cu

Guarantee Value

0.06~0.15

1.00~1.50

0.65~0.85

≦0.025

≦0.025

≦0.15

≦0.15

≦0.15

≦0.03

≦0.50

General Result

0.085

1.05

0.718

0.014

0.014

0.005

0.018

0.006

0.003

0.106

Test Item

Rm(N/mm2)

Rel/Rp0.2(N/mm2)

A (%)

KV2(J)-30℃

Guarantee Value

≧500

≧420

≧22

Not Required

General Result

540

450

30

93、87、95

Size(mm)

Current range (Amps)

GAS flow rate(L/min)

Φ0.8

50~100

15

Φ1.0

50~220

15~20

Φ1.2

80~350

15~25

Φ1.6

170~550

20~25