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J422 

GB：E4303
 AWS：
 Application：Applicable for welding the structures with high appearance requirements, or low-alloy steel/low mechanical property requirement steel as 09Mn2etc.
  

J422                           

According with GB E4303

Introduction: J422  is a kind of carbon steel electrode with lime-titania type coating specially used for facial welding or low-alloy steel/low mechanical property requirement steel as 09Mn2. AC/DC. All-position welding. It has glossy and beautiful appearance of weld, excellent mechanical properties, stable arc, easy re-ignition, good fluidity and detachability of slag.

Applications: Applicable for welding the structures with high appearance requirements, such as ocean platforms, ships, vehicles, construction machinery, etc.

Chemical Composition of Deposited Metal (%) 

Chemical Composition 

C

Mn

Si

S

P

Guarantee Value

≤0.12

0.3~0.55

≤0.25

≤0.030

≤0.035

Mechanical Properties of Deposited Metal 

Test Item 

Rm(MPa)

ReL(Mpa)

A(%)

KV2(J)

KV2(J)

Guarantee Value

≥420

≥330

≥22

≥27(0℃)

——(-20℃)

General Result

440~500

≥340

22~32

70~115(0℃)

60~90(-20℃)

X-ray Radiographic Inspection: ⅡDegree

Reference Current (AC, DC) 

Electrode Diameter(mm) 

φ3.2

φ4.0

φ5.0

Welding Current (A) 

80~140

140~220

180~240

Packing details: In carton of 20kgs/net, consisting of 8 boxes x 2.5kgs for 2.5mm, & 4 boxes x 5kgs for other sizes.

              With/ without pallets (Fumigation-free pallets) upon customer’s request.

 

 

 

 

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