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Type

Model

Chemical composition

Mechanical prosperities

Usage

J421

E4313
(E6013)

C≤0.10
Mo0.32-0.55
Si≤0.30

Rm440～570MPa
Rel≥355MPa
A≥22%
Akv≥47J(0℃)

For welding low carbon steel light-gauge sheet structures

THJ421X

E4313

C≤0.10
Mo0.32-0.55
Si≤0.30

Rm≥420MPa
Rel≥330MPa
A≥17%
Akv≥27J(0℃)

Used for welding low carbon steel structure and galvanized steel, applications in thin made downward welding and intermittent welding

THJ422

E4303

C≤0.10
Mo0.32-0.55
Si≤0.25

Rm≥420MPa
Rel≥330MPa
A≥22%
Akv≥27J(0℃)

For welding key structures of low carbon steel as well as low-alloy steel .

THJ422GM

E4303

C≤0.10
Mo0.32-0.55
Si≤0.25

Rm≥420MPa
Rel≥330MPa
A≥22%
Akv≥27J(0℃)

Suitable for welding key structures of low carbon steel and low-alloy steel.

THJ423

E4301

C≤0.10
Mn0.32-0.55
Si≤0.30

Rm≥420MPa
Rel≥330MPa
A≥22%
Akv≥27J(-20℃)

For welding low carbon steel structures.

THJ425X

E4310
E4311

C≤0.20
Mn0.32-0.60
Si≤0.30

Rm≥420MPa
Rel≥330MPa
A≥22%
Akv≥27J(-30℃)

Apply to low carbon steel tube, low alloy steel tube girth, all position from top to bottom welding. When the welding one-side welding double-sided molding, easy to operate.

THJ426

E4316
(E6016)

C≤0.10
Mn≤1.25
Si≤0.90

Rm≥420MPa
Rel≥330MPa
A≥22%
Akv≥27J(-30℃)

For welding key structures of low carbon steel and low-alloy steel.

THJ501Fe18

E5024

C≤0.12
Mn≤1.25
Si≤0.90

Rm≥490MPa
Rel≥400MPa
A≥17%
Akv≥47J(0℃)

The purpose is the same as THJ501Fe15, deposition efficiency is about 80%.

THJ502

E5003

C≤0.10
Mn≤1.25
Si≤0.30

Rm≥490MPa
Rel≥400MPa
A≥20%
Akv≥27J(0℃)

For welding general structures of 16Mn and low-alloy steel.

THJ506

E5016
(E7016)

C≤0.10
Mn≤1.60
Si≤0.75

Rm≥490MPa
Rel≥400MPa
A≥20%
Akv≥27J(-30℃)

For welding medium carbon steel structures and some key structures of low-alloy steel like 16Mn.

THJ506D

E5016

C≤0.10
Mn≤1.60
Si≤0.75

Rm≥490MPa
Rel≥400MPa
A≥22%
Akv≥27J(-30℃)

For backing welding of medium carbon steel and low-alloy steel.

THJ506Fe

E5018
(E7018)

C≤0.12
Mn≤1.60
Si≤0.75

Rm≥490MPa
Rel≥400MPa
A≥22%
Akv≥27J(-30℃)

High efficient welding electrodes for welding low-alloy steel structures.

THJ506Fe-1

E5016-1

C≤0.12
Mn≤1.60
Si≤0.75

Rm≥490MPa
Rel≥400MPa
A≥20%
Akv≥27J(-46℃)

The purpose is the same as THJ506-1, medicine skin contains iron powder,it can improve the efficiency of the electrode deposition rates, process performance is good

THJ507

E5015
(E7015)

C≤0.12
Mn≤1.60
Si≤0.75

Rm≥490MPa
Rel≥400MPa
A≥22%
Akv≥47J(-30℃)

Suitable for welding key structures for medium carbon steel and 16Mn low-alloy steel structures.