Type

Model

Chemical composition

Mechanical prosperities

Usage

THQ-50A

ER49-1

C≤0.11
Mn1.80-2.10
Si0.65-0.95

Rm≥490MPa
Rel≥372MPa
A≥20%
AKv≥47J(Normal temperature)

Used for welding low carbon steel and some key structures of low-alloy steel

THQ50-3

ER50-3

C0.06-0.15
Mn0.90-1.40
Si0.45-0.75

Rm≥500MPa
Rel≥420MPa
A≥22%
AKv≥27J(-20℃)

For machinery, ship, vehicles and so on the high-speed welding plate.

THQ-50C

ER50-6
(ER70S-6)

C0.06-0.15
Mn1.40-1.80
Si0.80-1.15

Rm≥500MPa
Rel≥420MPa
A≥22%
AKv≥27J(-30℃)

sed for welding low carbon steel and 50kgf/mm2 grade of high-strength steel structures like vechiles,building,boat,bridge and etc.Can also be used for speed welding of sheet and pipes.

THQ50-G

ER50-G

C≤0.15
Mn1.40-1.90
Si0.55-1.10

Rm≥500MPa
Rel≥420MPa
A≥22%
AKv≥47J(-30℃)

Used for vehicle, ship, the scale of the structure and inner welding welding.

THQ-G2Si

ER50-3

C0.06-0.14
Mn0.90-1.30
Si0.50-0.75

Rm≥540MPa
Rel≥420MPa
A≥22%
AKv≥78J(-40℃)

machinery, building, ships, vehicles and so on the need of high speed sheet welding occasion

THQ-50CG3

ER50-6

C0.06-0.14
Mn1.40-1.60
Si0.80-1.00

Rm500-640MPa
Rel≥420MPa
A≥22%
AKv≥47J(-30℃)

Used for machinery, building, ships, vehicle pressure vessel steel structure and 500Mpa carbon steel and the low alloy steel welding.

THQ-50CG4

ER50-6

C0.06-0.14
Mn1.60-1.85
Si0.80-1.15

Rm500-600MPa
Rel≥420MPa
A≥22%
AKv≥47J(-30℃)

Used for machinery, building, ships, vehicle pressure vessel steel structure and 500Mpa carbon steel and the low alloy steel welding.

THQ60-1

ER60-G

C≤0.11
Mn1.40-1.80
Si0.50-0.80

Rm≥669MPa
Rel≥561MPa
A≥22%
AKv≥54J(-30℃)

Used for level 600MPa of the structure of the identity of welding and engineering machinery, container, shipbuilding, vehicle manufacturing and other industries.

THQ70-1

ER70-G

C≤0.11
Mn1.40-1.80
Si0.50-0.80

Rm≥750MPa
Rel≥640MPa
A≥21%
AKv≥74J(-50℃)

Used for level 700MPa of the structure of the identity of welding and engineering machinery, container, shipbuilding, vehicle manufacturing and other industries.