Lightweight Gospel——Introduction to Q890 high-strength steel welding consumables

With the rapid development of construction machinery manufacturing and the popularization of lightweight design of steel structural parts, Q890 high-strength steel plates are gradually applied to steel structural parts such as coal mine hydraulic supports, heavy vehicles, and construction machinery, and are mostly used in mines and various engineering constructions. Drilling rigs, electric shovels, electric wheel dump trucks, mining vehicles, excavators, loaders, bulldozers, various types of cranes and other mechanical equipment.

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Q890 high-strength steel base material (GB T 16270-2009)
1.Chemical composition of base material

Model

Q890C

Q890D

Q890E

Q890F

Metal

Wt%

C

0.20

Si

0.80

Mn

2.00

P

0.025

0.020

S

0.015

0.010

Cu

0.50

Cr

1.50

Ni

2.00

Mo

0.70

B

0.005

V

0.12

Nb

0.06

Ti

0.05

2.Mechanical properties of base metal

Model

Q890C

Q890D

Q890E

Q890F

Metal

Wt%

Thickness

mm

≤50

Yield Strength

Mpa

890

>50-100

830

>100-150

-

Thickness

mm

≤50

tensile strength

Mpa

940-1100

>50-100

880-1100

>100-150

-

elongation after break %

11

Impact absorption energy J/℃

34/0

24/-20

27/-40

27/-60

Supporting welding consumables

Wire category

Copper-free solid wire

Metal powder cored wire

product name

GMR-W80

GCR-130GM

Executive standard

AWS A5.28 ER120S-G

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3.Typical composition (deposited metal 80%Ar+20%CO2)

Model

GMR-W80

GCR-130GM

Metal

Wt%

C

0.08

0.06

Mn

1.81

1.92

Si

0.79

0.33

Ni

2.36

2.70

Cr

4.Typical mechanical properties (80%Ar+20%CO2)

0.35

0.54

Mo

0.60

0.50

P

0.007

0.008

S

0.009

0.005

Note

filler metal

deposited metal

4.Typical mechanical properties (80%Ar+20%CO2)

Name

GMR-W80

GCR-130GM

Yield Strength

Mpa

900

930

tensile strength

Mpa

950

990

elongation after break

%

17

16

Impact absorption energy

 J/℃

80/-40

60/-40

5.Typical third-party test report (GCR-130GM)
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5. Customer on-site process live (GCR-130GM)

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6.Recommended welding parameters

Name

GMR-W80

GCR-130GM

Weld specification

electric current

A

260±20

270±20

Voltage

V

27±1

28±1

welding speed

Mm/min

350±50

350±50

Temporature

150±15

150±15

For the wide application of Q890 high-strength steel, after years of research and development of welding consumables, we have two series of corresponding supporting welding consumables, solid and metal powder core, and have many engineering application achievements. Welcome customers to consult and choose!

More information send to E-mail: export@welding-honest.com


Post time: Jan-18-2023