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In the process of crude oil storage and transportation, due to the high sulfur content in crude oil, ordinary steel is exposed to wet H2S environment for a long time, which is prone to hydrogen-induced cracks and hydrogen sulfide stress corrosion cracking, burying a major safety hazard for safe production.
In response to the above problems, hydrogen-resistant steel has been widely used in major domestic petrochemical, thermal power, desulfurization tower and other projects due to its good resistance to hydrogen-induced cracking and sulfide stress corrosion cracking. Common grades are 16MnR (HIC), Q345/Q355 (HIC), API 5L X52, ASTM A516 Gr.70 (HIC).
At present, Chinese steel mills have completed independent production of hydrogen-resistant steel, successfully replacing imported products. With the gradual development of large-scale petrochemical equipment, in order to improve production efficiency, the market urgently needs a high-efficiency welding material for production welding. Our company has launched a submerged arc welding wire and flux that match the base metal with excellent resistance to hydrogen-induced cracking and sulfide stress corrosion cracking.
The physical and chemical properties of the hydrogen-resistant steel submerged arc welding wire GWL-W10KHMSHA with flux GXL-121 developed by our company are as follows:
product introduction
|
Category |
Product name |
Standards compliant |
|
Welding wire |
GWL-W10KHMSHA |
AWS A5.17 EH10K GB/T 5293 SU10 |
|
Flux |
GB/T 36037 S A FB1 ISO 14174 SA FB1 |
|
|
Features |
||
| 1.Submerged arc welding wire and flux for 490Mpa class hydrogen-resistant steel;
2. The wire composition is pure, and the P.S impurity content is low 3. Fluorine-alkali flux, low impurity, suitable pH, taking into account manufacturability and mechanical properties 4.HIC SSC test can meet the requirements |
||
Chemical Composition of Welding Wire
|
Category/Nmae |
GWL-W10KHMSHA |
|
|
Chemical Composition(wt %) |
C |
0.045 |
|
Mn |
1.05 |
|
|
Si |
0.40 |
|
|
P |
0.008 |
|
|
S |
0.003 |
|
|
Cu |
0.008 |
|
|
Mo |
0.20 |
|
Typical values of mechanical properties of deposited metal
|
Category/Nmae |
GWL-W10KHMSHA GXL-121 |
|
|
Sample status |
AW |
620℃*12h |
|
Yield Strength(Mpa) |
455 |
425 |
|
tensile strength(Mpa) |
535 |
510 |
|
Elongation(%) |
30.0 |
29.5 |
|
-20℃ impact KV2(J) |
280 |
290 |
|
HB |
180 |
170 |
The hydrogen-resistant steel submerged arc welding wire GWL-W10KHMSHA combined with flux GXL-121 developed by our company has excellent welding workability. The performance of HIC and SSC has passed the third-party inspection. The welding pictures and inspection reports are shown in the figure below:
Scrubber
Picture of welding operation in groove
Ningbo Honest Metal Materials Co., Ltd. Hydrogen-resistant steel welding consumables include metal powder cored wire, hand electrode, and solid wire, with a complete range and excellent performance, which can be used in different welding methods and under various working conditions. Welcome to buy.
More information send to E-mail: export@welding-honest.com
Post time: Feb-14-2023