The KOBELCO TRUSTARC™ LB-52NS is a premium low-hydrogen electrode specifically engineered for welding 490MPa high-tensile steel in extreme environments. While standard electrodes struggle in the cold, the LB-52NS is designed to maintain exceptional mechanical integrity and crack resistance at temperatures as low as -60°C.
As your authorized KOBELCO distributor in Malaysia, we provide genuine TRUSTARC™ solutions for critical infrastructure, including LPG carriers, storage tanks, and offshore platforms.
The LB-52NS is part of the "TRUSTARC™" family, representing Kobelco's highest tier of quality for high-integrity industries.
Extreme Low-Temperature Toughness: Delivers superior Charpy V-notch impact values at -60°C, far exceeding the capabilities of standard E7016/E7018 electrodes.
High CTOD Performance: Excellent Crack Tip Opening Displacement (CTOD) values, making it the trusted choice for offshore structures and heat exchangers.
Moisture Resistance (No Re-Drying Needed): The advanced flux coating is designed to resist moisture absorption. When using the vacuum-packed version, re-drying is not required for up to 8 hours after opening, saving time and electrical costs.
All-Position Versatility: Excellent workability in all welding positions, ensuring high-quality beads and stable arc performance for complex joints.
The LB-52NS performs reliably with both AC and DC+ power sources.
| Size (mm) | Length (mm) | Flat Position (Amp) | Vertical & Overhead (Amp) |
| 2.6 | 350 | 60 – 90 | 50 – 80 |
| 3.2 | 350 | 90 – 130 | 80 – 110 |
| 4.0 | 400 | 130 – 180 | 110 – 170 |
| 5.0 | 450 | 180 – 240 | 150 – 200 |
Yield Strength: 510 MPa
Tensile Strength: 580 MPa
Elongation: 30%
Impact Value (CVN): 100J @ -60°C
LPG Carriers: Critical hull and tank welding for liquefied gas transport.
Oil & Gas: Offshore jackets, decks, and subsea structures.
Cryogenic Storage: Low-temperature storage tanks for industrial gases.
Heavy Machinery: Equipment operating in high-stress or cold-climate conditions.
To maintain the high-performance integrity of the LB-52NS:
Re-drying Guidelines: If electrodes are exposed to air for more than 8 hours, re-dry at 350°C–400°C for 1 hour.
Short Arc Technique: Keep the arc length as short as possible to ensure proper shielding and minimize atmospheric contamination.
Heat Input Control: Avoid excessive heat input, as this can deteriorate the impact toughness values of the weld metal.
Backstep Method: Use the backstep technique at the arc start to prevent initial porosity.
The LB-52NS is approved by all major classification societies for high-tensile steel:
NK
LR
ABS
DNV-GL
BV
As an authorized dealer, we provide specialized consumables for Malaysia's most demanding industries.
Certified Traceability: Full mill certs and batch testing available.
Vacuum Packaging: Ensuring "Fresh from the Factory" performance without on-site re-drying.
Regional Delivery: Fast shipping to shipyards and fabricators in Pasir Gudang, Klang Valley, and Labuan.
Contact us today for specialized technical support or bulk pricing inquiries.
What is the difference between LB-52 and LB-52NS?
Standard LB-52 is rated for -20°C, while the LB-52NS is specifically designed for ultra-low temperature service down to -60°C, with higher impact and CTOD values.
Does the LB-52NS require an oven on-site?
If you use the vacuum-packed LB-52NS, re-drying is not needed for the first 8 hours after opening. This significantly reduces manpower and electrical costs in the field.
What is the AWS classification for LB-52NS?
It is classified as AWS A5.5 E7016-G, reflecting its specialized high-tensile and low-temperature properties.
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