LongTeng ER110S-G Carbon Steel Solid MIG Welding Wire

LongTeng ER110S-G Ultra-High-Strength Solid MIG Wire Explained

LongTeng ER110S-G sits at the top of the carbon and low-alloy solid wire range in the Longteng welding catalogue. It is listed to AWS A5.28 ER110S-G and described by the manufacturer as suitable for 790 MPa high strength weathering steel, with pressure vessels, construction machinery and hoisting machinery named as typical uses. Unlike the lower strength G wires, this one carries a deliberate nickel, molybdenum and chromium addition, and it is the only wire among its neighbours whose datasheet reports impact energy at minus 40 degrees Celsius.

Seven Star LLC, operating from Muscat, supplies LongTeng welding materials to Omani and GCC industry. This LongTeng ER110S-G page collects the datasheet values, explains them in plain engineering language and points out what still has to be confirmed on a batch certificate. Figures are typical values listed by the manufacturer, and they describe the wire as tested by the producer rather than a warranty from Seven Star LLC.

Reading the Alloy Design

The chemistry for LongTeng ER110S-G shows carbon at 0.10 percent maximum, manganese from 1.40 to 1.85 percent, silicon from 0.40 to 1.00 percent, nickel from 1.20 to 2.40 percent, molybdenum from 0.20 to 0.60 percent and chromium from 0.25 to 0.60 percent. Sulphur and phosphorus are each limited to 0.025 percent maximum, copper to 0.50 percent maximum and titanium to 0.16 percent maximum. Taken together these elements build high strength through solid solution and fine microstructure while nickel keeps the weld metal tough in cold conditions.

As general class information, a nickel content of this size is what makes it possible to reach a 790 MPa class joint and still show useful Charpy results at sub-zero temperature. The price paid is a higher sensitivity to heat input and cooling rate, so welding procedures for this wire should be qualified on the actual plate, with preheat and interpass limits chosen in line with the steel specification and the plate supplier’s advice.

Mechanical Results Printed in the Catalogue

The LongTeng ER110S-G datasheet lists typical weld metal tensile strength of 840 MPa and yield strength of 730 MPa, with elongation of 24.5 percent. Impact energy is given as 85, 93 and 75 J at minus 40 degrees Celsius. In a 790 MPa class wire, a tensile of 840 MPa leaves a modest margin above the nominal class, which is why designers working near the strength limit should always check the test certificate of the delivered batch and not rely on a typical figure.

Three impact values are shown because the Charpy test uses three specimens; the spread between 75 and 93 J reflects normal scatter in weld metal. For critical equipment, an acceptance criterion is usually written against the average and minimum of the three, so confirm those numbers on the certificate that accompanies your consignment of LongTeng ER110S-G.

Shielding Gas, Diameters and Current

The catalogue lists argon with 20 percent carbon dioxide on direct current electrode positive for LongTeng ER110S-G. Four diameters are shown: 0.8, 1.0, 1.2 and 1.6 mm. Reference current is 50 to 100 A for the smallest size, 50 to 220 A for 1.0 mm, 80 to 350 A for 1.2 mm and 170 to 550 A for 1.6 mm. Gas flow is listed at 15 L/min for 0.8 mm, between 15 and 20 for 1.0 mm, 15 to 25 for 1.2 mm and 20 to 25 L/min for 1.6 mm. Package information in the catalogue refers to reference spools for gas-shielded wire from 1 kg to 15 kg, and these should be treated as the manufacturer’s reference formats, not as warehouse availability.

Why Engineers Pick LongTeng ER110S-G

An ultra-high-strength MIG wire is usually selected for one of three reasons, and each is visible in the printed data for LongTeng ER110S-G.

• The class designation ER110S-G places it among the strongest solid wires standardised under AWS A5.28.
• The manufacturer names 790 MPa high strength weathering steel as the intended base metal.
• A nickel range of 1.20 to 2.40 percent supports toughness, and the datasheet reports impact results at minus 40 degrees Celsius.
• Molybdenum and chromium additions support strength and hardenability in the weld deposit.
• Low carbon at 0.10 percent maximum helps limit cracking sensitivity in high-strength joints.
• Four diameters from 0.8 to 1.6 mm allow the same chemistry to be used for thin and thick sections.
• Reference currents from 50 to 550 A are compatible with common inverter MIG machines.

Typical Uses in Heavy Industry

High-strength weathering steel is widely used in crane jibs, boom sections, lifting frames, mobile equipment and pressure-retaining vessels, which are exactly the fields the manufacturer lists for LongTeng ER110S-G. In Oman and the Gulf, equivalent structures include port cranes at Salalah, mining and quarry equipment, and heavy trailers working out of Sohar. Repair welding with LongTeng ER110S-G on these components calls for a matching strength wire so the repaired zone does not overmatch or undermatch the parent steel in a way the designer did not expect.

Welding equipment that supports LongTeng ER110S-G solid wire in the 1.0 to 1.2 mm range is the normal choice. Examples in our catalogue include the Lincoln Electric Power Wave S500 and the ESAB Rebel EMP 285ic. For inspection, a portable device such as the Phase II PHT-3500 portable hardness tester allows a quick check on weld and heat-affected zone hardness in the field.

Technical Specifications

The following table reproduces the values printed for LongTeng ER110S-G in the manufacturer catalogue. They are typical values listed by the manufacturer. The original page is attached as a datasheet extract.

Practical Welding Notes

When welding with LongTeng ER110S-G, keep joint surfaces clean and dry, because hydrogen from moisture, oil or paint is a leading cause of cracking in high-strength steel. Follow the plate maker’s preheat and interpass guidance and control heat input so the weld metal reaches its intended properties; excessive heat input generally lowers strength and toughness, while very low heat input with thick sections raises hardness. Store spools sealed and dry, and use clean liners and tips for stable feeding.

Call To Action

To receive a quotation for LongTeng ER110S-G, contact Seven Star LLC in Muscat with your diameter, quantity, preferred package and delivery point. We will confirm options, provide the datasheet extract and recommend that you request the batch test certificate with your order so that tensile, yield and impact results are documented for your quality file. Our team supports buyers across Oman and the GCC.