LongTeng E7016 Low Hydrogen Carbon Steel Welding Electrode

LongTeng E7016 in brief

LongTeng E7016 is a low hydrogen carbon steel electrode listed by its manufacturer to AWS A5.1 E7016. In the LongTeng catalogue it sits between the DC-only E7015 and the iron powder E7018 entries, and it offers AC or DC electrode positive operation. Of the four carbon steel electrodes on the page it shows the highest single impact value, 170 J at minus 30 degrees Celsius, together with 31 percent elongation, the highest elongation figure in that group. Those two numbers explain why engineers who care about ductility and cold performance look at this grade.

The manufacturer describes the grade as mainly for welding carbon steel or low alloy steel, including ships built from steel grades the catalogue names as A, B, C, D and E, and the important frames of vehicles, buildings and bridges. Seven Star LLC supplies LongTeng consumables to customers in Oman and across the GCC, with stock questions and technical follow-up dealt with from Muscat.

Values printed in the catalogue

All entries below are typical values listed by the manufacturer. They are reference test results, so rely on the batch certificate for any acceptance decision.

Chemical composition

Reference chemistry in percent: carbon 0.069, manganese 1.11, silicon 0.53, sulphur 0.009, phosphorus 0.020, chromium 0.037, nickel 0.013, molybdenum 0.002 and vanadium 0.010. The sulphur figure of 0.009 percent is the lowest among the four carbon steel grades printed on that page, which is in line with the very clean, tough deposit the impact result implies.

Reference current by size

Understanding the E7016 class (general class information)

This section is about the AWS E7016 class as a whole and is not a LongTeng promise. The class has a 70 ksi minimum tensile level, is intended for all positions, and uses a potassium-based low hydrogen covering that supports a stable arc on alternating current as well as DC electrode positive. The difference from E7018 is that the covering carries little or no iron powder, so deposition is a little lower and the bead is slightly more convex, while arc starting and stability are good on modest AC sets. Typical advice for the class applies: use electrodes straight from sealed containers, keep them in a warm holding oven at the workplace, rebake exposed rods according to the manufacturer and code, and keep a short arc. Preheat is set by the steel composition, thickness and the governing standard.

Where the manufacturer points this grade

• Carbon steel and low alloy steel welding in general.
• Ship hull construction using the steel grades named in the catalogue.
• Important load-bearing frames for vehicles, for construction work and for bridges.

Please treat the shipbuilding mention as an application note, not as a classification society approval. If your owner or class requires a certificate for LongTeng E7016, request it with your enquiry and we will ask the manufacturer.

Practical selection advice

Choose LongTeng E7016 when you need low hydrogen quality on a welding set that only provides AC, or when the listed ductility and impact values are decisive. The catalogue reports 170 J at minus 30 °C for LongTeng E7016, while E7015 lists 140 J and E7018 lists 145 to 150 J. Because these numbers come from individual tests, treat them as reference values and do not use them to rank the grades in a strict way. When procedure qualification records name an exact classification, keep to it.

Fabrication teams specifying equipment can also browse the Lincoln Electric Power Wave S500 and the ESAB Rebel EMP 285ic, and maintenance planners may open the Kobelco Low Level Alarm Pump Assembly page. Confirm in the machine manual that the set is suitable for stick welding at the amperage you plan to use for LongTeng E7016.

Shop-floor routine (general guidance)

Good results with a low hydrogen electrode come from routine. Dry the joint, brush it bright, set the amperage inside the band for the diameter, and hold a short arc so that the shielding from the covering stays intact. Start the bead slightly ahead of the previous crater, chip each slag layer fully, and watch the interpass temperature on thicker material. For vertical-up joints, a triangular or small weave motion is common. Keep a log of electrode lot numbers on critical work so that the certificate and the weld record can be matched later.

Typical project questions

Buyers usually ask three things before they order. First, whether the diameter range suits their joints: LongTeng E7016 is listed from 2.0 mm for thin or root work up to 5.0 mm for heavy fill passes. Second, whether the power source is suitable: the AC or DC+ listing means a basic transformer set can run it. Third, what paperwork is available: the catalogue extract is attached here, and a batch certificate can be requested. Working through those points early shortens the approval cycle, and it keeps LongTeng E7016 on the approved consumables list without rework.

Datasheet and ordering through Seven Star LLC

The catalogue extract that includes LongTeng E7016 is attached to this page; it also holds the E7015 entry, because both grades are printed on the same page. Send diameter, quantity, destination and certificate needs, and we will answer with a quotation. Packaging and delivery are confirmed per order. Ask for the LongTeng E7016 datasheet to read the manufacturer table in full, and ask for the batch certificate before you commit to LongTeng E7016 on critical structures.

We would rather confirm a detail with the manufacturer than guess, so if anything on this page differs from your own paperwork, tell us and we will check it.

Storage after delivery matters as much as selection. Keep cartons off the floor, away from sea-air exposure and condensation, and in a ventilated room, which is especially relevant in coastal Oman where humidity can be high. Open only what a shift will use, and record the lot number on the welding log so that every weld made with LongTeng E7016 can be traced to its certificate if an auditor asks.