Outershield® MC710RF-H to reduce your welders exposure to fume

In today’s world of increased competitiveness and high pressure on fabricators to increase the safety of using metal cored wires for their welding jobs, Outershield® MC710RF-H can provide a competitive edge. Health and safety aspects have always been an important part of welding practice1.
Today, manufacturers can choose welding consumables that provide both excellent productivity and lower generation of welding fume. This is in line with continuing industry trends toward the reduction of welder exposure to welding fumes and control of the welding fumes generated.

Outershield MC710-H is widely applied in industry and has gained popularity because it combines ease of use and high productivity with good mechanical properties. Being one of the best consumables in this group, it reflects typical advantages of metal cored wires:
► Lower welding costs coming from higher productivity, both on CV and advanced pulse modes,
► More flexible and well directed arc, features helping to reduce training time and increase quality of welds,
► Regular and spatter free welds combined with resistance against porosity,
► Similar to GMAW welding techniques and exactly the same types of power sources applied.

Metal cored wire, such as Outershield MC710-H, is a very good solution for thin sheet material, and is also one of the best solutions for semiautomatic welding of multipass welds and thicker plates. Metal cored wire, however, is typically not considered a low-fume generating welding process. Per Figure 1, below, the FER for the MCAW (M21) process is typically lower than the FER of the GMAW (CO2) process and higher than the FER of the GMAW (Pulse)2 process.

Fume generation rates

Fig.1. Information on fume generation rates, arc welding processes. Source: A Guide to Reducing Welding Fumes, Welding Journal, January 2016, pp. 50-57.

Fume Emission Rate of classical Lincoln Electric and other metal cored is illustrated in more detailed way in Fig. 2.

Fume Emission Rate test results

Fig. 2. Fume Emission Rate test results: position of standard Lincoln Electric metal cored, E70C-6M class. Test conditions: WFS 11.6m/min, U=31.4-32.4V. Source: internal tests.

Welding safety at first manufacturers have a number of options in choosing optimal welding consumable to weld with optimum productivity and lower emission of hazardous substances. Continuing trend towards the reduction of welder exposures to welding fumes is observed. Welding fumes containing hazardous dust particles are controlled and suppliers of welding consumables have to supply information on Fume Emission Rate (FER) and/or chemical composition according to ISO 15011.

Lincoln Electric’s research and development team have been working to create new possibilities to address industry needs, such as reduction of welding fume generation. Through the innovative use of raw materials, Lincoln Electric is proud to present the new Outershield® MC710RF-H. The electrode is classified as:
- AWS A5.18 E70C-6M H4,
- EN ISO 17632-A: T 46 3 M M 2 H5.

Customer welding trails. Outershield MC710RF-H 1.2mm

Fig 3. Customer welding trails. Outershield MC710RF-H 1.2mm.

FER with different currents and 32V

Fig. 4. Fume Emission Rate as a function of welding current, U=32V.
Red color: LE standard T 46 3 M M 2 H5 grades
Blue color: Outershield MC710-RF-H

Outershield MC710RF-H has the same performance characteristics of all metal cored wires from the Outershield range:
► Excellent weldability and feedability,
► Spatter free and focused arc,
► Regular welds with very little slag ,
► Good mechanical properties according to classification.

In addition to these performance characteristics, Outershield MC710RF-H offers up to a 24% reduction in Fume Emission Rate comparing to Outershield® MC710-H.
Referance2 (Fig. 1) describes the typical range of FER for metal cored wires as between 5 and 22mg/s (0,3-1,3g/min).  Outershield MC710RF-H gives FER between 6 and 8 mg/s when welding at industrial parameters and is definitely one of the lowest fume generating metal cored wires in its class.

If outstanding weldability and productivity, combined with reduced emission of fumes, is important to you, Outershield MC710RF-H is the product you should consider.

1. http://www.lincolnelectric.com/en-us/consumables/Pages/ghs-guidelines.aspx
2. A Guide to Reducing Welding Fumes, Welding Journal, January 2016, pp. 50-57.

The selection and use of specific products sold by Lincoln Electric is solely within the control of, and remains the sole responsibility of the customer. We do not warrant or assume any liability with respect to the information or advice contained herein, and the provision of such information or advice does not create or alter any warranty on our products.  Any express or implied warranty that might arise from the information or advice, including any implied warranty of merchantability or warranty of fitness for a particular purpose, is specifically disclaimed. The referenced test results were obtained from welding fume produced and tested according to prescribed standards. Actual results may vary. Workplace conditions and safety are the responsibility of users and employers. Have an industrial hygienist check worker exposure levels to confirm you are below applicable OELs for your application. Read and follow applicable regulations, product labels and safety data sheets when using our products. This information is accurate to the best of our knowledge on the date provided.