Description
Welding electrodes RS 48.18 have outstanding welding and processing characteristics, designed for manual arc welding and surfacing shipbuilding steels of normal and increased strength, carbon and low-alloy structural steels with ultimate strength up to 490 MPa, when higher demands are posed to the metal of welded seams in terms of plasticity and impact viscosity.
Designed for manual arc welding in all spatial positions. Can be used from both AC and DC power sources.
Electrodes with basic coating (with iron powder) and low content of hydrogen provide a low defect level of weld seams and low hydrogen content in deposited weld metal, as a result of which the probability of cracks formation is significantly lower than when using electrodes with other coating.
The presence of iron powder in the coating of electrodes improves performance. High quality welds with high impact viscosity at low temperatures (up to -30°C). Increased plasticity.
Characteristics
Welding position:
РА, РВ, РС, РD, РЕ, РF, PG.
Application:
Fit for welding of critical carbon and low-alloyed steels.
Used in construction, ship-building, welding of pipes, boilers, pressure vessels.
General guidelines:
Electrodes require baking before welding for 1 hour at a temperature of 350-380°С.
The surface shall be clean and free from dust, oil and other impurities before welding.
Short-arc welding shall be applied.
AC, DC±
| Diameter (mm) | 2.5 | 3.2 | 4.0 | 5.0 |
| Length (mm) | 350 | 350 | 400 | 400 |
| Current (A) | 60 - 100 | 100 - 150 | 150 - 210 | 210 - 250 |
Chemical composition, %
| С | Mn | Si | S | P | Ni | Cr | Mo | V |
| Required values | ≤0,10 | 0,85-1,40 | ≤0,65 | ≤0,030 | ≤0,035 | ≤0,30 | ≤0,20 | ≤0,30 | ≤0,08 |
| Received values | 0,06 | 1,00 | 0,30 | 0,015 | 0,020 | 0,030 | 0,035 | 0,005 | 0,004 |
Mechanical properties of deposited metal:
| Tensile Strength, Mpa | Yield Strength, Mpa | Elongation, % | Impact toughness, J
-30℃ |
| Required values | 490-660 | ≥400 | ≥22 | ≥47 |
| Received values | 590 | 480 | 28 | 90 |
Precautionary measures:
Welding can emit hazardous vapors and gases to health!
Avoid breathing these vapors and gases!
Ensure proper ventilation!
Wear appropriate eye and body protection!
