ESAB 4800404000 Unitrode OK 48.00 7018 4.0mm x 450mm (18.0kg)

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ESABOur Code: 0412 ESAB's Code: 4800404000 Shelf: EPS01 Group: 006

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Features

  • General-purpose electrode for manual metal arc welding of carbon and carbon manganese steels
  • Deposits tough, crack-resistant weld metal
  • Low moisture absorption coating
  • H4 R hydrogen classification approved
  • Low diffusible hydrogen (≤4.0 ml/100 g) to minimize cold cracking
  • High deposition efficiency for increased productivity
  • Excellent weldability in vertical-up position
  • Exceptional weld bead appearance
  • Tested and compliant with NACE TM0177 and TM0284 standards
  • Insensitive to base material composition, suitable for welding under difficult stress conditions

Specifications

Weight 18 kg
Length 45 cm
Diameter 4.0 x 450.0 mm
Amps 120-190 A
Volts 24V
Fusion time per electrode at 90% I max 92 seconds
Deposition rate at 90% 1.76 kg/h
Efficiency 71%
Number of electrodes per kg weld metal 22
Last Modified 28/06/2025, 08:25:34
EAN Code 7330129004256
Width 0.4 cm
Data Sheet https://expressweldcare.co.uk/wp-content/uploads/2023/09/ESAB-OK-48.00-Mild-Steel-Electrodes-E7018-Datasheet.pdf
Type Stick Electrode (SMAW)
Classification SFA/AWS A5.1: E7018 H4 R; EN ISO 2560-A: E 42 4 B 42 H5
Approvals ABS: 3Y H5; BV: 3Y H5; CE: EN 13479; DB: 10.039.12; DNV-GL: 3 YH5; LR: 3Y H5; PRS: 3Y H5; RINA: 3Y H5; RS: 3Y H5; VdTÜV: 00690
Industry Applications Civil Construction; Energy; Industrial and General Fabrication; Light Fabrication; Marine and Offshore
Welding Current DC+(-)
Diffusible Hydrogen <4.0 ml/100 g (<3.0 ml/100 g typical)
Alloy Type Carbon Manganese
Coating Type Basic covering
Yield Strength (As Welded) 475 MPa
Tensile Strength (As Welded) 565 MPa
Elongation (As Welded) 29 %
Charpy V-Notch Impact (AWS, −30 °C) 130 J
Charpy V-Notch Impact (ISO, −40 °C) 115 J
Typical Weld Metal Analysis C 0.06 %; Mn 1.1 %; Si 0.5 %
Deposition Data (4.0 × 450 mm) Current 120–190 A; Voltage 24 V; Efficiency 71 %; Fusion time 92 s; Deposition rate 1.76 kg/h

Summary

The ESAB 4800404000 Unitrode OK 48.00 7018 is a 4.0mm x 450mm electrode weighing 18.0kg, ideal for manual metal arc welding of carbon and carbon manganese steels. It deposits tough, crack-resistant welds and features a low moisture absorption coating. It offers high welding speed and efficiency, especially in vertical-up positions, and is insensitive to base material composition. With low diffusible hydrogen, it minimizes cold cracking risks, ensuring excellent weldability and appearance.

Documentation

A reliable, general purpose electrode for manual metal arc welding of carbon steels, carbon manganese steels and fine-grained carbon manganese steels with elevated yield strength. 

OK 48.00 deposits a tough, crack-resistant weld metal.  

The coating is of the low moisture absorption type. High welding speed in the vertical-up position 

OK 48.00 is insensitive to the composition of the base material within fairly wide limits.  

The electrode can be used for welding structures where difficult stress conditions cannot be avoided 

4 R approved 

Low diffusible hydrogen to reduce the risk for cold cracking 

Outstanding low moisture pick up 

High efficiency bringing productivity 

Extremely good weldability in vertical up position 

Exceptional weld appearance

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