ESAB 4800504000 Unitrode OK 48.00 7018 5.0mm x 450mm (18.0kg)

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ESABOur Code: 0413 ESAB's Code: 4800504000 Group: 006

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Features

  • H4 R approved for critical applications
  • Low diffusible hydrogen (< 4.0 ml/100 g) to reduce cold‐cracking risk
  • Outstanding low moisture pick‐up and absorption
  • High deposition efficiency for improved productivity
  • Excellent weldability and high welding speed in vertical‐up position
  • Exceptional, crack‐resistant weld appearance
  • General‐purpose electrode for carbon and carbon‐manganese steels
  • Insensitive to base material composition variations
  • Tested and compliant with NACE TM0177 and TM0284 standards
  • Tough, ductile weld metal with balanced mechanical properties

Specifications

Last Modified 28/06/2025, 08:25:11
Weight 18 kg
Length 45 cm
Data Sheet https://esab.com/gb/eur_en/products-solutions/filler-metals-pdf?filename=mdm-productfamily-13201&siteid=eur_en&countryname=GBR&countrylocale=en-zz
Classifications 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/UKCA: EN 13479; DB: 10.039.12; DNV-GL: 3 YH5; LR: 3Y H5; PRS: 3Y H5; RINA: 3Y H5; VdTÜV: 00690
Welding Current DC+(-)
Diffusible Hydrogen < 4.0 ml/100 g
Alloy Type Carbon Manganese
Coating Type Basic covering
Typical Tensile Properties (As-Welded) Yield Strength: 475 MPa; Tensile Strength: 565 MPa; Elongation: 29 %
Typical Charpy V-Notch Properties AWS As-Welded at ‑30 °C: 130 J; ISO As-Welded at ‑40 °C: 115 J
Typical Weld Metal Analysis (%) C: 0.06; Mn: 1.1; Si: 0.5
Deposition Data (5.0×450 mm) Current: 190–260 A; Voltage: 24 V; Efficiency: 75 %; Fusion Time @90 % Iₘₐₓ: 99 s; Deposition Rate: 2.61 kg/h

Summary

The ESAB 4800504000 Unitrode OK 48.00 7018 is a 5.0mm 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. 4 R approved.

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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