Features
- H4 R approved low-hydrogen electrode classification
- Low diffusible hydrogen (< 4.0 ml/100g) reduces risk of cold cracking
- Outstanding low moisture absorption to maintain coating integrity
- High welding speed and efficiency for increased productivity
- Excellent weldability in vertical-up positions
- Deposits tough, crack-resistant weld metal
- Insensitive to variations in base material composition
- Suitable for welding structures under difficult stress conditions
- Tested and approved per NACE TM0177 and TM0284
- Compatible with DC+(-) welding current
- Carbon Manganese alloy type for robust weld properties
- Basic covering coating ensures smooth arc performance
Specifications
Last Modified | 28/06/2025, 08:25:24 |
Weight | 16.8 kg |
Length | 45 cm |
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: EN 13479; DB: 10.039.12; DNV-GL: 3Y H5; LR: 3Y H5; PRS: 3Y H5; RINA: 3Y H5; UKCA: EN 13479; VdTÜV: 00690 |
Welding Current | DC+(-) |
Diffusible Hydrogen | < 4.0 ml/100g |
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 |
Chemical Analysis (% C) | 0.06 |
Chemical Analysis (% Mn) | 1.1 |
Chemical Analysis (% Si) | 0.5 |
Deposition Data (6.0 x 450 mm) | Current 220–340 A; Voltage 26 V; Efficiency 80 %; Fusion time 97 sec at 90 % I max; Deposition rate 3.88 kg/h |
Summary
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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