OK 48.50

OK 48.50 is a general‑purpose AC and DC+(-) basic coated stick electrode designed for mild and low‑alloy steels, featuring low moisture absorption for consistent weld quality.

Key Features

• Low Moisture Absorption (LMA) coating
• Suitable for AC and DC+(-) polarity
• Good penetration and mechanical properties
• Certified to multiple international approvals

Specifications

• Classification: SFA/AWS A5.1 E7018‑1 H4R, EN ISO 2560‑A E 42 4 B 32 H5
• Approvals: ABS, BV, CE, DNV, LR, RINA, UKCA, VdTÜV
• Welding current: AC, DC+(-)
• Diffusible hydrogen: < 4.0 ml/100 g
• Alloy type: Carbon Manganese
• Coating type: Basic covering
• Minimum AC open‑circuit voltage: 65 V
• Tensile yield strength: 500 MPa (as welded)
• Tensile strength: 570 MPa (as welded)
• Elongation: 28 % (as welded)
• Charpy impact (as welded, –40 °C): 70 J

Applications

• Structural steel fabrication
• Pipeline welding
• Heavy‑section construction
• General repair and maintenance work