OK B3 SC

OK B3 SC is a basic AC/DC stick electrode designed for welding creep‑resistant 2.25% Cr‑1% Mo alloyed steels such as SA‑387 Grade 22 and A335 Grade P22, delivering high toughness even after step‑cooling treatments.

Key Features

• Basic covering suitable for AC and DC welding
• Very low impurity levels (X‑bar max 10) for temper‑embrittlement resistance
• Vacuum‑packed VacPac™ packaging ensures dry, ready‑to‑use electrodes
• Approved to CE, UKCA and VdTÜV standards

Specifications

• Classifications: SFA/AWS A5.5 : E9018‑B3 H4 R, EN ISO 3580‑A : E CrMo2 B 32 H5
• Approvals: CE EN 13479, UKCA EN 13479, VdTÜV 19612
• Welding Current: DC+‑, AC
• Diffusible Hydrogen: Max 4 ml/100 g
• Alloy Type: Low alloy (2.25 % Cr, 1 % Mo)
• Coating Type: Basic covering
• Min AC OCV: 65 V
• Deposition Data (example): 3.2 × 350 mm – 75‑145 A, 23 V, 60 % efficiency, 0.8‑1.2 kg/h

Applications

• Refineries, petrochemical and chemical plants
• Power generation facilities
• Pressure vessels and related heavy‑industry components