OK Tigrod B3 SC

OK Tigrod B3 SC is a copper‑coated, low‑alloyed chromium‑molybdenum solid wire for GTAW of creep‑resistant steels where highest toughness is required.

Key Features

• Low impurity levels with X‑bar max 10 for temper‑embrittlement resistance
• Designed for 2.25 % Cr, 1 % Mo alloyed steels (SA‑387 Grade 22, A335 P22, etc.)
• Suitable for refinery, petrochemical, chemical, power generation, pressure vessel applications
• Recommended post‑weld heat treatment (PWHT) for optimal performance

Specifications

• Alloy Type: Low alloyed (2.25 % Cr, 1 % Mo)
• Shielding Gas: I1 (EN ISO 14175)
• Classifications: EN ISO 21952‑A, EN ISO 21952‑B, SFA/AWS A5.28 ER90S‑B3
• Approvals: CE EN 13479, UKCA EN 13479
• Typical Wire Composition: C 0.08 %, Mn 0.5 %, Si 0.5 %, Ni 0.05 %, Cr 2.4 %, Mo 1.0 %
• Typical Weld Metal Analysis: Cr 2.5 %, Mo 1.0 %, X‑bar 82, J‑Factor 2.8
• Tensile Yield Strength (PWHT 1 h 720 °C): 565 MPa
• Tensile Strength (PWHT 1 h 720 °C): 670 MPa
• Elongation: 26 %

Applications

• GTAW of creep‑resistant 2.25 % Cr 1 % Mo steels
• Pressure vessels, refinery and petrochemical equipment
• Power generation components requiring high toughness after PWHT