OK 61.25 is a basic coated, stainless-steel electrode of the 308H type. The electrode is designed for high-temperature applications in petrochemical and chemical process plants. Ferrite will transform to brittle phases when exposed to higher temperatures. However, due to the low ferrite content level (max. FN 5), the amount of embrittlement which can occur in the weld metal is rather limited and controlled. The maximum temperature it can be exposed to is 800°C. It is not suitable for applications exposed to creep.
Typical Charpy V-Notch Properties
|Impact Value||Testing Temperature|
|as welded aws|
|83 J (61 ft-lb)||-18 degC (0 degF)|
|67 J (50 ft-lb)||-40 degC (-40 degF)|
|95 J (70 ft-lb)||20 degC (68 degF)|
|100 J (74 ft-lb)||1000 hr||720 degC (1328 degF)||20 degC (68 degF)|
Typical Tensile Properties
|Tensile Strength||570 MPa (83 ksi)||600 MPa (87 ksi)|
|Yield Strength||300 MPa (44 ksi)||430 MPa (62 ksi)|
|Elongation||45 %||45 %|
|Testing Time||1000 hr|
|Testing Temperature||720 degC (1328 degF)|
|Current||Deposition Rate @ 90% I max||Diameter||Deposition Efficiency (%)||Number of electrodes/kg weld metal||Voltage|
|55-85 A||47 sec||0.9 kg/h (2,0 lb/h)||2.5 x 300.0 mm (0.098 x 11,8 in.)||62 %||93||23 V|
|75-110 A||66 sec||1.2 kg/h (2,6 lb/h)||3.2 x 350.0 mm (1/8 x 13,8 in.)||59 %||49||23 V|
|80-160 A||68 sec||1.8 kg/h (4,0 lb/h)||4.0 x 350.0 mm (5/32 x 13,8 in.)||61 %||32||24 V|
EN ISO 3581-A : E 19 9 H B 2 2
SFA/AWS A5.4 : E308H-15
NAKS/HAKC 2.5-4.0 mm
Seproz UNA 272580
|Approvals are based on factory location. Please contact ESAB for more information.|
|Alloy Type||Austenitic CrNi|
|Ferrite Content||FN 2-5|
Typical Weld Metal Analysis %
|Typical Weld Metal Analysis %|
|0.06 %||18.8 %||1.7 %||0.06 %||9.8 %||0.3 %||4 %|
How to purchase OK 61.25
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