AKR407L
Standard:
EN ISO 3580 B E6216 2C1M
AWS A5.5 E9015-B3
GB/T 5118 E6015-B3L
Description: AKR407L is a kind of low carbon heat-resistant steel electrode with low-hydrogen natrium type coating. It has excellent technological performance, low spa-tter, stable arc, good slag detachability, beautiful appearance of weld. DCRP (Direct Current Reversed Polarity). All-position welding. The weldments should be given preheating to 160~220℃ before welding. The weldments should be given tempering at 680-720℃ after welding.
Application: Used for welding Cr2.25%-Mo1.0% (like 2.25Cr1Mo) heat-resistant steel below 550℃ such as high temperature and high pressure pipes, chemical machinery, petroleum cracking unit ,etc..
Typical Chemical Composition(%):
C:0.05 Mn:0.90 P:0.030 S:0.030 Si:1.0 Cr:2.0-2.5 Mo:0.90-1.20
Typical Mechanical Properties(%):
Tensile strength (MPa) : ≥550
Yield Stress (MPa) : ≥460
Elongation (%) : ≥15
Impact values (J) : ≥27J/normal temperature
Notes on Usages:
1.The electrodes must be baked at350~380℃for an hour before welding and used as soon as baking is completed.
2.The stains on the weldments, such as rust, oil stains, moisture, etc., must be cleared away before welding
