LOW ALLOY STEEL (High Temperature)

NEXA 8018-B2

For Heat and Creep Resisting Steel

AWS A/SFA 5.5 E8018-B2
NEXA 8018-B2

Applications

  • Welding of 1.25Cr-0.5Mo, 1Cr-0.5Mo steels in refineries, power plants, chemical plants
  • Pressure vessels and Boilers
  • Cr and Cr-Mo bearing steels at elevated temperature service e.g. steam production plants, steam pipes
  • Joining P4 materials e.g. ASTM SA 182/182M Gr.F2/F11/F12, SA 213/213M Gr.T11/T12, SA 335/335M Gr.P11/P12, SA 387/387M Gr.2/11/12
  • Suitable for 13CrMo44, 15CrMo5, 15Cr3, 16MnCr5, 20MnCr5

Characteristics

  • 1.25Cr-0.5Mo type weld deposit E 55B-B2
  • Resistant to creep and heat upto 550°C
  • Preheat and interpass temperature of 150-200°C followed by PWHT
  • Radiographic quality weld deposit
  • Positional welding capability

Chemical Composition

C Mn Si Cr Mo
0.05-0.12 <0.9 <0.8 1.0-1.5 0.40-0.65

Mechanical Properties

UTS (MPa) YS (MPa) El% CVN Impact (J) (-30℃) Condition
>550 >460 19 100 PWHT: 690℃ for 1hr

Welding Currents (AC (70 OCV)/DCEP)

2.5 x 350 mm 3.15 x 450 mm 4.0 x 450 mm 5.0 x 450 mm
60-100 90-120 140-180 180-240

Product Specifications

Current Type AC (70 OCV)/DCEP
Welding Positions
Position
Position
Position
Position
Packaging
  • Standard carton packing of 20 kg box containing 4 cartons of 5 kg each.
Conditions (Pre-Drying)
  • 250-300°C for minimum 1 hr.