C-Mn STEEL (Low Hydrogen)

NEXA 7018-1 H4R

For Heavy Welding with Low Hydrogen Content

AWS A/SFA 5.1 E7018-1 H4R IS 814: EB5629H3JX
NEXA 7018-1 H4R

Applications

  • Storage tanks, pipes, boilers
  • Bridges & heavy structures subject to dynamic loading
  • 414/414M Gr.C/D,SA 516/516M Gr.55/60/65/70, IS 2002, IS 2062 steelsJoining ASTM SA

Characteristics

  • Basic coated iron powder type
  • Excellent toughness down to -60℃
  • Radiographic weld deposit
  • Suitable for pipe welding in 5G and 6G positions

Chemical Composition

C Mn Si
0.1 1.3 0.5

Mechanical Properties

UTS (MPa) YS (MPa) EL% CVN Impact (J) (-46℃) Diffusible H2
>490 >400 >22% 80 J <5 ml/100 gm

Welding Currents (AC (70 OCV)/ DCEP)

2.5 x 350 mm 3.15 x 350 mm 3.15 x 450 mm 4.0 x 450 mm 5.0 x 450 mm
60-100 90-120 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.