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Specifications

AWS  E7018-A1  Heat-resistant steel electrode
1.Excellent mechanical properties
2.welding general low-alloy steel.
4.Good slag detachability
5.Direct factory agent
6.All-position welding
Heat-resistant Steel Electrode  AWS  E7018-A1  GB E5018-A1
 

Introduction: AWS  E7018-A1 is a kind of Mo0.5% pearlitic heat-resistant steel electrode with iron powder low-hydrogen type coating. AC/DC. All-position welding. The weldments should be given preheating and postweld heat treatment according to their structural features.

Uses: Used for welding boiler pipes below 510°C (such as 15Mo). Also used for welding general low-alloy steel.

Chemical Composition of Deposited Metal (%)
Chemical Composition
C
Mn
Si
S
P
Mo
Guarantee Value
0.05-0.12
≤0.90
≤0.5
≤0.035
≤0.035
0.40~0.65
 

Mechanical Properties of Deposited Metal
Test Item
Rm(MPa)
ReL/Rp0.2(Mpa)
A(%)
KV2(J)
Guarantee Value
≥490
≥390
≥22
≥47(normal temperature)
General Result
510~570
400~450
22~28
110~160(normal temperature)
 

Diffusible Hydrogen Content in Deposited Metal: ≤6.0ml/100g(Glycerine Hydrogen Test)

X-ray Radiographic Inspection: Degree 1

Reference Current (AC, DC+)
Electrode Diameter(mm)
φ3.2
φ4.0
φ5.0
Welding Current (A)
90~140
140~180
170~220
 

Instructions:
1.The electrodes must be baked under about 350°C 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.

Welding Positions:
H OH HF F VU