DETAILS
Features
- AC polarity welding
- Capable of cold re-strikes
- Low open circuit voltage operation
Typical Applications
- Tack and skip welds
- General fabrication
- Thin section
Welding Positions
- All except vertical down
Disclaimers
Service Information
BEFORE USE, READ AND UNDERSTAND THE SAFETY DATA SHEET (SDS) FOR THIS PRODUCT AND SPECIFIC INFORMATION PRINTED ON THE PRODUCT CONTAINER. SDS Search page
See test result disclaimer
CONFORMANCE
| CONFORMANCES | SPECIFICATION | CLASSIFICATION |
|---|---|---|
| AWS | AWS A5.1 | E7018, E7018-H8 |
| CWB | CSA W48 | E4918-H8 |
MECHANICAL PROPERTIES
| Classification |
Yield Strength @ 0.2% Offset
MPa (ksi) |
Tensile Strength
MPa (ksi) |
Elongation
% |
Charpy V-Notch
J (ft-lbs) @ -30°C (-20°F) |
Hardness Rockwell B |
|---|---|---|---|---|---|
| E7018-H8 Requirement | 400 (58) min. | 480 (70) min. | 22 min. | 27 (20) min. | |
| Typical Result, As-welded | 460-580 (66-84) | 550-660 (79-95) | 22-34 | 27-136 (20-100) | 85-95 |
DEPOSIT COMPOSITION
| Classification | %C | %Cr | %Mn | %Mo | %Ni | %P | %S | %Si | %V | %Mn+Ni+Cr+Mo+V |
Diffusible Hydrogen
mL/100g Weld Metal |
1800F H2O - As received |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| E7018-H8 Requirement | 0.15 max. | 0.20 max. | 1.60 max. | 0.30 max. | 0.30 max. | 0.035 max. | 0.035 max. | 0.75 max. | 0.08 max. | 1.75 max. | 8 max. | 0.6 max. |
| Typical Result | 0.04-0.08 | 0.02-0.04 | 0.93-1.59 | 0.02 max. | 0.01-0.03 | 0.011-0.019 | 0.005-0.016 | 0.28-0.46 | 0.02-0.03 | 1.00-1.67 | 3-7 | 0.2 max. |
TYPICAL OPERATING PROCEDURES
| Diameter | Polarity⁽¹⁾ |
Current
Amps |
|---|---|---|
| 3/32 in (2.4 mm) | AC | 75-120 |
| 3/32 in (2.4 mm) | DC+ | 70-115 |
| 1/8 in (3.2 mm) | AC | 105-150 |
| 1/8 in (3.2 mm) | DC+ | 100-140 |
| 5/32 in (4.0 mm) | AC | 130-200 |
| 5/32 in (4.0 mm) | DC+ | 120-185 |
NOTES
| Note |
|---|
| ⁽¹⁾ Preferred polarity is listed first. |