DETAILS
Features
- Smooth arc performance
- moisture resistance
- Meets AWS "R" requirements
Typical Applications
- Structural
- Chemical processing structures
- Ship building
- Pressure piping
- Mild steel
Welding Positions
- All except vertical down
Shielding Gas
- Not Applicable
Special Features
- Retail Small Packaging (RSP). All RSP products carry AWS compliance. Unlike the standard products, RSP products have no other agencies approvals.
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 H4R |
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) |
---|---|---|---|---|
E7018 H4R Requirement | 400 (58) min. | 480 (70) min. | 22 min. | 27 (20) min. |
Typical Result, As-welded | 430-470 (62-68) | 520-570 (75-83) | 27-30 | 130-313 (96-231) |
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 | 1800F H2O - After 9 hrs at 80F/80%RH |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
E7018 H4R 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. | 4 max. | 0.3 max. | 0.4 max. |
Typical Result | 0.05 | 0.03-0.06 | 0.89-1.19 | 0.01 | 0.02-0.04 | 0.011-0.013 | 0.007-0.011 | 0.20-0.30 | 0.01 | 0.96-1.31 | 2 | 0.1 | 0.2-0.3 |
TYPICAL OPERATING PROCEDURES
Diameter | Polarity⁽¹⁾ |
Current
Amps |
---|---|---|
3/32" (2.4 mm) | DC+ | 65-100 |
3/32" (2.4 mm) | AC | 70-105 |
1/8" (3.2 mm) | DC+ | 110-160 |
1/8" (3.2 mm) | AC | 120-170 |
5/32" (4.0 mm) | DC+ | 130-200 |
5/32" (4.0 mm) | AC | 140-230 |
NOTES
Note |
---|
⁽¹⁾ Preferred polarity is listed first. |