Detalles
- Mild steel low hydrogen electrode meets Chemical Composition recommendations of API 751. - Q2 Lot® - Lot Controlled Chemistry and Mechanical Properties.
Características
- Exceeds AWS toughness requirements at -50°F
- Extreme bend ability
- Moisture pick-up resistant
- Clear puddle and a smooth arc
- Meets Chemical Composition Recommendations of API 751
Servicio de información
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CONFORMANCE
| CONFORMANCES | SPECIFICATION | CLASSIFICATION |
|---|---|---|
| AWS | AWS A5.1 | E7018-1 H4R |
| ISO | ISO 2560-A | E 42 4 Z B 3 2 H5 |
| ISO | ISO 2560-B | E4918-1 A U H5 |
| ABS | ABS - Part 2 | 3YH5 |
| BV | BV - Chapter 5 | 3YHHH |
| CWB | CSA W48 | E4918-1-H4R |
| DNV-GL | DNV - 2.9 | 3YH5 |
| LR | LR - Chapter 11 | 3YM H5 |
MECHANICAL PROPERTIES
| Classification |
Yield Strength @ 0.2% Offset
MPa (ksi) |
Tensile Strength
MPa (ksi) |
Elongation
% |
Charpy V-Notch
J (ft-lbs) @ -40°C (-40°F) |
Charpy V-Notch
J (ft-lbs) @ -45°C (-50°F) |
Hardness Rockwell B |
|---|---|---|---|---|---|---|
| E7018-1 H4R Requirement | 400 (58) min. | 480 (70) min. | 22 min. | 27 (20) min. | ||
| As-welded Typical Result | 460-540 (66-78) | 550-630 (80-91) | 22-31 | 141-161 (104-119) | 27-181 (20-134) | 82-93 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| E7018-1 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 | 0.04-0.07 | 0.02-0.04 | 1.20-1.42 | 0.15-0.28 | 0.06 max. | 0.009-0.016 | 0.003-0.011 | 0.32-0.54 | 0.01 max. | 1.51-1.75 | 1-4 | 0.1 max. | 0.4 max. |
TYPICAL OPERATING PROCEDURES
| Classification | Polarity⁽¹⁾ |
Current
Amps |
|---|---|---|
| 3/32 in (2.4 mm) | DC+ | 70-110 |
| 3/32 in (2.4 mm) | AC | 80-120 |
| 1/8 in (3.2 mm) | DC+ | 90-160 |
| 1/8 in (3.2 mm) | AC | 100-160 |
| 5/32 in (4.0 mm) | DC+ | 130-210 |
| 5/32 in (4.0 mm) | AC | 140-210 |
| 3/16 in (4.8 mm) | DC+ | 180-300 |
| 3/16 in (4.8 mm) | AC | 200-300 |
| 7/32 in (5.6 mm) | DC+ | 250-330 |
| 7/32 in (5.6 mm) | AC | 270-370 |
| 1/4 in (6.4 mm) | DC+ | 300-400 |
| 1/4 in (6.4 mm) | AC | 325-420 |
NOTES
| Note |
|---|
| ⁽¹⁾ Preferred polarity is listed first. |