Detalles
Mild Steel, Low Hydrogen • AWS A5.1 E7018-1 H4R Also meets AWS 5.1 E7018 H4R
Características
- Soft arc for ease of puddle manipulation
- Smooth arc transfer
- Excellent wetting in the toes allowing for less hold times
- Flat bead profile ideal for cap passes on pipe, groove welds, and pipe repair
- No intentional addition of zinc for moisture resistance
- Q2 Lot®- Certificate showing actual deposit chemistry and mechanical properties available online
Aplicaciones Típicas
- Pipeline, pipe repair, and integrity work
- Boiler, pressure vessel fabrication and repair
- Pipefitting
- Structural fabrication
- General fabrication
Posiciones de soldadura
- All, except vertical down
Servicio de información
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CONFORMANCE
| CONFORMANCES | SPECIFICATION | CLASSIFICATION |
|---|---|---|
| AWS | AWS A5.1 | E7018-1 H4R |
| CWB | CSA W48 | E4918-1-H4R |
MECHANICAL PROPERTIES
| Classification |
Yield Strength @ 0.2% Offset
MPa (ksi) |
Tensile Strength
MPa (ksi) |
Elongation
% |
Charpy V-Notch
J (ft-lbs) @ -46°C (-50°F) |
Hardness Rockwell B |
|---|---|---|---|---|---|
| E7018-1 H4R Requirement | 400 (58) min. | 480 (70) min. | 22 min. | 27 (20) min. | Info. Only |
| Typical Result, As-welded | 440-480 (64-69) | 540-580 (79-84) | 29-32 | 84-141 (62-104) | 86-88 |
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 | 0.05-0.07 | 0.02-0.05 | 1.25-1.37 | 0.00-0.08 | 0.00-0.03 | 0.010-0.013 | 0.011-0.017 | 0.41-0.62 | 0.01 | 1.30-1.50 | 1-4 | 0.1 | 0.1-0.3 |
TYPICAL OPERATING PROCEDURES
| Diameter | Polarity⁽¹⁾ |
Current
Amps |
|---|---|---|
| 3/32" (2.4 mm) | DC+ | 70-110 |
| 3/32" (2.4 mm) | AC | 80-120 |
| 1/8" (3.2 mm) | DC+ | 90-160 |
| 1/8" (3.2 mm) | AC | 100-160 |
| 5/32" (4.0 mm) | DC+ | 120-220 |
| 5/32" (4.0 mm) | AC | 130-220 |
NOTES
| Note |
|---|
| (1) Preferred polarity is listed first. |