B56 VAC
Universal basic electrode
Description & applications
Low hydrogen electrode with a vacuum packing and it can be used without baking. Universal basic coated electrode (115% recovery) for welding highly stressed connections with high security. Good low temperature properties down to - 50°C.
Resistant to cold cracks. Slag easy to remove. For frames, cases, supports, ship building, pressure vessels.
Construction steels for general use:
NF A 35-501 : A33.A34-2.E24-2, 3. E28-2, 3. E30-2, 3. A50-2. A60-2,3. E36-2,3,4
DIN 17100 : St33-1.St37-2, 3.St44-2, 3. St50-2. St60-2. St70-2
ASTM : A283grB, C, D. A570gr30,33,40, 50. A709gr50
Tube steels:
DIN 17172, 17175, 1629 : StE210-7, 240-7, 290-7, 320-7. St35. St35-4,8. St45. St45-4, 8. St52. St52-4. St55-4
API SPEC 5L : X42, X46, X52, X60
Ship steels: Quality A, B, C and D
Steels for Boiler and Pressure Vessels:
NF A 36-205 : A37CP, AP. A42CP, AP..A48CP, AP. A52CP*, AP
DIN 17155 : HI, HII, HIII, 17Mn 4, 19Mn6
ASTM : A414grC, D, E, F. A442gr55, 60. A514grC, D, E, F. A515gr55, 60, 65, 70. A285grC. A516gr55 à 70
High strength steels:
NF A 36-203 : E275D. E335D. E390D. A430D. E445D, 420T
NF A 36-204 : E420T. E460T
NF a 36-207 : A510 AP. E530 AP*. E550AP
DIN 17 102 : StE255, 315,355
Heat resisting steels: Wst255 tot 355
Cold tough steels: TstE 255 tot 355
Classification
| NFA 81-309 | AWS A 5.1 | BS 639 | EN ISO 2560-A | DIN 8529 |
|---|---|---|---|---|
| E 515/5 B 120 26 BH | E 7018-1-H4 | E 5155 B 120 26 (H) | E 42 6 B 42 H5 | E SY 42 76 Mn B |
Typical weld metal composition (%)
| C | Mn | Si | S | P |
|---|---|---|---|---|
| <0.1 | 1.2 | 0.5 | <0.025 | <0.025 |
All weld metal mechanical properties
| Rm (MPa) | Rp0.2 (MPa) | A5 (%) | Av - ISO - V |
|---|---|---|---|
| 510-610 | >420 | >22 | +20°C>120; -20°C > 70; - 50°C > 40 |
Packaging data
| Dimension | 2.5x350 | 3.2x350 | 4.0x450 | 5.0x450 |
|---|---|---|---|---|
| Electr. / packet | 223 | 139 | 88 | 57 |
| Electr. / carton | 892 | 556 | 352 | 228 |
| Kg 1000 electr. | - | - | - | - |
| Packets / carton | 4 | 4 | 4 | 4 |
| Kg / packet | 5 | 5 | 6 | 6 |
| Kg / carton | 20 | 20 | 24 | 24 |
Amperes
| A | 65-100 | 95-140 | 95-140 | 135-180 |
|---|
Welding Instructions
Redrying: 2h at 300°C, if necessary. Interpass temperature: <250°C.
= + ~ 70V
