Description
BRAND :ULTIMATE-18 NC
(For Sour Service Application)
SFA 5.1 AWS E7018 H4
Hydrogen controlled, basic coated iron powder-type electrode of outstanding quality, suitable for sour service.
APPLICATIONS:ULTIMATE-18 NC is an outstanding electrode designed for several stringent applications, demanding the best in terms of total weld quality. This unique electrode is capable of yielding welds which are of radiographic quality, combined with exceptionally high impact strength and crack resistance. Thus it is suitable for a very wide range of grain-refined steels having tensile strength in the range of 500 to 600 N/mm2), as well as difficult steels containing higher carbon or higher levels of sulphur and other impurities.
In addition, weld metal is suitable for sour service
CHEMICAL ANALYSIS OF ALL WELD DEPOSIT (%)
| C | Mn | Si | S | P |
| 0.08 max . | 0.90-1.40 | 0.50 max . | 0.008 max . | 0.015 max . |
No addition of any alloying elements - Ni, Cr, Mo, V, Cu. ALLWELD MECHANICAL PROPERTIES (As Welded).
| Ultimate Tensile Strength Mpa | Yield Strength Mpa | Elongation ( L = 4d ) % | CVN Impact Values ( Joules ) at minus 30 ° C |
| 510-610 | 400-500 | 26-32 | 80-120 |
Hardness (HV) 200 max Hydrogen in Weld metal: 4ml/100 g. max (Mercury Method) WELDING CURRENT RANGES & PACKING DATA FOR SIZES MANUFACTURED:
| Dia ( mm ) | 2.5 | 3.15 | 4 | 5 |
| Length ( mm ) | 350 | 450 | 450 | 450 |
| Current Range ( Amp ) DC + or AC 90V | 80-100 | 110-135 | 150-190 | 200-270 |
| Pieces per Carton | 125 | 90 | 60 | 40 |
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