SJ-60II
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TH600-NQ-II
Weathering Resistant Steel SJ-60II
Specification：TB/T2374-2008 TH600-NQ-II
Introduction：
Suitable for 660MPa grade atmospheric corrosion-resistant steel.
Appropriate adding of alloying elements Cu, P, Ni, Cr, Cu to the welding wire forms a dense and stable oxide protective film on the surface.
With good crack resistance, plasticity, and toughness，excellent weldability，easy slag removal and beautiful weld bead appearance.
Application：
Bridges
Construction machinery
Container
Railway vehicles
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Chemical Composition of Wire %
| C | Mn | Si | P | S | Cu | Ni | Cr | |
| AWS | ≤0.10 | 1.0-2.0 | ≤0.60 | ≤0.025 | ≤0.020 | ≤0.50 | 0.20-0.60 | 0.30-1.0 |
| TR(HC) | 0.06 | 1.6 | 0.30 | 0.010 | 0.008 | 0.30 | 0.30 | 0.50 |
Mechanical Properties of Deposited Metal
| Tensile Strength | Yield Strength | Elongation | Impact Value | |||||
| Mpa | Mpa | % | -40℃ J | |||||
| TR(HC) | 650 | 550 | 26 | 98 | ||||
Packing and Recommended Parameters:(DC+)
| Diameter | Spool | Drum | ||||||
| mm/in | Current range(A) | 0.9kg(2 lbs) | 5kg (11 lbs) | 15kg(33 lbs) | 20kg(44 lbs) | 250kg(551 lbs) | 350kg(771lbs) | 400kg(881 lbs) |
| 0.8(0.030) | 80-220 | √ | √ | √ | √ | |||
| 1.0(0.040) | 100-250 | √ | √ | √ | √ | √ | ||
| 1.2(0.045) | 140-350 | √ | √ | √ | √ | √ | ||
| 1.4(0.052) | 180-370 | √ | √ | √ | √ | √ | √ | |
| 1.6(1/16) | 200-400 | √ | √ | √ | √ | √ | ||
Welding position：
Shielding Gas：
80% Ar+CO₂
Points for Attention：
1. Gas Flow Rate: 20~25 L/min.
2. Contact Tip-to-Work Distance (CTWD): 15~25 mm.
3. Remove the rust, moisture, oil, dust, and others from the welding area.
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