TIG SJ-55-Ni3
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ER80S-Ni3
Low Alloy low temperature Steel TIG SJ-55Ni3
Specification：AWS A5.28 ER80S-Ni3
ISO 636-A: W 46 7 Z2Ni3
GB/T 8110 ER55-Ni3
Introduction：
TIG for 550MPa grade steel, containing 3% Ni, suitable for low temperature environment.
Excellent welding performance with smooth feeding, stable arc, neat welds, low spatter.
Excellent low temperature toughness, high strength, good wear resistance at -70℃.
Application：
low temperture storage tank
low temperture pipeline
Pass the certification：
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Chemical Composition of Wire %
| C | Mn | Si | P | S | Cu | Cr | Ni | Mo | |
| AWS | ≤0.12 | ≤1.25 | 0.40-0.80 | ≤0.025 | ≤0.025 | ≤0.35 | ≤0.15 | 3.00-3.75 | ≤0.35 |
| TR(HC) | 0.039 | 0.89 | 0.44 | 0.008 | 0.006 | 0.03 | 0.14 | 3.65 | 0.01 |
Mechanical Properties of Deposited Metal
| Tensile Strength | Yield Strength | Elongation | Impact Value | PWHT | |||||
| Mpa | Mpa | % | -70℃ J | ℃xh | |||||
| TR(HC) | 600 | 550 | 28 | 140 | 620 x 1 | ||||
Diameter/Packing
| Diameter | Tube-1000mm |
| mm/in | 5kg (11 lbs) |
| 1.6(0.063) | √ |
| 2.0(0.079) | √ |
| 2.4(0.095) | √ |
| 3.2(0.126) | √ |
| 4.0(0.165) | √ |
Welding position：
Shielding Gas：
Ar
Polarity：
DC-
Points for Attention：
1. Pure Ar > 99.99%.
2. 50-200A, protective gas 5-15L/min,200-350A, protective gas 12-20L/min.
3. Preheating and interpass temperature: 135-165 ℃;
4. Remove the rust, moisture, oil, dust, and others from the welding area.
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