SJF-602Ni
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E91T1-K2C
For low alloy low temperature high strength steel : SJF-602Ni
Specification：AWS A5.20 E91T1-K2C
GB/T17493 E621T1-K2C
Introduction：
SJF-602Ni is a CO₂ gas-shielded flux-cored welding wire for 620Mpa grade low-alloy low temperature steel.
It contains about 1.5% Ni and maintain good impact value at low temperature;
Excellent all-position welding performance, low fume generation, a soft and stable arc, easy slag removal, and superior X-ray inspection quality.
Application：
Ship building
Bridge
Offshore engineering
Storage tank
Pressure vessel
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Chemical Composition of Wire %：
| C | Mn | Si | P | S | Ni | Cr | Mo | V | |
| AWS | ≤0.15 | 0.50-1.75 | ≤0.80 | ≤0.030 | ≤0.030 | 1.0-2.0 | ≤0.15 | ≤0.35 | ≤0.05 |
| TR(HC) | 0.04 | 1.30 | 0.41 | 0.013 | 0.004 | 1.38 | 0.024 | 0.10 | 0.013 |
Mechanical Properties of Deposited Metal：
| Tensile Strength | Yield Strength | Elongation | Impact Value | |||||
| Mpa | Mpa | % | -20℃ J | |||||
| TR(HC) | 665 | 595 | 23 | 100 | ||||
Packing and Recommended Parameters: (Polarity:DC+)
| Diameter | Spool | Drum | ||||
| mm/in | Current range(A) | 0.9kg(2 lbs) | 5kg (11 lbs) | 15kg(33 lbs) | 250kg(551 lbs) | 350kg(771lbs) |
| 0.8(0.030) | 80-220 | √ | √ | √ | √ | |
| 0.9(0.035) | 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 | √ | √ | √ | ||
| 2.0(5/64) | 200-500 | √ | √ | |||
Welding position：
Shielding Gas：
CO₂
Points for Attention：
1. Preheat and interpass temperature: 135~165°C.
2. Shielding gas flow rate 15-25 L/min.
3. Remove the oil, dust and rust from the welding parts.
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