SJ-18
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YGW18
Low Alloy High Strength Steel SJ-18
Specification：JIS Z3312 YGW18
Introduction：
Used in high-strength steel structure welding, use a wide range of current with stable arc characteristics.
At the highest limit of the Japanese standard JASS 6 (40KJ/ cm.350°C), good metal strength and toughness can be maintained.
Application：
Bridges
High-rise buildings
Pass the certification：
JIS
Chemical Composition of Wire %
| C | Mn | Si | P | S | Cu | Ti+Zr | Mo | |
| AWS | ≤0.15 | 1.40-2.60 | 0.55-1.10 | ≤0.030 | ≤0.50 | ≤0.50 | ≤0.30 | ≤0.40 |
| TR(HC) | 0.07 | 1.80 | 0.76 | 0.011 | 0.13 | 0.13 | 0.16 | 0.22 |
Mechanical Properties of Deposited Metal
| Tensile Strength | Yield Strength | Elongation | Impact Value | |||||
| Mpa | Mpa | % | 0℃ J | |||||
| TR(HC) | 640 | 490 | 26 | 117 | ||||
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) | 50-100 | √ | √ | √ | √ | |||
| 0.9(0.035) | 50-200 | √ | √ | √ | √ | |||
| 1.0(0.040) | 80-250 | √ | √ | √ | √ | √ | ||
| 1.2(0.045) | 100-350 | √ | √ | √ | √ | √ | ||
| 1.4(0.052) | 200-400 | √ | √ | √ | √ | √ | √ | |
| 1.6(1/16) | 250-500 | √ | √ | √ | √ | √ | ||
| 2.0(5/64) | 270-500 | √ | √ | √ | √ | |||
Welding position：
Shielding Gas：
75% ~80%Ar+CO₂
OR：
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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