A002LT
Description:
A002LT is a titanium calcium-based ultra-low carbon stainless steel electrode, the weld metal has good mechanical properties and resistance to intergranular corrosion, especially at -196 ℃ with good impact toughness, AC and DC, electrode resistance Red, soft arc, beautiful appearance, good slag removal, spatter, all-position welding performance, good operability.
use:
For ultra-low carbon 00Cr19Ni10 or 06Cr18Ni11Ti stainless steel welding, at -196 ℃ with good toughness, suitable for LNG storage tanks and pipe welding.
Deposited metal chemical composition (%)
Pilot projects | C | S | Mn | Si | P | Cr | Ni | Mo | Cu |
standard value | ≤0.040 | ≤0.030 | 0.50- 2.50 | ≤1.00 | ≤0.040 | 18.0- 21.0 | 9.0- 12.0 | ≤0.75 | ≤0.75 |
Example value | 0.030 | 0.003 | 1.00 | 0.68 | 0.013 | 18.40 | 10.65 | 0.025 | 0.020 |
Deposited metal mechanical properties
Pilot projects | tensile strength Rm (MPa) | Elongation A (%) | Impact absorption KV2 (J) -196 ° C |
standard value | ≥510 | ≥30 | ≥29 |
Example value | 560 | 46 | 40 |
Welding test piece size
Specification (mm) | Specimen size (mm) | Angle (o) | Clearance (mm) | Welding current (A) | Welding voltage (V) |
1.6 | 300 × 100 × 20 | 22.5 | 5 | 360 | 36 |
Reference current (DC + )
Electrode diameter (mm) | Ф2.0 | Ф2.5 | Ф3.2 | Ф4.0 | Ф5.0 |
Welding current (A) | 40 ~ 80 | 50 ~ 100 | 70 ~ 130 | 100 ~ 160 | 140 ~ 200 |
Precautions:
1. The electrode must be baked at 300-350 ℃ for 1 hour before welding, with baking.
2. When welding using small current and short arc welding.
3. Must be welded before welding to remove rust, oil, water and other impurities.
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