THT50-6 (ER70S-6)
THT50-6 (ER70S-6)
AWS A5.18 ER70S-6
ISO 636-B-W49A3W6
GB/T 39280W49A3U6
Applications:
It is suitable for the welding of carbon steel and low alloy steel, such as Gr.50, and so on. Can be for pipeline’s backing weld.
Characteristics:
This GTAW wire is for Rm 500MPa level carbon steel. The welding performance is excellent. All positions is suitable.
Attention:
1. The rust, oil, water and other impurities of the weld area must be removed before welding.
2. The mechanical properties of all weld metal be decided by heat input, normally the small heat input will better than larger one.
Chemical Composition of Wire: (Wt. %)
|
Items |
C |
Mn |
Si |
S |
P |
Ni |
Cr |
Mo |
V |
Cu |
|
Requirements |
0.06 -0.15 |
1.40 -1.85 |
0.80 -1.15 |
≤ 0.025 |
≤ 0.025 |
≤ 0.15 |
≤ 0.15 |
≤ 0.15 |
≤ 0.03 |
≤ 0.50 |
Mechanical Properties of All Weld Metal: (Ar)
|
Items |
Rm/MPa |
Rel/Rp0.2 /MPa |
A/% |
KV2 (-30℃) /J |
|
Requirements |
≥500 |
≥420 |
≥22 |
≥27 |
X-ray Radiographic Inspection:
Level Ⅱ
Classification of Society Certification:
|
Ship Inspection Agency |
CCS |
|
Level Of Recognition |
3Y |
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