Product Categories
CO2 welding wire
Field of Apply
NB-70S is one of the most popular solid wires for CO2 or mixture CO2 + Ar gas shielded arc welding and hads a good weldablity,stable arc,less spatter,excellent bead apparance and can used for all opsitions.
For welding of mild and 500MPa class steel in automobiles vehicles,ships,bridges,engineering constructions and containers etc. It also can be used for thin plates, pipeline with high speed.
Technical
1. Classification:
AWS A5.18: ER 70S-6; JIS Z 3312: YGW12; DIN 8559: SG2.
Approved by Vietnam Register: TCVN 6259: 2003 /SW53.
2. Size, recommended currents and gas flow:
|
Dia (mm) |
0.8 |
0.9 |
1.0 |
1.2 |
1.6 |
|
Current (A) |
80 ÷120 |
90÷130 |
100 ÷140 |
110 ÷200 |
180 ÷320 |
|
Voltage (V) |
20 ÷ 21 |
20 ÷22 |
22 ÷ 24 |
23 ÷25 |
25 ÷28 |
|
Gas flow(l/min) |
8 ÷ 9 |
9 ÷ 10 |
10 ÷ 11 |
12 ÷ 13 |
16 ÷ 18 |
3. Mechanical properties:
|
Yield point N/mm2 |
Tensile strength N/mm2 |
Elongation (%) |
Impact Strength(J/0oC) |
Shielded Gas |
|
≥ 420 |
≥ 510 |
≥ 22 |
≥ 50 |
CO2 |
|
≥ 430 |
≥ 520 |
≥ 24 |
≥ 60 |
80%Ar+ 18%CO2 |
4.Chemical compositions:
|
Composition |
%C |
%Mn |
%Si |
%S |
%P |
|
Standard |
0.05 ÷ 0.12 |
1.0 ÷ 1.85 |
0.40 ÷ 1.15 |
≤ 0.030 |
≤ 0.030 |
|
Checking sample |
0.07 |
1.45 |
0.85 |
0.015 |
0.017 |
5. Applications:
NB-70S is suitable for welding structure of the carbon and low-alloy steel and steel structure with strength more than 500 N/mm2 such as pressure tanks, automobiles vehicles, ships, bridges,engineering constructions and containers etc. It also can be used for thin plates, pipeline with high speed.
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