Name: TH550-NQ-Ⅱ Weathering steel wire
SKU: 0

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TH550-NQ-Ⅱ Weathering steel wire

TH550-NQ-Ⅱ welding wire is 550MPa grade low alloy weathering steel welding wire, the welding wire contains an appropriate amount of Cr, Ni, Cu and other alloying elements, so that the weld has excellent atmospheric corrosion resistance.

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PRODUCT DESCRIPTION

Characteristics: TH550-NQ-Ⅱ welding wire is 550MPa grade low alloy weathering steel welding wire, the welding wire contains an appropriate amount of Cr, Ni, Cu and other alloying elements, so that the weld has excellent atmospheric corrosion resistance.

Usage

Used for welding of Q450NQR1 and 550MPa grade atmospheric corrosion resistant steel structure, which can be used in construction machinery, bridge, container, rolling stock manufacturing and other industries.
Welding wire chemical composition (mass fraction) : %

Radius

≤

0.10

1.20-

1.60

≤

0.60

≤0.020

≤0.025

0.20-0.60

0.20-0.50

0.30-0.90

Instantiate

0.07

1.42

0.47

0.011

0.013

0.40

0.31

0.67

X-ray inspection: Level II
Mechanical properties of deposited metal: (80%Ar+20%CO2)

	Tensile strength Rm/MPa	Yield strength Rel/ Rp0.2MPa	Elongation A(%)	Charpy V-notch impact absorption energy KV2 (J) -40℃
Guaranteed value	≥550	≥460	≥22	≥60
Instantiate	600	500	24	75

Welding reference current: (DC+)

Wire diameter (mm)	0.8	1.0	1.2	1.6
Welding Current (A)	50-180	70-230	80-350	120-500

Note

1. Rust, oil, moisture and other impurities must be removed from the welds before welding.

2. The size of the welding line energy will directly affect the mechanical properties of the weld. The size of the line energy depends on the importance of the structure. The more important the structure, the smaller the line energy should be used.

3. Welding parameters provided are for reference only. The user should develop welding specifications for appropriate production according to the specific situation.

CERTIFICATE