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S-777MXT

FIller Metal Breakdown

S-777MXT

Especially insensitive to oil, rust, scale, and dirt on the surface to be welded. Slag detachability in narrow groove and resistance to porosity are excellent. Suitable for welding of thin and medium plate in high speed welding. As the consumption of flux is low, it is very economical. Applicable to horizontal and flat fillet welding.
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MSDS
Data Sheet
  • Welding Positions

Classification

  • JIS Z 3352 SA AR1
  • EN ISO 14174-S A AR 1

Approvals

Wire AWS EN ISO 14174 / 14171
H-14 A5.17 F7A0- EH14 S A AR 1 / S4
M-12K A5.17 F7A(P)Z-EM12K S A AR 1 / S2Si
A-2 A5.23 F8PZ-EA2- A2 S A AR 1 / S2Mo
B-2 A5.23 F9AZ(F8PZ)-EB2-B2 S A AR 1
B-3 A5.23 F8PZ-EB3-B3 S A AR 1

Features

  • Outstanding weldability, Good slag removal.
  • High speed welding

Application Areas

    Base Materials to be welded

    Butt and flat welding of thin and medium thickness plates, High travel speed welding for miniature LPG tanks and thin walled tube & pipe. B-2 (B-3, H-14) is Single-layer welding of 1.25%Cr-0.5% (2.25%Cr-1.0%, Carbon steel) high temperature heat resistant steels used for boilers

    Diameter / Packaging

    Packaging
    Tin Can 20kg (44lbs)
    PE Bag 20kg (44lbs)

    Typical Chemical Composition of the Wire (wt%)

    Wire C Si Mn P S Cr Mo
    H-14 0.06 0.60 1.15 0.028 0.015 – –
    M-12K 0.06 0.50 0.70 0.025 0.015 – –
    A-2 0.05 0.65 0.75 0.020 0.010 – 0.45
    B-2 0.06 0.60 0.55 0.022 0.015 1.25 0.40
    B-3 0.07 0.55 0.50 0.018 0.010 2.05 0.95

    Typical Mechanical Properties of All-Weld Meta

    Wire Condition YS MPa(ksi) TS MPa(ksi) EL (%) Temp °C (°F) Impact ISO-V J (ft·lbs)
    H-14 AC, As-welded 530(76) 570(82) 32 -20(0) 40(30)
    M-12K AC, As-welded 510(74) 560(81) 28 0(32) 30(24)
    M-12K AC, 620°C×1hr 460(66) 540(78) 32 0(32) 60(44)
    A-2 AC, 620°C×1hr 580(84) 640(92) 28 0(32) 45(33)
    B-2 AC, As-welded 635(92) 722(104) 23 – –
    B-2 AC, 690°C×1hr 560(81) 640(92) 25 0(32) 45(33)
    B-3 AC, 690°C×1hr 570(82) 660(95) 20 0(32) 30(24)

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