Rev. 00 SC-71MSR FLUX CORED ARC WELDING CONSUMABLE FOR WELDING OF LOW-TEMPERATURE SERVICE STEEL HYUNDAI WELDING CO., LTD.

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1 Rev. 00 FLUX CORED ARC WELDING CONSUMABLE FOR WELDING OF LOW-TEMPERATURE SERVICE STEEL HYUNDAI WELDING CO., LTD.

2 Specification E71T- 12M- J EN ISO17632-A T 46 4 P M 1 H5 Applications Oil and gas construction, pipe, and offshore stations Characteristics on Usage is a titania-type flux cored wire to be used with Ar+CO 2 gas mixture shielding. It provide excellent notch toughness at low temperature, not only as-welded but also stress relieved state Note on Usage 1. Proper preheating(50~ 150 ) and interpass temperature must be used in order to release hydrogen which may cause cracking in weld metal when electrodes are used for medium and heavy plates 2. Use Ar+20~ 25% CO 2

3 Mechanical Properties & Chemical Composition of All Weld Metal Welding Conditions Method by AWS Spec. Diameter(mm) : mm Shielding Gas : Ar+20% CO 2 Welding Position : 1G Amp./ Volt. : 270~ 280 / 29~ 30 Stick-Out(mm) : 20~ 25 Pre-Heat( ) : R.T. Interpass Temp.( ) : 150±15 [ Joint Preparation & Layer Details ] Mechanical Properties of all weld metal Tensile Test CVN Impact Test (Joule) YS TS EL (%) x1 x2 x3 Avg. X1 x2 X3 Avg. Remark As welded PWHT (620 2hr) ~ J at 40 - Chemical Analysis of all weld metal(wt%) C Si Mn P S Ni

4 Mechanical Properties & Chemical Composition of All Weld Metal Welding Conditions Method by AWS Spec. Diameter(mm) : 1.4mm Shielding Gas : Ar+20% CO 2 Welding Position : 1G Amp./ Volt. : / 30~ 31 Stick-Out(mm) : 20~ 25 Pre-Heat( ) : R.T. Interpass Temp.( ) : 150±15 [ Joint Preparation & Layer Details ] Mechanical Properties of all weld metal Tensile Test CVN Impact Test (Joule) YS TS EL (%) x1 x2 x3 Avg. X1 x2 X3 Avg. Remark As welded PWHT (620 2hr) ~ J at 40 - Chemical Analysis of all weld metal(wt%) C Si Mn P S Ni

5 Welding Efficiency Deposition Rate & Efficiency (size) Welding Conditions Amp.(A) Volt.(V) Deposition Efficiency(%) Deposition Rate(kg/hr) mm ~ ~ ~ Remark Deposition efficiency =(Deposited metal weight/ Wire weight used) 100 Deposition rate =(Deposited metal weight/ Welding time,min.) 60 * Shielding Gas :Ar+20%CO 2

6 Diffusible Hydrogen Content Welding Conditions Diameter(mm) : /1.4 Shielding Gas : Ar+20%CO 2 Flow Rate(l/min.) : 20 Welding Position : 1G Amps(A) / Volts(V) : 270~ 300 / 29~ 30 Stick-Out(mm) : 20 Welding Speed : 30 cpm Current Type & Polarity : DC(+) Hydrogen Analysis Using Gas Chromatography Method Hydrogen Evolution Time : 72 hrs Evolution Temp. : 25 Barometric Pressure : 780 mm- Hg Analysis Temp. : 25 Exposure Condition : 80%RH- 25 Result( ml /100g Weld Metal) 구분 X1 X2 X3 X4 Avg. mm mm

7 Proper Current Range Shielding Gas Welding Position Wire Dia. (mm) mm Flat 200~290 Amp Ar+ 20%CO 2 v-up Over head 180~250 Amp V-down 210~280 Amp AUTHORIZED APPROVAL DETAILS Welding position Register of shipping & Size(mm) ABS LR BV DNV All V-down 4Y400SA H5 4Y40S H5 SA4Y40M HHH IVY40MS H5