Rev.
06
Supercored 71
FLUX CORED ARC WELDING CONSUMABLE
FOR WELDING OF MILD & 490MPa CLASS
HIGH TENSILE STEEL
2022.02
HYUNDAI WELDING CO., LTD.
Supercored 71
v Specification AWS A5.20 E71T-1C
(AWS A5.20M E491T-1C)
EN ISO 17632-A T42 2 P C1 1
JIS Z3313 T49 2 T1-1 C A
AWS D1.8
Wire Dia. mm(in)
1.2(0.045) 1.4(0.052) 1.6(1/16)
* AWS D1.8 is available upon request
v Applications All position welding of machinery, shipbuilding, bridges. Impact
values of weld metal are good.
v Characteristics Supercored 71 is a flux cored wire which has been designed to get
on Usage a good usability in all position for wide range of welding currents.
With its quiet and smooth arc, its slag detachability is very good.
v Note on Usage 1. For preheating guidelines, please refer to your local standards and
codes relative to your best practices
2. One-side welding defects such as hot cracking may occur with
wrong welding parameter such as high welding speed.
3. Use 100% CO₂gas.
Supercored 71
Mechanical Properties
& Chemical Composition of All Weld Metal
v Welding Conditions Method by AWS Spec.
Welding Position : 1G(PA)
Diameter : 1.2mm (0.045in)
Shielding Gas : 100%CO₂
Flow Rate : 20 ℓ /min
Amp./ Volt. : 280A / 32V
Stick-Out : 20~25mm (0.79~0.98in)
Pre-Heat : R.T .
Interpass Temp. : 150±15℃ (302±59℉)
[ Joint Preparation & Layer Details ] Polarity : DC(+)
v Mechanical Properties of all weld metal
CVN Impact Test
Consumable Tensile Test
J(ft·lbs)
YS TS EL -1℃ -18℃
MPa (lbs/in2) MPa (lbs/in2) (%) (30℉) (0℉)
Supercored 71
545 (79,000) 572 (83,000) 28 110 (81) 70 (52)
490~670
AWS A5.20 ≥ 390 ≥27J at –18℃
(70,000~ ≥ 22
E71T-1C (56,000) (≥20ft·lbs at 0℉)
97,000)
v Chemical Analysis of all weld metal(wt%)
Consumable C Si Mn P S
Supercored 71 0.036 0.51 1.26 0.010 0.011
AWS A5.20
≤ 0.12 ≤ 0.9 ≤ 1.75 ≤ 0.03 ≤ 0.03
E71T-1C
This information is provided solely for the purpose of confirming product conformance with applicable standards. The serviceability of a product or
structure utilizing this type of information is and must be the sole responsibility of the builder/user. Many variables beyond the control of HYUNDAI
WELDING CO., LTD. affect the results obtained in applying this type of information. These variables include, but are not limited to, welding procedure,
shielding gas, plate chemistry and temperature, weldment design, fabrication methods and service requirements.
Supercored 71
Mechanical Properties
& Chemical Composition of All Weld Metal
v Welding Conditions Method by AWS Spec.
Welding Position : 1G(PA)
Diameter : 1.4mm (0.052in)
Shielding Gas : 100%CO₂
Flow Rate : 20 ℓ /min
Amp./ Volt. : 300A / 32V
Stick-Out : 20~25mm (0.79~0.98in)
Pre-Heat : R.T .
Interpass Temp. : 150±15℃ (302±59℉)
[ Joint Preparation & Layer Details ] Polarity : DC(+)
v Mechanical Properties of all weld metal
CVN Impact Test
Consumable Tensile Test
J(ft·lbs)
YS TS EL -1℃ -18℃
MPa (lbs/in2) MPa (lbs/in2) (%) (30℉) (0℉)
Supercored 71
548 (79,000) 576 (84,000) 28 128 (94) 81 (60)
490~670
AWS A5.20 ≥ 390 ≥27J at –18℃
(70,000~ ≥ 22
E71T-1C (56,000) (≥20ft·lbs at 0℉)
97,000)
v Chemical Analysis of all weld metal(wt%)
Consumable C Si Mn P S
Supercored 71 0.038 0.50 1.28 0.010 0.011
AWS A5.20
≤ 0.12 ≤ 0.9 ≤ 1.75 ≤ 0.03 ≤ 0.03
E71T-1C
This information is provided solely for the purpose of confirming product conformance with applicable standards. The serviceability of a product or
structure utilizing this type of information is and must be the sole responsibility of the builder/user. Many variables beyond the control of HYUNDAI
WELDING CO., LTD. affect the results obtained in applying this type of information. These variables include, but are not limited to, welding procedure,
shielding gas, plate chemistry and temperature, weldment design, fabrication methods and service requirements.
Supercored 71
Mechanical Properties
& Chemical Composition of All Weld Metal
v Welding Conditions Method by AWS Spec.
Welding Position : 1G(PA)
Diameter : 1.6mm (1/16in)
Shielding Gas : 100%CO₂
Flow Rate : 20 ℓ /min
Amp./ Volt. : 320~330A / 29~30V
Stick-Out : 20~25mm (0.79~0.98in)
Pre-Heat : R.T .
Interpass Temp. : 150±15℃ (302±59℉)
[ Joint Preparation & Layer Details ] Polarity : DC(+)
v Mechanical Properties of all weld metal
CVN Impact Test
Consumable Tensile Test
J(ft·lbs)
YS TS EL -1℃ -18℃
MPa (lbs/in2) MPa (lbs/in2) (%) (30℉) (0℉)
Supercored 71
551 (80,000) 586 (85,000) 27.5 105 (77) 66 (49)
490~670
AWS A5.20 ≥ 390 ≥27J at –18℃
(70,000~ ≥ 22
E71T-1C (56,000) (≥20ft·lbs at 0℉)
97,000)
v Chemical Analysis of all weld metal(wt%)
Consumable C Si Mn P S
Supercored 71 0.033 0.49 1.30 0.011 0.010
AWS A5.20
≤ 0.12 ≤ 0.9 ≤ 1.75 ≤ 0.03 ≤ 0.03
E71T-1C
This information is provided solely for the purpose of confirming product conformance with applicable standards. The serviceability of a product or
structure utilizing this type of information is and must be the sole responsibility of the builder/user. Many variables beyond the control of HYUNDAI
WELDING CO., LTD. affect the results obtained in applying this type of information. These variables include, but are not limited to, welding procedure,
shielding gas, plate chemistry and temperature, weldment design, fabrication methods and service requirements.
Supercored 71
Welding Efficiency
v Deposition Rate & Efficiency
Welding
Wire Feed Deposition Deposition
Consumable Conditions
Speed Efficiency Rate
(size)
Amp.(A) Volt.(V) m/min (in/min) % kg/hr(lb/hr)
200 26 10.2 (400) 84~87 3.4 (7.5)
Supercored 71
250 28 11.5 (450) 85~88 4.5 (9.9)
1.2mm
(0.045in)
300 33 15.3 (600) 86~88 5.2 (11.4)
250 28 7.6 (300) 85~87 3.9 (8.6)
Supercored 71
300 32 10.2 (400) 85~88 4.8 (10.6)
1.4mm
(0.052in)
330 36 12.8 (500) 86~89 5.8 (12.8)
280 31 6.4 (250) 85~88 4.2 (9.2)
Supercored 71
330 33 7.6 (300) 86~88 4.8 (10.6)
1.6mm
350 34 8.1 (320) 87~89 5.3 (11.7)
(1/16in)
400 38 9.2 (360) 87~90 5.7 (12.5)
Deposition
Deposition rate
efficiency
=(Deposited metal
=(Deposited metal
Remark weight/
weight/
Welding
Wire weight
time,min.)×60
used)×100
* Shielding Gas : 100%CO₂
This information is provided solely for the purpose of confirming product conformance with applicable standards. The serviceability of a product or
structure utilizing this type of information is and must be the sole responsibility of the builder/user. Many variables beyond the control of HYUNDAI
WELDING CO., LTD. affect the results obtained in applying this type of information. These variables include, but are not limited to, welding procedure,
shielding gas, plate chemistry and temperature, weldment design, fabrication methods and service requirements.
Supercored 71
Diffusible Hydrogen Content
v Welding Conditions
Diameter : 1.2mm (0.045in) Amps(A) / Volts(V) : 230A / 26V
Shielding Gas : 100%CO₂ 20~25mm
Stick-Out :
(0.79~0.98in)
Flow Rate : 20 ℓ /min
30 cm/min
Welding Position : 1G (PA) Welding Speed :
(12 in/min)
Current Type & Polarity : DC(+)
v Hydrogen Analysis Using Gas Chromatography Method
Hydrogen Evolution Time : 72 hrs
Evolution Temp. : 45 ℃ (113℉)
Barometric Pressure : 780 mm-Hg
v Result(㎖/100g Weld Metal)
X1 X2 X3 X4
5.3 5.4 5.4 5.4
Average Hydrogen Content 5.4 ㎖ / 100g Weld Metal
This information is provided solely for the purpose of confirming product conformance with applicable standards. The serviceability of a product or
structure utilizing this type of information is and must be the sole responsibility of the builder/user. Many variables beyond the control of HYUNDAI
WELDING CO., LTD. affect the results obtained in applying this type of information. These variables include, but are not limited to, welding procedure,
shielding gas, plate chemistry and temperature, weldment design, fabrication methods and service requirements.
Supercored 71
Proper Welding Condition
v Proper Current Range
Wire Dia,
Shielding Welding
Consumable
Gas Position
1.2mm 1.4mm 1.6mm
(0.045in) (0.052in) (1/16in)
F & HF 120~300Amp 150~350Amp 150~360Amp
Supercored V-Up & OH
100%CO₂ 120~260Amp 140~270Amp 160~280mp
71
V-Down 200~300Amp 220~320Amp 250~300Amp
This information is provided solely for the purpose of confirming product conformance with applicable standards. The serviceability of a product or
structure utilizing this type of information is and must be the sole responsibility of the builder/user. Many variables beyond the control of HYUNDAI
WELDING CO., LTD. affect the results obtained in applying this type of information. These variables include, but are not limited to, welding procedure,
shielding gas, plate chemistry and temperature, weldment design, fabrication methods and service requirements.
Supercored 71
Approvals
v Shipping Approvals
Register of shipping & Size
Welding
Position
KR ABS LR BV DNV NK
KSW53G©H10
3SMG, 3SAH10, 3S, 3YSH10 SA3M,3YMHH IIIYMSH10
KAW53MG©H10
3YSMG 3YSA A3M,3YMHH
All ©H10
V-Down
0.9~1.6mm
0.9~1.6mm 0.9~1.6mm 0.9~1.6mm 0.9~1.6mm 0.9~1.6mm
(0.035~1/16in)
(0.035~1/16in) (0.035~1/16in) (0.035~1/16in) (0.035~1/16in) (0.035~1/16in)
v F No & A No
F No A No
6 1
This information is provided solely for the purpose of confirming product conformance with applicable standards. The serviceability of a product or
structure utilizing this type of information is and must be the sole responsibility of the builder/user. Many variables beyond the control of HYUNDAI
WELDING CO., LTD. affect the results obtained in applying this type of information. These variables include, but are not limited to, welding procedure,
shielding gas, plate chemistry and temperature, weldment design, fabrication methods and service requirements.
