Gas Assisted FCAW Wire - TECHNICAL DATA SHEET
SmoothCor™ 81 Ni1 H4
Description
SmoothCor 81 Ni1 H4 is a rutile type flux cored wire
designed for the welding of carbon and low alloy steels
which require moderate tensile strength and good
impact toughness at subzero temperatures. It is
suitable for use with both Ar/CO2 or CO2 shielding
gases and can be used in all positions, including downhand, vertical-up and overhead.
Designed for single and multi pass welding, SmoothCor
81 Ni1 H4 deposits a weld metal containing approximately 1% Ni. The nickel content of the weld metal
ensures good impact toughness properties at subzero
temperatures and the weld metal is consistently free of
inclusions and porosity for X-ray soundness. The very
low H4 hydrogen class ensures superior crack
resistance.
A rutile based wire, SmoothCor 81 Ni1 H4 welds with a
very smooth-running, low spatter arc and a fine spray
type transfer to give excellent weld pool control. Bead
profile is smooth with minimum convexity.
Application
SmoothCor 81 Ni1 H4 is recommended for welding finegrained, low alloy steels intended for service at low
temperatures and for matching strength on 490MPa
yield strength steels. It is also suitable for welding
fine-grained and quench and tempered steels where
undermatching strength weld metal is desirable.
Welding Positions
Specifications
Flux Type
Rutile
Classification:
AWS/ASME-SFA A5.29 E81T1-Ni1 H4
E81T1-1Ni1M H4
AS/NZS ISO 17632
B-T 55 4 T1-1 M A-N2 U H5
B-T 55 4 T1-1 C A-N2 U H5
Welding Current DC+
Recommended Shielding Gases:
•
Argoshield 52 or Ar+20-25% CO2 or equiv.
•
Welding Grade CO2
•
Flow rate 15-20 litres/min.
Issue 1: Sept 2011
Chemical Composition, wt% - All-Weld Metal
Typical
C
Si
Mn
Ni
Argoshield 52 0.03 0.50 1.29 0.90
0.03 0.41 1.15 0.91
CO2
Mechanical Properties – All-Weld Metal
Typical (as welded):
Using Argoshield 52 Using CO2
Yield strength
490 MPa min.
490 MPa min
Tensile strength
560-640 MPa
560-640 MPa
Elongation
20% min
20% min
Impact energy, CVN 55J min av at –40oC 55J min av @ –40oC
Packaging Data
Diameter (mm)
Part No.
Type
Weight (kg)
* Vacuum packed
1.2
1081Ni112
*Spool
15
1.6
1081Ni116
*Spool
15
Welding Parameters
Welding Position - Flat, horizontal
Operating Range
Diameter (mm)
1.2
Current Range (amps)
130-300
Voltage Range (volts)
21-32
Electrode Stick-out (mm) 12-25
1.6
150-400
22-34
12-25
Welding Position - Vertical Up
Operating Range
Diameter (mm)
1.2
Current Range (amps)
130-260
Voltage Range (volts)
21-29
Electrode Stick-out (mm) 12-25
1.6
150-280
22-27
12-25
Welding Position - Overhead
Operating Range
Diameter (mm)
1.2
Current Range (amps)
150-280
Voltage Range (volts)
21-30
Electrode Stick-out (mm) 12-25
1.6
150-310
22-28
12-25
Optimum
Welding Position - Flat, Horizontal
Diameter (mm)
1.2
Wire Feed Speed (m/min) 11.4
Current (amps)
250
Voltage (volts)
28
Electrode Stick-out (mm)
20
1.6
8.4
330
29
20
Welding Position - Vertical Up, Overhead
Diameter (mm)
1.2
1.6
Wire Feed Speed (m/min) 7.7
4.6
Current (amps)
190
225
Voltage (volts)
26
25
Electrode Stick-out (mm)
20
20
Gas Assisted FCAW Wire - TECHNICAL DATA SHEET
Issue 1: Sept 2011
SmoothCor 81 Ni1 H4 cont ...
Deposition Data
Diameter (mm)
Current (amps)
Voltage (volts)
1.2
180
210
250
300
320
200
300
360
410
25
27
28
33
33
25
28
29
33
1.6
Approx. Wire
Feed Speed
(m/min)
6.6
8.1
10.7
14.5
16.3
3.8
7.4
9.9
12.2
Distributed by
BOC Limited
Australia:
ACN 95 000 029 729
10 Julius Ave, North Ryde NSW 2113
Phone 131 262, Fax 132 427, www.boc.com
New Zealand:
WN007748
970-988 Great South Rd, Penrose, Auckland
Phone: 0800 111 333, Fax 0800 229 823, www.boc.co.nz
Deposition Rate % Efficiency
(kg/hr)
2.27
2.72
3.63
4.99
5.81
2.27
4.08
5.90
7.71
86
86
87
87
87
87
87
86
88