Innershield Family

Diameters / Packaging

Diameters
25 LB SPOOL
0.068 IN ED036677
0.072 IN ED036678

Innershield® NR®-232-H

Flux-cored self-shielded (FCAW-S) Wire

AWS: E71T-8-H8, E71T8-A2-CS3-H8

Innershield® NR®-232-H from Lincoln Electric is designed for high deposition, out-of-position welding for structural fabrication in seismic zones.

DETAILS

Designed for high deposition, out-of-position welding for structural fabrication in seismic zones. Recommended for single or multiple pass welding of 4.8 mm (3/16 in) and heavier carbon steel.

Features

  • High deposition rates for out-of-position welding
  • Penetrating arc
  • Fast freezing, easy to remove slag system

Typical Applications

  • Structural fabrication, including those subject to seismic requirements
  • General plate fabrication
  • Hull plate and stiffener welding on ships and barges
  • Machinery parts, tanks, hoppers, racks and scaffolding

Welding Positions

  • All

Shielding Gas

  • N/A

Special Features

Service Information

You May Also Need

BEFORE USE, READ AND UNDERSTAND THE SAFETY DATA SHEET (SDS) FOR THIS PRODUCT AND SPECIFIC INFORMATION PRINTED ON THE PRODUCT CONTAINER. SDS Search page

See test result disclaimer

CONFORMANCE

CONFORMANCES SPECIFICATION CLASSIFICATION
AWS AWS A5.20 E71T-8-H8
AWS AWS A5.36 E71T8-A2-CS3-H8
CWB CSA W48 E491T8-A3-CS3-H8 (E491T-8-H8)

MECHANICAL PROPERTIES

Classification Polarity Yield Strength @ 0.2% Offset
MPa (ksi)
Tensile Strength
MPa (ksi)
Elongation
%
Charpy V-Notch
J (ft-lbs) @ -30°C (-20°F)
E71T-8-H8 Requirement DC- 400 (58) min. 480-660 (70-95) 22 min. 27 (20) min.
E71T8-A2-CS3-H8 Requirement DC- 400 (58) min. 480-660 (70-95) 22 min. 27 (20) min.
Typical Result, As-welded DC- 430 (63) 550-590 (80-85) 28 58-89 (43-65)

DEPOSIT COMPOSITION

Classification Polarity %Al %B %C %Mn %P %S %Si Diffusible Hydrogen
mL/100g Weld Metal
E71T-8-H8 Requirement DC- 0.30 max. 1.75 max. 0.03 max. 0.03 max. 0.60 max. 8.0 max.
E71T8-A2-CS3-H8 Requirement DC- 0.30 max. 1.75 max. 0.030 max. 0.030 max. 0.60 max. 8 max.
Typical Result DC- 0.4-0.7 0.0013 0.14-0.17 0.58-0.74 0.012 0.003 0.27-0.40 4.8-6.7

TYPICAL OPERATING PROCEDURES

Diameter Polarity CTWD
mm (in.)
Wire Feed Speed
m/min (in/min)
Voltage
volts
Approx. Current
amps
Melt-off Rate
kg/hr (lb/hr)
Deposition Rate
kg/hr (lb/hr)
Efficiency
%
0.068 in (1.7 mm) DC- 19-32 (3/4-1 1/4) 2.8 (110) 18-19 195 2.3 (5.0) 1.8 (3.9) 78
0.068 in (1.7 mm) DC- 19-32 (3/4-1 1/4) 3.3 (130) 19-21 225 2.8 (6.2) 2.0 (4.6) 74
0.068 in (1.7 mm) DC- 19-32 (3/4-1 1/4) 3.8 (150) 19-21 250 3.2 (7.1) 2.4 (5.3) 75
0.068 in (1.7 mm) DC- 19-32 (3/4-1 1/4) 4.3 (170) 20-22 270 3.5 (7.8) 2.8 (6.1) 78
0.068 in (1.7 mm) DC- 19-32 (3/4-1 1/4) 5.0 (195) 23-24 300 4.3 (9.4) 3.2 (7.0) 74
0.068 in (1.7 mm) DC- 19-32 (3/4-1 1/4) 6.4 (250) 23-24 350 5.4 (11.8) 4.0 (9.0) 76
0.068 in (1.7 mm) DC- 19-32 (3/4-1 1/4) 7.4 (320) 25-27 400 6.9 (15.2) 5.2 (11.4) 75
0.072 in (1.8 mm) DC- 19-32 (3/4-1 1/4) 2.0 (80) 16-18 130 1.8 (4.0) 1.5 (3.3) 83
0.072 in (1.8 mm) DC- 19-32 (3/4-1 1/4) 3.5 (140) 18-21 225 3.1 (6.8) 2.5 (5.5) 81
0.072 in (1.8 mm) DC- 19-32 (3/4-1 1/4) 3.9 (155) 19-22 240 3.3 (7.2) 2.7 (6.0) 83
0.072 in (1.8 mm) DC- 19-32 (3/4-1 1/4) 4.3 (170) 20-23 255 3.6 (8.0) 2.9 (6.5) 81
0.072 in (1.8 mm) DC- 19-32 (3/4-1 1/4) 6.4 (250) 22-24 315 5.3 (11.7) 4.3 (9.6) 82
0.072 in (1.8 mm) DC- 19-32 (3/4-1 1/4) 7.4 (290) 23-25 350 6.2 (13.6) 5.0 (11.0) 81