Innershield Family

Innershield® NR®-311

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

AWS: E70T-7, E70T7-AZ-CS3

Innershield® NR®-311 from Lincoln Electric is designed for high deposition rates and fast travel speeds.

DETAILS

Designed for high deposition rates and fast travel speeds. Recommended for fillet, lap and butt welds on 3.2 mm (1/8 in) and thicker steel, including some low alloy steels in applications without impact strength requirements.

Features

  • High deposition rates and fast travel speeds
  • Easy slag removal
  • Optimal toe wash-in
  • Deep penetration
  • High resistance to cracking

Typical Applications

  • Recommended for fillet, lap and butt welds on 3.2 mm (1/8 in) and thicker steel, including some low alloy steels
  • Horizontal butt welds, such as column-to-column structural connections
  • General fabrication
  • Assembly welding

Welding Positions

  • Flat/Horizontal

Shielding Gas

  • N/A

Special Features

Service Information

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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 E70T-7
AWS AWS A5.36 E70T7-AZ-CS3
ABS AWS A5.20 E70T-7
CWB CSA W48 E490T7-AZ-CS3 (E492T-7)

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

MECHANICAL PROPERTIES

Classification Polarity Yield Strength @ 0.2% Offset
MPa (ksi)
Tensile Strength
MPa (ksi)
Elongation
%
E70T7-AZ-CS3 Requirement DC- 400 (58) min. 480-660 (70-95) 22 min.
Typical Result, As-welded DC- 410 (59) 570-650 (83-94) 23

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

DEPOSIT COMPOSITION

Classification Polarity %Al %C %Mn %P %S %Si
E70T7-AZ-CS3 Requirement DC- 0.30 max. 1.75 max. 0.030 max. 0.030 max. 0.60 max.
Typical Result DC- 1.2-1.6 0.21-0.30 0.42-0.49 0.014 0.005 0.08-0.13

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

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
%
5/64 in (2.0 mm) DC- 38 (1 1/2) 2.5 (100) 20-23 190 2.9 (6.4) 2.3 (5.0) 78
5/64 in (2.0 mm) DC- 38 (1 1/2) 4.1 (160) 24-28 275 4.7 (10.3) 3.6 (8.0) 78
5/64 in (2.0 mm) DC- 38 (1 1/2) 6.1 (240) 25-29 355 7.0 (15.4) 5.6 (12.4) 80
5/64 in (2.0 mm) DC- 38 (1 1/2) 7.6 (300) 27-31 410 8.8 (19.3) 7.2 (15.8) 82
3/32 in (2.4 mm) DC- 45 (1 3/4) 1.9 (75) 20-23 200 3.2 (7.0) 2.5 (5.4) 77
3/32 in (2.4 mm) DC- 45 (1 3/4) 3.4 (135) 23-26 300 5.9 (13.1) 4.6 (10.2) 78
3/32 in (2.4 mm) DC- 45 (1 3/4) 3.8 (150) 24-27 325 6.6 (14.6) 5.2 (11.4) 78
3/32 in (2.4 mm) DC- 45 (1 3/4) 5.3 (210) 26-28 400 9.3 (20.4) 7.5 (16.5) 81
3/32 in (2.4 mm) DC- 45 (1 3/4) 6.9 (270) 28-30 450 11.9 (26.2) 10.0 (22.0) 84
7/64 in (2.8 mm) DC- 45 (1 3/4) 2.5 (100) 23-26 325 5.4 (12.0) 4.5 (10.0) 83
7/64 in (2.8 mm) DC- 45 (1 3/4) 3.7 (145) 25-27 400 8.1 (17.8) 6.6 (14.5) 82
7/64 in (2.8 mm) DC- 45 (1 3/4) 4.4 (175) 26-28 450 9.8 (21.5) 8.2 (18.0) 83
7/64 in (2.8 mm) DC- 45 (1 3/4) 6.1 (240) 30-32 550 13.4 (29.5) 11.6 (25.5) 86
7/64 in (2.8 mm) DC- 45 (1 3/4) 7.6 (300) 32-34 625 16.7 (36.9) 15.0 (33.0) 89