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Excalibur 7018-A1 MR

Diameters / Packaging

Diameters
 (3) 8 lb Easy Open Can
 (3) 10 lb Easy Open Can
1/8 x 14 in (3.2 x 350 mm) ED033838
3/32 x 14 in (2.4 x 350 mm) ED033940
5/32 x 14 in (4.0 x 350 mm) ED033839

Excalibur® 7018 MR® N Stick (SMAW) Electrode

Stick (SMAW) | ED033940

CLASSIFICATIONS:
E7018 H4R

Mild Steel, Low Hydrogen • AWS E7018 H4R

Diameter

Select Diameter

  • 1/8 x 14 in (3.2 x 350 mm)
  • 3/32 x 14 in (2.4 x 350 mm)
  • 5/32 x 14 in (4.0 x 350 mm)

Package

Select Package

  • (3) 8 lb Easy Open Can

DETAILS

Mild steel low hydrogen stick electrode designed for stress relief. “N” Designator - design modified to meet properties after 48 hours stress relief

Features

  • Q2 Lot® - Certificate showing actual deposit composition and actual mechanical properties available online
  • Impact toughness tested to -46°C (-50°F)
  • Capable of exceeding AWS minimum requirement of 480 MPa (70 ksi) tensile and 400 MPa (58 ksi) yield strength after 48 hours of stress relieving at 590-620°C (1100-1150°F)
  • Prior to using this material for ASME Boiler and Pressure Vessel Code Section III applications, please contact the Lincoln Electric Specials Department to receive a Certified Material Test Report (CMTR) which meets all requirements of NCA-3860

Service Information

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 A5.1 E7018-1 H4R
CWB AWS A5.1M E4918-H4R

MECHANICAL PROPERTIES

Classification Yield Strength @ 0.2% Offset
MPa (ksi) 		Tensile Strength
MPa (ksi) 		Elongation
% 		Charpy V-Notch
J (ft-lbs) @ -30°C (-20°F) 		Charpy V-Notch
J (ft-lbs) @ -45°C (-50°F) 		Hardness Rockwell B
E7018-1 H4R Requirement 400 (58) min. 480 (70) min. 22 min. 27 (20) min.
Typical Result, As-welded 440-540 (64-78) 550-630 (79-91) 25-30 134-216 (99-159) 42-178 (31-131) 85-92

DEPOSIT COMPOSITION

Classification %C %Cr %Mn %Mo %Ni %P %S %Si %V %Mn+Ni+Cr+Mo+V Diffusible Hydrogen
mL/100g Weld Metal 		1800F H2O - As received 1800F H2O - After 9 hrs at 80F/80%RH
E7018-1 H4R Requirement 0.15 max. 0.20 max. 1.60 max. 0.30 max. 0.30 max. 0.035 max. 0.035 max. 0.75 max. 0.08 max. 1.75 max. 4 max. 0.3 max. 0.4 max.
Typical Result 0.06-0.09 0.02-0.04 0.96-1.19 0.20-0.26 0.02-0.04 0.008-0.011 0.004-0.008 0.20-0.43 0.01 max. 1.27-1.48 1-2 0.1 0.1-0.3

TYPICAL OPERATING PROCEDURES

Diameter Polarity⁽¹⁾ Current
Amps
3/32 in (2.4 mm) DC+ 70-110
3/32 in (2.4 mm) AC 80-120
1/8 in (3.2 mm) DC+ 90-160
1/8 in (3.2 mm) AC 100-160
5/32 in (4.0 mm) DC+ 130-210
5/32 in (4.0 mm) AC 140-210

NOTES

Note
⁽¹⁾ Preferred polarity is listed first.