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COATED ELECTRODES

Guide to AWS A5.5-1996 Covered electrode for manual metal-arc welding

Designates welding position, coating type and current type.

E 80

18

C1

Designated min. tensile strength in ksi.

(1 ksi = 1000 psi ~ 6.9 MPa).

AWS classification

Tensile strength min./MPa

Yield strength min./MPa

E 70 xx-x E 80 xx-x E 80 xx-C3 E 90 xx-x E 90 xx-M E 100 xx-x E 100 xx-M E 110 xx-x E 110 xx-M E 120 xx-x E 120 xx-M E 120 xx-M1

480 550 550 620 620 690 690 760 760 830 830 830

390 460 470–550 530 540–620 600 610–690 670 680–760 740 745–830 745–830

Suffix –A1 –B1 –B2 –B2L* –B3 –B3L* –B4L* –B5 –C1 –C1L* –C2 –C2L* –C3 –NM –D1 –D2 –D3 –G/–M/–W * C max. 0.05%.

Alloying system

Nominal values Wt%

C/Mo ~0.1/0.5 Cr/Mo ~0.5/0.5 Cr/Mo ~1.3/0.5 Cr/Mo ~1.3/0.5 Cr/Mo ~2.3/1.0 Cr/Mo ~2.3/1.0 Cr/Mo ~2.0/0.5 Cr/Mo/V ~0.5/1.0/0.05 Ni ~2.5 Ni ~2.5 Ni ~3.5 Ni ~3.5 Ni/Cr/Mo/V ~1.0/0.1/0.3/0.05 Ni/Mo ~1.0/0.5 Mn/Mo ~1.5/0.3 Mn/Mo ~1.8/0.3 Mn/Mo ~1.5/0.5 All other alloy steel electrodes

AWS Welding

Type of coating

Classification Position

AC DC

E xx 10 E xx 11 E xx 12 E xx 13 E xx 15 E xx 16 E xx 18 E xx 20 E xx 27

– x x x – x x x x

1 1 1 1 1 1 1 2 2

Cellulosic Cellulosic Rutile Rutile Basic Basic Basic, iron powder Acid Acid, high recovery

Type of current

+ pol + pol – pol +/– pol + pol + pol + pol c) +/– pol c) +/– pol

Designated chemical composition of weld metal.

Code

Welding position

1

2

All positions except vertical-down Flat and H-V fillets

3.01

Impact energy

AWS classification

min. J

°C

E 8018-NM E 8016-C3 E 8018-C3 E 8016-D3 E 8018-D3 E 9015-D1 E 9018-D1 E 10015-D2 E 10016-D2 E 10018-D2 E 9018-M E 10018-M E 11018-M E 12018-M E 12018-M1 E 7018-W E 8018-W E 8016-C1 E 8018-C1 E 7015-C1L E 7016-C1L E 7018-C1L E 8016-C2 E 8018-C2 E 7015-C2L E 7016-C2L E 7018-C2L All other

27 27 27 27 27 27 27 27 27 27 27 27 27 27 68 27 27 27 27 27 27 27 27 27 27 27 27 Not required

–40 –40 –40 –51 –51 –51 –51 –51 –51 –51 –51 –51 –51 –51 –18 –18 –18 –59 –59 –73 –73 –73 –73 –73 –101 –101 –101

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