Guide to EN ISO 2560-A : MMA electrodes for non-alloyed and

fine grain steels

Symbol

35

38

42

46

50

Tensile Strength

MPa

Yield Strength

min. MPa

Elongation

min. %

440-570

470-600

500-640

530-680

560-720

355

380

420

460

500

22

20

20

20

18

Symbol

3

Welding position

1

2

3

4

5

All positions

All positions, except vertical down

Flat butt weld, flat fillet weld, horizontal-vertical fillet weld

Flat butt weld, flat fillet weld

Vertical down and positions according to symbol 3

Type of current

Metal recovery, %

1

2

3

4

5

6

7

8

E 46

Symbol

<105

<105

105 <125

105 <125

125 <160

125 <160

>160

>160

1Ni

Covered electrode

for manual metal arc

welding.

AC +DC

DC

AC +DC

DC

AC +DC

DC

AC +DC

DC

B

5

Symbol

A

B

C

R

RR

RC

RA

RB

Symbol

Coating type

Acid

Basic

Cellulosic

Rutile

Rutile (thick coated)

Rutile-Cellulosic

Rutile-Acid

Rutile-Basic

Impact Energy

Charpy-V

Temp °C for 47J min.

Z

A

0

2

3

4

5

6

No requirements

+20

0

–20

–30

–40

–50

–60

H5

Symbol

Hydrogen content,

ml/100 g deposited

weld metal, max.

H5

H10

H15

5

10

15

Chemical composition of all-weld metal , % *

Mn

Symbol

4

No symbol

Mo

MnMo

1Ni

2Ni

3Ni

Mn1Ni

1NiMo

Z

2.0

1.4

1.4 - 2.0

1.4

1.4

1.4

1.4 - 2.0

1.4

Mo

–

0.3 - 0.6

0.3 - 0.6

–

–

–

–

0.3 - 0.6

Any other agreed composition

Ni

–

–

–

0.6 - 1.2

1.8 - 2.6

2.6 - 3.8

0.6 - 1.2

0.6 - 1.2

* If not specified Mo <0.2, Ni <0.3, Cr <0.2, V <0.05, Nb <0.05, Cu <0.3

Single values shown in the table mean maximum values.

265