EN ISO 2560-B

Guide to  EN ISO 2560 – B

EXAMPLE:

 

ISO 2560 – B – E 55 18-N2 A U H5

 

 

ISO 2560-B:

the number of this International Standard, classification by tensile strength and 27 J impact energy

E:

covered electrode/manual metal arc welding

55:

tensile strength (see Table 1B)

18:

basic iron powder coating suitable for a.c. and d.c. (+), in all positions except vertical down (see Table 4B)

-N2:

1% Ni as the principal alloying element (see Table 3B)

A:

as welded

U:

supplemental impact requirement of 47 J at the basic 27 J impact test temperature

H5:

hydrogen content (see table 7)

 

 

Table 1B

 

Symbol

Minimum tensile strength

N/mm2

43

430

49

490

55

550

57

570

 

Table 7

Symbol

Hydrogen content

max.

 ml/100g of deposited weld metal

H5

5

H10

10

H15

15

 

Alloy symbol

Chemical composition

  Principal alloy             Nominal

     element(s)                  level

                                      mas. %

 

Symbol

Type of covering

Welding positionsa

Type of current

No symbol, -1 ali –P1

Mn

1

 

03

rutile basic

allb

AC in DC(±)

-1M3

Mo

0,5

 

10

cellulosic

all

DC(+)

-3M2

Mn

Mo

1,5

0,4

 

11

cellulosic

all

AC in DC(+)

-3M3

Mn

Mo

1,5

0,5

 

12

rutile

allb

AC in DC(-)

-N1

Ni

0,5

 

13

rutile

allb

AC in DC(±)

-N2

Ni

1

 

14

rutile + iron powder

allb

AC in DC(±)

-N3

Ni

1,5

 

15

basic

allb

DC (+)

-3N3

Mn

Ni

1,5

1,5

 

16

basic

allb

AC in DC(+)

-N5

Ni

2,5

 

18

basic + iron powder

allb

AC in DC(+)

-N7

Ni

3,5

 

19

Ilmenit

allb

AC in DC(±)

-N13

Ni

6,5

 

20

iron oxide

PA, PB

AC in DC(-)

-N2M3

Ni

Mo

1

0,5

 

24

rutile + iron powder

PA, PB

AC in DC(±)

-NC

Ni

Cu

0,5

0,4

 

27

iron oxide + iron powder

PA, PB

AC in DC(-)

-CC

Cr

Cu

0,5

0,4

 

28

basic + iron powder

PA,PB,PC

AC in DC(+)

-NCC

Ni

Cr

Cu

0,2

0,6

0,5

 

40

not specified

Manufacturer’s recommendations

-NCC1

Ni

Cr

Cu

0,6

0,6

0,5

 

48

basic

all

AC in DC(+)

-NCC2

Ni

Cr

Cu

0,3

0,2

0,5

 

NOTE   A description of the characteristic of each of the types of covering is given in annex C

-G

Any other agreed composition

 

a    Positions are defined in ISO 6947. PA = flat, PB =horizontal vertical fillet, PC = horizontal, PG = vertical down

b     All positions may or may not include vertical down welding.

This shall be specified in the manufacturer’s trade literature.