En 760

Guide to EN 760 – 1996

Classification of agglomerated welding fluxes Symbol

Flux type

Symbol

Flux type according to composition

Metalurgical behaviour

F

fused

MS

Manganese – Silicate

Burn - out

A

agglomerated

CS

M

mixed

S

A

Symbo l 1

Contribution from flux on all-weld metal (%) over 0.7%

Calcium - Silicate

2

0.5 - 0.7%

ZS

Zirconium – Silicate

3

0.3 - 0.5%

RS

Rutile – Silicate

4

0.1 - 0.3%

AR

Aluminate – Rutile

5

0 – 0.1%

Burn-out/Pickup Pick-up

AB

Aluminate – Basic

6

0.1 - 0.3%

AS

Aluminate – Silicate

7

0.3 - 0.5%

AF

Aluminate-Fluoride-Basic

8

0.5 - 0.7%

FB

Fluoride – Basic

9

over 0.7%

Z

Any other composition

CS

1

67

AC

H10

Symbol for the flux used in submerged arc welding process

Properties of welding fluxes

Type of current

Symbol 1

Symbol AC

Metalurgical behaviour -for welding and surfacing of unalloyed and lowalloyed steels (general structural, high tensile, some heat-resistant steels); there aren’t any alloying elements added, except Si and Mn (burnout or pick-up according to table)

2

- for welding and surfacing of Cr- in Cr-Ni stainless steel, heat-resistant steels and Ni and Ni-alloy

3

- mainly for surfacing, (burn-out and pick-up of added elements according to table)

DC

Current Alternating Direct

Hydrogen content (ISO3690) Symbol ml/ 100 g H5 5 H10

10

H 15

15