Guide to EN ISO 14174: Fluxes for submerged arc welding

Application flux class

Hydrogen content, all-weld metal

Symbol

1

2

3

Symbol ml/100g deposited metal

For non alloy and low alloy steels

For stainless and Ni-base alloys

For surfacing , with alloy transfer

from flux

H4

H5

H10

max. 4

max. 5

max. 10

Method of manufacture

Symbol

F

A

M

Type of current

Fused

Agglomerated

Mixed

Symbol

DC

AC

DC only

AC or DC

Flux for

SAW

SA

AB

1

67

Characteristic chemical constituents

Symbol

MS

CS

ZS

RS

AR

AB

AS

AF

FB

Z

AC

Metallurgical behaviour

Symbol

Behaviour

Contribution from

flux

1

2

3

4

5

6

7

8

9

Burn out

Burn out

Burn out

Burn out

Neutral

Pick-up

Pick-up

Pick-up

Pick-up

0.70.5-0.7

0.3-0.5

0.1-0.3

0-0.1

0.1-0.3

0.3-0.5

0.5-0.7

0.7-

Type of flux

Manganese-silicate

Calcium-silicate

Zirconium-sili cate

Rutile-silicate

Aluminate-rutile

Aluminate-basic

Aluminate-silicate

Aluminate-fluoride-basic

Fluoride-basic

Any other composition

H5

Flux class

1

2

3

Elements

Si and Mn

Chemical symbols, pick-up

Chemical symbols, pick-up

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