Cromaflux 300B
Flux for submerged arc welding
Classification
EN ISO 14174-A S A FB 2 DC H5
Description:
Cromaflux 300B is a high basicity, non-alloying agglomerated flux for submerged arc welding of austenitic, duplex and super-duplex stainless steels. Slag detachability is excellent, even in narrow joints
and with stabilised deposits, leaving a smooth, bright bead surface finish. Cromaflux 300B is designed for both butt and fillet welding and can be used on DC with up to 900A on a single wire. The high
basicity level of Cromaflux 300B gives minimal Cr burn-out losses and also produces a low content of
microslag inclusions, ensuring very good low temperature fracture toughness properties.
Flux type: Fluoride-basic
Basicity index: 2.3
Flux density: 1.0kg/dm3
Welding current: DC
Redrying temperature: 300-350°C, 2h
Grain size: EN 760 2-16
Approvals:
Cromasaw 308L, 316L;
Cromasaw 318, 347;
Cromasaw Duplex;
TÜV CL
TÜV
LR TÜV DNV CL
Product data:
Product code
9800-0001
Packaging
25kg plastic-lined paper bag
Typical all-weld metal chemical composition, wt.%:
Wire
C
Si
Mn
Cr
Ni
Mo
Others
FN *
Cromasaw 308L
0.02
0.6
1.4
19.5 10.0
7
Cromasaw 308H
0.05
0.6
1.4
19.5 10.0
4
Cromasaw 347
0.04
0.6
1.0
19.1 9.3
0.5 Nb
8
Cromasaw 316L
0.02
0.6
1.4
18.3 11.3
2.8
8
Cromasaw 317L
0.02
0.6
1.4
19.5 14.3
3.5
6
Cromasaw 318
0.05
0.6
1.4
18.6 12.3
2.5
0.5Nb
4
Cromasaw 309L
0.02
0.6
1.4
23.0 13.3
10
Cromasaw 309MoL 0.02
0.6
1.4
21.5 14.2
2.8
12
Cromasaw 310
0.10
0.4
1.4
25.3 21.0
0
Cromasaw 312
0.10
0.7
1.4
29
9
60
Cromasaw Duplex
0.02
0.7
1.2
22.5 9.0
3.2
0,13N
48
Cromasaw 2507
0.02
0.5
0.5
24.6 9
3.9
0.24N
49
* FN WRC-92
Typical all-weld metal mechanical properties:
Wire: Cromasaw
308L 308H 347 316L 317L 318
309L 309MoL 310 312 Duplex
2507
Yield strength, Re, MPa
390
390
440 400
420
430
420
470
400 650 620
650
Tensile strength, Rm, MPa
550
550
620 580
590
600
580
660
600 800 780
840
Elongation A5, %
36
36
36
35
34
38
30
38
26
Impact energy CV,J:
308L 308H 347 316L 317L 318
36
24
26
309L 309MoL 310 312 Duplex
2507
100
110
95
-20°C
100
85
-40°C
95
75
75
60
+20°C 120
120
100 100
130
-60°C
-196°C 50
130
60
150 40
110
40
50
50
236
40
50