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Sandvik 10SW (Welding flux)

Datasheet updated 2014-03-25 10:18:13 (supersedes all previous editions)

Sandvik 10SW is a chromium-compensating agglomerated flux giving good slag removal and a fine bead appearance. It is suitable for welding with wire and strip electrodes of the chromium, chromium-nickel and chromium-nickel-molybdenum steel types either with or without niobium.

Sandvik 10SW is an allround flux which can be used for many applications varying from surfacing continuous caster rolls to large componens in chemical plants. Sandvik 10SW gives about 2% higher ferrite content than flux Sandvik 10S.

Standards

  • EN number S A CS 2 57 53 DC

Product standards

  • EN ISO 14174

Approvals

Contact us for latest information on approvals.

Chemical composition (nominal), %

SiO2 MgO Al2O3 CaF2 Cr
35 30 15 7 5

Flux data

Bulk weight 1.0 kg/l
Basicity (Boniszewski) 1.0
Current capacity
using 60 x 0.5 mm strip electrode
1200 A
Flux consumption 0.7 kg/kg strip electrode
0.7 kg/kg wire electrode at 30 V
1.0 kg/kg wire electrode at 35 V

Strip welding

Alloying vector

The alloying vector describes the difference in chemical composition between the filler metal and the undiluted all-weld metal due to the influence of the flux.

Element Sandvik strip electrode
19.9.LNb 24.13.LNb 24.13.L 19.12.3.L
C +0,007 +0,005 +0,002 +0,004
Si +0,4 +0,5 +0,5 +0,4
Mn -0,8 -0,7 -0,7 -0,8
Cr +0,4 +0,3 +0,3 +0,4
Ni -0,2 -0,2 -0,2 -0,2
Mo 0 0 0 0
Nb -0,2 -0,2 0 0
N +0,03 +0,03 +0,03 +0,03

Surfacing

The chemical compositions below are typical results after weld surfacing on 2¼Cr1Mo steel.

Alloy type ASTM 347 ASTM 347 ASTM 316L
Layer 1 Sandvik
24.13.LNb
Sandvik
24.13.L
Sandvik
24.13.L
Layer 2 Sandvik
19.9.LNb
Sandvik
19.9.LNb
Sandvik
19.12.3.L
C 0.02 0.02 0.02
Si 0.06 0.08 0.07
Mn 0.08 0.7 0.8
Cr 21.0 19.5 19.0
Ni 10.4 10.1 11.5
Mo 0 0.2 2.2
Nb 0.3 0.3 0
N 0.05 0.05 0.06

Intergranular corrosion

All three surfacings above have been IGC tested (ASTM A262, Pr.E, Strauss) after heat treatment at 690°C for 15 hours, and passed.

Bend testing

All three surfacings have passed side bend testing (ASME IX) after heat treatment at 690°C for 15 hours.

Welding parameters

Direct current, with electrode positive is normally used.

Strip dimensions, mm Current, A Voltage, V Travel speed, mm/mm
20 x 0.50 200-275 28-30 80-160
30 x 0.50 300-425 28-30 80-160
60 x 0.50 650-850 28-30 80-160
90 x 0.50 975-1275 28-30 80-160

Wire welding

Alloying vector

The alloying vector describes the difference in chemical composition between the filler metal and the undiluted all-weld metal due to the influence of the flux.

Element Sandvik wire electrode
19.9.L 19.9.Nb 19.12.3.L
C +0,002 0 +0.002
Si +0.6 +0.5 +0.5
Mn -0.8 -0.5 -0.6
Cr +0.4 +0.3 +0.3
Ni -0.2 -0.2 -0.2
Mo 0 0 0
Nb 0 -0.2 0
N +0.03 +0.03 +0.03

Surfacing

Dilution for SAW with wire electrodes is fairly high and special measure has to be taken to reduce dilution, like low speed, angeled welding torch, large overlap, etcetera. As Sandvik 10S gives low ferrite content Sandvik 10SW is more suitable for the first layer. The chemical compositions below are typical results after weld surfacing on 2¼Cr1Mo steel.

Alloy type ASTM 347 ASTM 316L
Layer 1 Sandvik
24.13.LHF
Sandvik
24.13.LHF
Layer 2 Sandvik
19.9.Nb
Sandvik
19.12.3.L
Layer 3 Sandvik
19.9.Nb
Sandvik
19.12.3.L
C 0.04 0.02
Si 1.0 1.0
Mn 0.6 0.8
Cr 19.0 18.5
Ni 9.2 11.4
Mo 0 2.1
Nb 0.3 0
N 0.06 0.06

Joining

Sandvik 10SW gives the following typical mechanical properties of all-weld metal for the wire electrodes below.

Sandvik Rp0.2 Rm A5 KV (J)
Wire (MPa) (MPa) (%) 20°C -40°C -196°C
19.9.L 400 580 38 69 59 40
19.9.Nb 440 625 38 72 61 34
19.12.3.L 355 555 33 69 60 66

Welding parameters

Direct current, with electrode positive is normally used.

Wire diameter (mm) Current, A Voltage, V Travel speed, mm/min
2.4 250-400 26-32 300-500
3.2 300-550 26-32 300-600
4.0 400-700 26-32 300-600

Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Sandvik materials.

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