Sandvik 29.8.2.L (Welding wire)
Datasheet updated 2012-08-02 19:10:27 (supersedes all previous editions)
Sandvik 29.8.2.L is a filler material suitable for welding the super-duplex grade Sandvik SAF 2906. It is used for gas shielded arc welding and submerged-arc welding. Sandvik 29.8.2.L is available as wire and rods.
Standards
- UNS S32906
Chemical composition - filler metal
| C | Si | Mn | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| max | max | max | ||||||
| 0.025 | 0.4 | 1.0 | 0.020 | 0.015 | 29 | 7 | 2.4 | 0.36 |
Chemical composition - all-weld metal
The following data is typical for non heat treated all-weld metal made by TIG welding with Argon+2%N2 shielding gas.
| C | Si | Mn | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| max | max | max | ||||||
| 0.025 | 0.4 | 1.0 | 0.020 | 0.015 | 29.0 | 6.8 | 2.3 | 0.35 |
The following data is typical for non heat treated all-weld metal made by SAW and flux, Sandvik 15W.
| C | Si | Mn | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| max | max | |||||||
| 0.02 | 0.6 | 0.8 | 0.020 | 0.015 | 28.5 | 6.8 | 2.3 | 0.32 |
Microstructure - all-weld metal
Austenitic-ferritic (duplex) microstructure with approximately 50 FN, calculated from the WRC-92 diagram.
Mechanical properties - all-weld metal
|
Temperature
|
°C
|
20
|
|---|---|---|
|
Yield strength, RP0.2
|
MPa
|
670
|
|
Tensile strength, Rm
|
MPa
|
880
|
|
Elongation, A
|
%
|
25
|
|
Impact strength, Charpy V
|
J
|
150
|
|
Temperature
|
°C
|
20
|
|---|---|---|
|
Yield strength, RP0.2
|
MPa
|
660
|
|
Tensile strength, R
|
MPa
|
860
|
|
Elongation, A
|
%
|
25
|
|
Impact strength, Charpy V
|
J
|
115
|
Physical properties- all-weld metal
Thermal conductivity, W/m °C, at 20 oC (68 oF) 16
Thermal expansion per °C, from 20°C (68 oF) to 400°C (750 oF) 14.5x10-6
Density, g/cm3, at 20 oC (68 oF) 7.9
Corrosion resistance- all-weld metal
Intergranular corrosion
Streicher (ASTM A262 PrB) 0.15 mm/year
Recommended welding data
TIG welding
The parameters for TIG welding depend largely upon the base metal thickness and the welding application.
Electrode negative and a shielding of Argon+2%N2.
Submerged-arc welding
Electrode positive is suggested for joint welding to give good penetration.
| Wire diameter, mm | Current, A | Voltage, V |
|---|---|---|
| 2.0 | 200-300 | 28-32 |
| 2.4 | 250-450 | 28-32 |
| 3.2 | 300-500 | 29-34 |
Recommended flux is Sandvik 15W.
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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