OK Flux 10.63

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OK Flux 10.63 is an agglomerated, high-basic flux for submerged arc welding. It is used for multi-run welding of creep resistant Cr-Mo-alloyed steels when high toughness values are required, even after step cooling heat treatment. It can be used for single and multi-wire procedures, for butt and fillet welds and works equally well on DC and AC current. The flux is neutral in terms of Si and Mn alloying and thus it is perfect for multi-layer welding of unlimited plate thicknesses. It is well suited for narrow gap welding, due to good slag detachability and smooth sidewall blending. The optimum voltage is at the lower end of the voltage range. The weld metal produced has a very low level of impurities with well controlled X-factors with various wires. It has a low oxygen content, approx. 300ppm and hydrogen levels lower than 5ml/100g. OK Flux 10.63 is used in the petrochemical, chemical, power generation and pressure vessels industries, mainly for creep resistant steels when the requirements on toughness values are high. Due to the very clean weld metal, it is especially suited when stringent requirements after a step cooling treatment need to be fulfilled.


Grade S A FB 1 55 AC H5
Name EN ISO 14174


Country PL
Grade RD 03-613-03
Approvals are based on factory location. Please contact ESAB for more information.

Consumable Characteristics

Alloy Transfer No Silicon or Manganese alloying
Basicity Index nom: 3.0
Density nom: 1.1 kg/dm3
Diffusible Hydrogen max 5 ml H/100g weld metal (Redried flux)
Grain Size 0.2-1.6 mm (10x65 mesh)
Slag Type Fluoride-basic

Flux Consumption

Volts kg Flux / kg Wire DC+ kg Flux / kg Wire AC
26 V 0.7 kg 0.6 kg
30 V 1.0 kg 0.9 kg
34 V 1.3 kg 1.2 kg
38 V 1.6 kg 1.4 kg
Amps Dimensions Travel Speed
580 A Ø 4.0 mm 55 cm/min


OK Autrod 13.10 SC A5.23:EB2R/ 24598-A:S S CrMo1 A5.23: F8P4-EB2R-B2R
OK Autrod 13.20 SC A5.23:EB3R/ 24598-A:S S CrMo2 A5.23: F8P8-EB3R-B3R
OK Autrod 410NiMo 14343:S 13 4


Combined with Wire
*Selected production units only. Please contact ESAB for more information. Visit to download specific flux/wire combination fact sheets for more details.

Typical Mechanical Properties

Combined with Wire Condition Yield Strength Tensile Strength Charpy V-Notch Elongation
OK Autrod 410NiMo As Welded DC+ 900 MPa 1050 MPa 32 J
40 J
17 %

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr J-Factor Mn Mn+Si Mo PE Si X-bar
OK Autrod 13.10 SC AC, 565A, 30V
0.08 % 1.15 % 100 % 0.85 % 1.1 % 0.5 % 2.1 % 0.20 % <= 15 %
OK Autrod 13.10 SC DC+, 485A, 30V
0.075 % 1.1 % 100 % 0.8 % 1.1 % 0.5 % 2.1 % 0.25 % <= 15 %
OK Autrod 13.20 SC AC, 580A, 29V
0.08 % 2.1 % - 0.60 % - 1.0 % - 0.20 % <= 15 %
OK Autrod 13.20 SC DC+, 580A, 29V
0.07 % 2.1 % - 0.60 % - 1.0 % - 0.20 % <= 15 %

How to purchase OK Flux 10.63

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Part Numbers and Accessories

Part Numbers : OK Flux 10.63