CEWELD


Dur 12U SMAW Stick Electrodes




Dur 12U

 
TYPE 
Cobalt-based thermo shock resistant alloy for overlay applications.
APPLICATIONS 
Steam-valves, high temperature liquid pumps, hot cutting tools, cutting tools for plastic, wood and paper as well as high stressed sealings and sliding surfaces.
PROPERTIES 

Outstanding alloy against abrasion, thermo-shock and corrosion combined with high temperatures. The weld deposit can be machined with tungsten tool tips and by grinding. The hardness of the weld deposit will degreas 20% at 600°C and has a nominal hardness of 49-53 HRc at room temperature. The weld deposit is high heat resistant up to 900°C. Dur 12 offers a low coefficient of friction of and exceptional resistance to galling. It has cavitation-erosion resistance ten times that of 304 stainless steel, Dur 12 can be used to protect bearing surfaces in non-lubricating conditions due to its resistance to metal-to-metal wear.
 

CLASSIFICATION
AWS 
A 5.13: R CoCr-B
EN ISO 
14700: E Co3
DIN 
8555: E20-UM-50-CSTZ
SUITABLE FOR 

46-48 HRc, stellite 12 alloy with high temperature and abrasion resistance, thermo shock resistant and impact resistant, hardfacing valves, seats, pumps, knives, plastic recycling crushers etc.

WELDING POSITIONS: 
WELD METAL ANALYSIS %

C

Co

Si

Cr

Ni

W

Fe

     

1.8

Base

1.0

29.0

<2.5

8.8

<2.5

     
MECHANICAL PROPERTIES

Heat

RP0,2

Rm

A5

Hardnes HRc

Treatment

(N/mm2)

(N/mm2)

(%)

20°C

300°C

600°C

AW

     

50

46

40

AW: as welded
REDRYING TEMPERATURE 
300°C / 2hr
WELDING PARAMETERS PACKING

Welding Parameters

Packing

D (mm)

Length (mm)

Current (A)

kg / can

kg / 6 pack

2.5

350

70-90

   

3.2

350

90-130

2.8

16.8

4.0

350

120-160

   







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