1245 N

 

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DIN 8575                           E CrMo 2 B 26

PrEN 1599                  E CrMo 1 B 32 H10

AWS/ASME SFA-5.5        E 9018 - B 3-H8

 

Application / Properties: Electrode for welding of creep resistant and high-pressure hydrogen resistant steels used in the construction of pressure vessels, boilers and piping subjected to operating temperatures up to+600C.Owing to its double covering (up to 3.25mmǾ), the electrode shows a stable and concentrate arc, thus being well suited for root pass and positional welding . weld are of X-ray quality.

Preheating, inter-pass temperature and post-weld heat treatment in accordance with base metal to be welded.

Weld metal analysis in % (typical values):

C	Mn	Si	Cr	Mo
0.06	0.80	0.50	2.40	1.00

 

Mechanical Properties of all-weld metal :

(single values are typical values)

 

	Yield Strength (N/mm2)	Tensile Strength (N/mm2)	Elongation A5(%)	ISO-V Impact energy (j) +200C
T T+N	>440 >350	570-670 500-600	>22 >24	100 140

 

 T : tempered 0.5 h at 700C,air cooling

 T+N : normalized + tempered 0.5 h at 920C, air cooling +0.5 h at 750C

Amperage:
2.5Ǿ	3.25 Ǿ	4.0Ǿ	5.0Ǿ
50-85	85-130	90-180	150-240

Materials:

Creep and high-pressure hydrogen resistant steels e.g   10 CrMo 9 10, 12 CrMo 9 10, 10 CrSiMo V 7, 24 CrMo 10, GS-12 CrMo 9 10 GS-19 CrMo 9 10 as well as similar cementation and heat treatable steels with up to 2% Cr.

 

 

Redrying : required at 300°C to 350°C for 2hrs.