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CREEP RESISTANT ELECTRODES

SUNTHERM CR 9 PDF

 

 

CLASSIFICATION:

AWS: A 5.5 : E 8018B8
IS 1395 : E 55 BB 820

DESCRIPTION:

SUNTHERM CR 9 is a basic coated all position electrode for welding of creep resistant steels alloyed with 9% Cr, 1% Mo deposit. The weld met is highly resistant to corrosion and hydrogen attack at high temperatures. Weld deposit is of radiographic quality & appearance is smooth and even.

TYPICAL ALL WELD METAL PROPERTIES:

Chemical Composition (%) Mechanical Properties
C 0.05-0.10 max Mn 1.0 max YS 48-56 kg/mm2
Si 0.90 max S 0.03 max UTS 58-68 kg/mm2
P 0.03 max Cr 8.0-10.50 EL (L=4d) 20-28%
Mo 0.85-1.20

TYPICAL APPLICATIONS:

It is intended for welding of steels with similar composition. These steels are often found in oil refineries, chemical and petrochemical industries, power plants where it has to resist corrosion and hydrogen attach at high temperatures.

CURRENT RANGE & PACKING DATA:

Size Length Current Range Qty of Electrodes in a Qty of Electrodes in a
(mm) (mm) (Amps) Carton Cardboard Box
2.5 350 70-110 5 Kg 20 Kg
3.15 450 100-130 5 Kg 20 Kg
4.00 450 140-180 5 Kg 20 Kg
5.00 450 180-250 5 Kg 20 Kg

PACKING:

Electrodes are packed in Cartons and four of these Cartons are shrink wrapped in a cardboard box.