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Electrodes for Creep Resisting Steels

CROMOTHERME-1(MOD)

AWS: SFA 5.5 E8018-B2 IS: 1395 E 55BB2 26Fe EN ISO CODE: 3580-A E CrMo1 B 4 2 H5

Weld metal having lesser impurities i.e. S, P, will improve the subzero impact property and retains its mechanical properties after prolonged heat treatments. Ideal for welding similar composition materials. The weld metal displays excellent tensile strength and creep resistance. Specially applicable wherever the impact o property requirement at subzero temperatures up to minus 20 C.

Precaution

1. Ensure the electrodes are dry. Re-dry the electrodes at 250-300 C for one hour.

2. Use short arc, low current and stringer beads.


Note : Low carbon version Cromotherme 1L(MOD) conforming to AWS:E7018-B2L

is also available.

Approvals
    BHEL
    CE
CHEMICAL COMPOSITION OF ALL WELD METAL (%)


Element
CMnSiSPCrMoSnAsSb
Percent
0.060.760.490.0070.0101.250.500.0020.0040.002


MECHANICAL PROPERTIES OF ALL WELD METAL


UTSYSElongation
CVN Impact Strength (J)
CVN Impact Strength (J)
Creep Strength at 550°C
(MPa)
(MPa)
(L= 5d)%
at Minus -20°C
20°C
(1%offset in 10,000 hrs)
62053022
80
100
120 MPa

DIFFUSIBLE HYDROGEN CONTENT: 5 ml/100 gms of weld metal (max.).



CURRENT AND PACKING DATA: DC (+)


Size (mm)
6.3x4505x4504x350
3.15x350
2.5x350
Current Range (Amps)
250-300200-250140-180
100-130
70-100
Qty. (Pcs./Carton)
253050
75100