CROMOTHERME-1(RTE) - E8018-B2
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Electrodes for Creep Resisting Steels

CROMOTHERME-1(RTE)

AWS: SFA 5.5 E8018-B2 EN ISO CODE: 3580-A E CrMo1 B 3 2 H5

Weld metal having strict control on S, P, As, Sn & Sb will improve the subzero impact property and resists temper embrittlement. Weld metal retains its mechanical properties after prolonged heat treatments. Ideal for welding steam generating equipments and reactor vessels. The weld metal displays excellent tensile strength and creep resistance. Specially applicable wherever temper embrittlement resistance is required.

Precaution

1. Ensure the electrodes are dry. Re-dry the electrodes at 300-350 C for one hour.

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

Approvals
    CE
CHEMICAL COMPOSITION OF ALL WELD METAL (%)


Element
CMnSiCrMoSbAsSPSnCuNiTiV
Percent
0.060.600.251.300.550.0010.00350.0090.0090.0030.0180.0140.020.008


MECHANICAL PROPERTIES OF ALL WELD METAL




YS

UTS


Elongation

CVN Impact Strength (J)

Hardness

(MPa)

(MPa)

(L= 5d)%

at Minus 33°C

(VPN)

SR at 690 C/ 1 hr

500

580

24

-

-

SR at 690°C/ 2.5 hrs

450

540

28

150

200

SR at 690°C/ 16 hrs

390

520

30

170

-


DIFFUSIBLE HYDROGEN CONTENT: 4 ml/100 gms of weld metal (max.).

X-FACTOR : (10P + 5Sb + 4Sn + As)/100 ≤ 12.0 (Elements in ppm)

4 J-FACTOR: (Si + Mn) x (P + Sn) 10 ≤ 125

STEP COOLING REQUIREMENT: CvTr40 +2.5 Ä CvTr40Sc < 10°C (Where CvTr40: Transition temperature at absorbed energy of 40J of heat treated specimen. Ä CvTr40Sc: Shift in 40J transition temperature due to step cooling)

CURRENT AND PACKING DATA: AC / DC(+)


Size (mm)
6.3x4505x4504x350
3.15x350
2.5x350
Current Range (Amps)
250-300200-250140-180
100-130
70-100
Qty. (Pcs./Carton)
253555
75100


Electrodes for Creep Resisting Steels

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