Electrodes for Creep Resisting Steels

CROMOTHERME-9(MOD)

AWS: SFA 5.5 E9018-B91 EN ISO CODE: 3580-A E CrMo91 B 4 2 H5

A low hydrogen, iron powder electrode depositing 9Cr - 1Mo weld metal modified with Aluminium, Niobium, Vanadium and Nitrogen, designed to provide improved creep strength, toughness, fatigue life, oxidation and corrosion resistance at elevated temperatures. It is designed to weld the materials in power plant and refineries. Following are some of the steels that can be welded with this electrode.

I) Plate: A 387 Gr. 91 (II) Pipes: A 335 - P91 (III) Tubes: A 213 - T91

Precaution

1. Ensure the electrodes are dry. Re-dry the electrodes at 300°C for 2 hours.

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

Approvals

CIB-MP

CHEMICAL COMPOSITION OF ALL WELD METAL (%)

Element	C	Mn	Si	P	S	Cr	Ni	Mo	V	Nb	N	Cu	Al
Percent	0.10	0.65	0.25	0.007	0.008	9.00	0.45	1.00	0.20	0.06	0.03	0.02	0.02

MECHANICAL PROPERTIES OF ALL WELD METAL

(PWHT : 760 C FOR 2 HRS)

UTS	YS	Elongation	Hardness	CVN Impact Strength (J)
(MPa)	(MPa)	(L= 5d)%		at 20°C
685	575	19	220HV	60

DIFFUSIBLE HYDROGEN CONTENT: 5 ml / 100 gms of weld metal Max. (When measured according to AWS-4.3-86 Specification).

CURRENT AND PACKING DATA: DC (+)

Size (mm)	5x450	4x350	3.15x350	2.5x350
Current Range (Amps)	160-220	130-160	90-120	60-90
Qty. (Pcs./Carton)	30	50	75	100

+919833550505 info@dnhsecheron.net

Electrodes for Creep Resisting Steels

CROMOTHERME-9(MOD)

Electrodes for Creep Resisting Steels

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