Brand: Kjellberg

Kjellberg CROMO 1B E8018-B2 Creep-Resistant Stick Electrode

Name: Kjellberg CROMO 1B E8018-B2 Stick Electrode – Datasheet
Brand: Kjellberg
SKU: CROMO 1B

Description

Basic-coated electrode for 1Cr-0.5Mo boiler and pipe steels

The Kjellberg CROMO 1B is a basic-coated stick electrode for joint welding on boiler and pipe steel and similar chromium-molybdenum-alloyed, pressure-hydrogen-resistant steel. Kjellberg states that it is preferably used for the steel 13CrMo4-5 at working temperatures of up to 550 degrees C, and that it is well suited for joint welding and surfacing on similar-alloyed case-hardened and heat-treated steel. It is classified E CrMo 1 B 42 under ISO 3580-A and E 8018-B2 under AWS A5.5.

Technical specifications

Parameter	Specification
Manufacturer	Kjellberg Finsterwalde Elektroden und Zusatzwerkstoffe GmbH
Product	CROMO 1B stick electrode, creep resistance
Coating	Basic
ISO 3580-A	E CrMo 1 B 42
AWS A5.5	E 8018-B2
Weld metal composition, typical	C 0.08 %, Si 0.4 %, Mn 1.0 %, Cr 1.0 %, Mo 0.5 %
Yield strength Re	Above 400 MPa
Tensile strength Rm	510 to 650 MPa
Elongation A5	Above 20 %
Charpy ISO-V at +20 deg C	Above 80 J
Preheat and interpass temperature	250 to 350 degrees C, depending on steel, shape and thickness
Re-drying	300 to 350 degrees C for 2 hours
Post-weld tempering	Minimum 0.5 h at 700 degrees C, cooling in still air
2.50 x 350 mm	90 to 110 A; 4.3 kg per pack; 192 pieces; item 00.490.253
3.25 x 350 mm	110 to 150 A; 4.8 kg per pack; 140 pieces; item 00.490.323
4.00 x 350 mm	140 to 180 A; 4.8 kg per pack; 94 pieces; item 00.490.403 (made to order)

Base materials and heat treatment

The data sheet lists material numbers 1.7218 (25CrMo4), 1.7254 (20CrMo4), 1.7258 (24CrMo5), 1.7262 (15CrMo5), 1.7335 (13CrMo4-5), 1.7337 (16CrMo4-4), 1.7350 (22CrMo4-4) and 1.7354 (G22CrMo5-4) among the materials suited to this electrode. Mechanical values are quoted for heat treatment A, with the heat treatment details given as tempering for at least 0.5 hours at 700 degrees C, and annealing for 0.5 hours at 950 degrees C followed by 0.5 hours at 700 degrees C. Preheat, interpass temperature and post-weld treatment always follow the welding procedure specification for the actual component.

Handling

Basic coatings pick up moisture, so redry at 300 to 350 degrees C for two hours as listed and keep the electrodes warm in a holding oven before use. The 4.00 mm size is not a standard stock article and is produced only to customer order.

Documents and quotation

The attached Kjellberg CROMO 1B data sheet gives the data listed on this page. For a quotation please send the diameter and length, quantity and packaging, the base material and the welding procedure it is to be used in. Related items are listed under Welding Electrodes.

Datasheets & Documents

Datasheet Kjellberg CROMO 1B data sheet (EN) Download

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About brand

Kjellberg Finsterwalde is a German manufacturer of plasma cutting systems, welding technology and welding electrodes, based in Finsterwalde. The company traces its history to Oscar Kjellberg, who obtained the 1908 German patent for the coated welding electrode, and it has operated in Finsterwalde since 1922. Seven Star LLC, an independent supplier in Muscat, lists the Kjellberg CUTFIRE air plasma cutting systems and sources Kjellberg equipment for fabricators and workshops.

Kjellberg product groups

The cutting range runs from mobile CUTFIRE air plasma units for hand-held and mechanised work to automated systems such as HiFocus, Smart Focus and the iQ and Q series, with KjellCut torches and the Q-Torch automatic torch-change system. On the welding side Kjellberg lists coated electrodes for unalloyed, high-temperature, stainless, nickel-base, cast iron, underwater and surfacing work, plus submerged-arc and TIG welding technology.

Ordering Kjellberg equipment: what we need

Give the model name, the mains voltage and frequency, the material and thickness to be cut, and whether the system will be used hand-held or on a cutting table. For plasma systems also state the torch hose length and whether a CNC interface is needed.