601 / 2.4851

Alloy 601H is a nickel-chromium-iron alloy with additions of aluminium and titanium. It is characterized by:

- outstanding resistance to oxidation at high temperatures

- good resistance to carburizing conditions

- good resistance to stress-corrosion cracking

- good resistance at oxidating, sulfur-containing atmospheres good mechanical properties at both room and elevated temperatures due to solid solution hardening

Material Data Sheet

Material Designation	2.4851
Alloy	Alloy 601H
EN Material Symbol	NiCr23Fe
UNS	N 06601
Trademark	Nicrofer® 6023-H
ISO	NiCr23Fe15Al

Main fields of application of alloy 601H

In the sector of elevated temperatures, Alloy601H has a wide variety of applications. Apart from applications in furnace construction, chemical processing, pollution control and power generation, there is a variety of further purposes, i.e.:

- refractory anchors, strand-annealing and radiant heater tubes, high-velocity gas burners, wire mesh belts in industrial furnaces

- trays, baskets and fixtures for heat treatment plant , i.e. for carbonization or carbonitiding

- combustion chambers in solid waste incinerators

- components in exhaust gas systems

- tube supports and ash-handling components

Chemical composition of alloy 601H

C	Si	Mn	P	S	Cr
≤ %	≤ %	≤ %	≤ %	≤ %	%
0.03-0.1	0.5	1.0	0.02	0.015	21.0-25.0

Al	Ni	Ti	Cu	Fe	B	Co
%	%	%	≤ %	≤ %	≤ %	A max. of 1,5% Co, which is valued as Nickel, is allowed.
1.0-1.7	58.0-63.0	0.5	0.5	18.0	0.006	No value for Co specified in ASTM.

Characteristics of alloy 601H

Temperature Range	High-Temperature Range
Density	8,1 g/cm³
Melting Rage	1320°C – 1370°C
Elongation of Alloy 601H plate at 20°C	≥ 30 %

Filler metal (for welding with alloy 601H)

For the gas-shielded welding processes, filler metal with an overalloyed composition compared to the base metal is recommended:

Welding rods and bare electrodes 2.4649:

DIN EN ISO 18274: S Ni 6602 (NiCr25Fe10AlY)
UNS N06025
AWS A5.14 ERNiCrFe-12

Covered electrodes 2.4633:

DIN EN ISO 14172: E Ni 6704 (NiCr25Fe10Al3YC)
UNS W86025
AWS A5.11: ENiCrFe-12

2.4628

Delivery program

Sheets / Plates mm

2 - 20

With short delivery time:

plates or sheets, tubes, flanges, forged or die-cut rings and round blanks, elbows, T-fittings, reductions, screws, nuts or washers according to your request. according to your individual wishes, we are able to cut our material with our plasma- or water jet cutter. Our material is stocked in superformats of 2000x6000mm. Cut to size on request.

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