Nickel- chrome alloy featuring outstanding performance both in corrosion and heat resistance.

Aerospace & Energy Materials Dept.

Main Features

Wide range of application of corrosion and heat resistance MA600 is a nickel-chrome-ferric alloy that has excellent resistance to all corrosive substances. This is a highly reliable alloy because it does not develop chloride corrosion cracking that appears in stainless steel. Nickel is added to this alloy to strengthen resistance to wide range of acids, alkalies, organic and inorganic material. The addition of chrome improves resistance to sulfides in corrosive environment and to oxidizing acids.
Furthermore, the oxidation film generated in high temperatures is stable, and it keeps its resistance even at high temperatures in which heating and cooling processes are repeated. The alloy has high resistance to nitriding and is used for industrial furnace material, etc.

Examples of application

Water treatment devices, food industry equipments, milk treatment, magnesium chloride evaporators or corrugated steam tubes inside open condensers, plug-in heaters, nitrosyl chloride and chlorine separation tower, photo material production and film processing equipment, textile industry that uses chromate and permanganate, leather industry, fermenter of penicillin and streptomycin, tall oil recovery equipment for the craft paper pulp industry, light water reactor heat exchangers, exhaust systems of aircrafts, heating device, nitriding furnace and heat treatment furnace parts, etc.

Available Product Forms

Various shapes, such as flat-rolled plates, forgings, welding wires, wires, welded pipes and tubes, seamless pipes and tubes can be manufactured.


Information on specifications to which MA600 alloy can be ordered.


Plates Bars, Wires, Forgings Pipes and Tubes Joints
B168 B166 B163 B366
  B564 B167  


Plates Bars, Wires, Forgings Pipes and Tubes Joints
SB168 SB-166 SB-163 SB-366
  SB-564 SB-167  


Plates Bars Pipes and Tubes
G4902 G4901 G4903

AMS UNS N06600

Plates Bars, Wires, Forgings
5540 5665

Mechanical Properties

Typical mechanical property

  Tensile strength (N/mm2) Yield strength (0.2%offset) (N/mm2) Elongation% Hardness
Bar (Annealed) 660 280 45 HB150
Plate (Annealed) 670 310 43 HRB87


MA 600 can be easily welded by either arc welding or inert gas welding. However, to prevent pitting or cracking, use of excessive electric current must be avoided. In addition, in case of arc welding, adequate cleaning is important after welding to achieve sufficient corrosion resistance. The following table shows welding methods and points to note concerning the material used.

Welding methods and points to note concerning the material used

Method Standard thickness Welding rod and solder Points to note
Arc welding 1.27mm or thicker Inconel 132 Arc rod Cleaning is important
Inert gas metal arc welding 3.2mm or thinner Inconel Filler metal 62,82 Shorten arc length
Oxy-acetylene 3.2mm or thinner Inconel Filler metal 62 and Incoflux 4 Use weak reduction flame
Silver solder   Various non-phosphorus containing silver brazing filler metal and appropriate flux Use only where corrosion doesn`t occur. Also avoid excessive heating and high stress during the works
Soft solder   Various soft brazing filler metal and acid flux Use only where corrosion doesn`t occur and where no strength is applied
Resistance welding spot seam projection flash 3.2mm or thinner
1.27mm or thicker
2.High pressure
3.Adjust shape
Inconel, Incloflux are registered trademarks of Special Metals Corporation.