Ni-Fe-Cr-Co super alloy haynes 556 / R30556

In the forms:

Pipes,tubes

Buttweld Fitting

Round,Square,flat bars,rods

Plates,Sheets,Strips

Flanges & Other kinds of forgings products

 

Nickel-Iron-Chromium-Cobalt UNS R30556,super alloy Haynes 556

 

Chemical Compostion:

Material

Ni

Cr

Iron

Mn

Al 

Si     max

S    max

Mo 

P       max

Zr

W

Cb

Co 


N

Ta



La


B

R30556

19.0-22.5

21.0-23.0

remainder

0.50-2.00

0.10-0.50

0.05-0.15

0.20-0.80

0.015

2.5-4.0

0.04

0.001-0.10

2.0-3.5

0.30

16.0-21.0


0.10-0.30

0.3-1.25


0.005-0.10

0.02


























 Mechanical Properties:

Material

Tensile Strength,Min PSI (MPa)

Yield Strength (0.2% offset) Min(Mpa)

Elongation in 2 in. or 50mm or 4D,Min.,%

R30556

100000(690)

45000(310)

40


Standards:

Material

Seamless Tubing &/or Pipe

Welded Tubing

Welded Pipe

Buttweld fitting

Plate/Sheet/Strip

Bar Forging and Forging stock

R30556

B622,SB-622

B626,SB-626

B619,SB-619

B366,SB-366

B435,SB-435

B572,SB-572

 

Super alloy HAYNES(r) 556 alloy has good strength and carburization and oxidation resistance at elevated temperatures. It also has excellent welding and forming characteristics.

Fabrication and Heat Treatment

Machinability

HAYNES(r) 556 alloy™ can be machined using conventional techniques employed for iron based alloys. High speed operations like milling, grinding or turning can be performed using water-base coolants. Heavy lubricants are recommended for operations such as boring, broaching, tapping or drilling.

Forming

HAYNES(r) 556 alloy can be formed by conventional means. For cold forming this alloy, heavy-duty lubricants can be used.

Welding

Welding of HAYNES(r) 556 alloy is performed through commonly used welding techniques like gas tungsten arc welding, shielded metal-arc welding, metal-arc welding and submerged-arc welding. However, an alloy filler metal that suits this alloy should be used.

Forging

HAYNES(r) 556 alloy can be forged at temperatures ranging from 927 to 1177°C (1700 to 2150°F).

Cold Working

HAYNES(r) 556 alloy can be cold worked using standard tooling methods. As plain carbon steels has an ability to produce galling, they are not preferred for forming this alloy. Galling can be minimized with the help of soft die materials.

Annealing

HAYNES(r) 556 alloy can be annealed at 1177°C (2150°F) followed by rapid cooling of air and water quenching.

Hardening

HAYNES(r) 556 alloy can be hardened by cold working.

Applications

The following are the major applications of HAYNES(r) 556 alloy:

  • Incinerators

  • Gas turbines

  • Heat transfer systems


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