Chemical Composition of 15NiCuMoNb5

[arcpro]

Can somebody please tell me the chemical composition of 15NiCuMoNb5?

[ashfaqanwer]

Min. Max.
Carbon 0.170
Manganese 0.8000 1.200
Silicon 0.2500 0.500
Phosphorus 0.030
Sulfur 0.025
Aluminum 0.0150
Chromium 0.300
Copper 0.5000 0.800
Molybdenum 0.2500 0.500
Columbium (Niobium) 0.0150 0.045
Nickel 1.0000 1.300
Nitrogen 0.020

[arcpro]

Thanks Ashfaq.
By the way, I know this is a pressure plate, do you know where is it used normally?

[sadia.shahab]

15NiCuMoNb5 is normally used for steam drums & seamless boiler tubes upto 500°C. Max. thickness in case of plate is 300mm.

[ashfaqanwer]

Yes, Sadia is right. Its basically a low alloy steel plate used for pressure vessels at increased temperatures.

[arcpro]

Thanks everybody for the inputs.

[Nabeel Ahmed Qureshi]

ASTM No for above material?

[sadia.shahab]

There is no ASTM equivalent for 15NiCuMoNb5.

[ashfaqanwer]

Following ASTM materials may be considered as an equivalent of 15NiCuMoNb5 steel.

ASTM A302 Gr. B
ASTM A302 Gr. C
ASTM A508 Gr. 2
ASTM A508 Gr. 2A
ASTM A508 Gr. 3
ASTM A508 Gr. 3A
ASTM A533 Gr. B
ASTM A533 Gr. C
ASTM A533 Gr. D

These matches are given by AWSTEELS (Atlas of World Steels and Alloys) program.