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NbHf Alloy C103 Sheet Plate ASTM B654
- Description
-
Grade Synonyms: NbHf C103, UNS R04295, Nb-10Hf-1Ti-0.7Zr, Nb-10Hf, Niobium Hafnium Alloy
Specification: ASTM B654, AMS 7852
Description: C103 is the most commonly used in superalloy aerospace area. For example, C-103 alloy (Nb-10Hf-1Ti-0.7Zr) was used as material of rocket nozzle for the lunar module and command module of Apollo spacecraft. The nozzle is subjected to wall temperature of 1500 degrees Celsius and a high velocity (maximum Mach 4.58) flow of combustion products.
Chemical Components(wt%):
C
O
N
H
Hf
Ti
W
Ta
Nb by difference
max
max
max
max
max
max
max
max
max
0.015
0.025
0.010
0.0015
9-11
0.7-1.3
0.500
0.500
....
Mechanical Properties of C103 at room temperature:
Grade
Composition (mass fraction)%
Modulus of elasticity,MPa
Tensile strength,MPa
Yield strength,MPa
Elongation/%
C-103
10Hf-1Ti-0.7Zr
112490
428.9
259.3
20
Physical Properties of Nb C103(Nb-10Hf-1Ti-0.7Zr):
Density
Melting Point
Thermal conductivity
Coefficient of thermal expansion
Working Temperature
8.85g/cm3
2350+/-50°C
41.9W·(m·K)-1
8.10(20~1205°C)/10-6K-1
1100~1450°C
Niobium C-103 alloy Sheet/Plate Applications:
Niobium C-103 alloys are always used in aerospace and satellite applications include the following:
High performance radiation-cooled thrust chamber of rocket engine, nozzle extension components, nozzle parts of liquid rocket engine, jet engine’s bushings, rocket exhaust systems, assembly of ramjet engine, etc.
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