H astelloy C
The alloy has many excellent corrosion resistant alloys, which have good resistance to oxidation and moderate reduction corrosion. Nuclear energy industry, chemical industry, petroleum industry, pressure vessel heat exchanger, plate cooler, etc.
Common number and number corresponding to Hastelloy C
|
Category |
General name |
Unified Digital Number Number Number |
GB of China |
|
|
New brand |
Old brand |
|||
|
Ni-Cr-Mo |
Hastelloy C (55Ni16Mo16Cr4W) |
N30002 |
NS3303 |
NS333 |
Hastelloy C corresponding casting forgings and bar grades
|
Cast castings |
Forgings (similar deformed alloys) |
Bar |
|||
|
Specification No. |
Licence |
Specification No. |
Licence |
Specification No. |
Licence |
|
ASTM A 494ASTM A 744 |
CW-12MW |
ASTM A 597Cr.4 |
N10002 |
B 564 |
N10002 |
|
Hastelloy C physical properties |
||||||||
|
Density |
Melting point |
Thermal conductivity |
Specific heat capacity |
Elastic modulus |
Shear modulus |
resistivity |
Poisson's ratio |
Line expansion coefficient |
|
g/cm3 |
℃ |
λ/(W/m•℃) |
J/kg•℃ |
GPa |
GPa |
μΩ•m |
a/10-6℃-1 |
|
|
8.94 |
1350 |
... |
... |
210-103 |
... |
... |
... |
... |
Hastelloy C chemical composition
|
Licence |
UNS Number |
Chemical element% |
C |
Mn |
Si |
P |
S |
Mo |
Fe |
Ni |
Cr |
W |
Ksi[Mpa] of minimum tensile strength |
Minimum yield strength Ksi[Mpa] |
Minimum elongation,% gauge 2 inches |
|
CW12MW |
N30002 |
Max |
0.12 |
1.0 |
1.0 |
0.04 |
0.03 |
16.0-18.0 |
4.5-7.5 |
Balance |
15.5-17.5 |
3.75-5.25 |
72[495] |
40[275] |
4 |
Hastelloy C temperature range
|
General name |
Specification No. |
Licence |
Temperature range |
|
Ni-Mo-Cr |
ASTM B 744 |
CW-12MW |
Temperature applicable ≤538℃ Use only solid-soluble materials |
Hastelloy C heat treatment requirements
|
Materials |
Heat treatment requirements |
|
CW-12MW |
Heat up to more than 1175℃, keep enough time to heat the casting to this temperature, then quench it in water or otherwise quench it. |
Hastelloy C corrosion properties
|
Medium |
|
Corrosion of oxidizing acids such as nitric acid, nitric acid and sulfuric acid, mixed acid, gallic acid and sulfuric acid, as well as corrosion of oxidizing salts or media containing other oxidants such as hypochlorite at higher temperatures than normal temperature |
|
Good corrosion resistance to seawater, acetic acid, wet chlorine, can also be used in chlorine or chloride-containing media. But the corrosion resistance of Ni-Mo alloy in hydrochloric acid is not as good as that of Ni-Mo alloy |
|
when used in the sensitized state, it is easy to produce intergranular corrosion in chlorinated medium and chloride-containing medium. Hastelloy C sensitized in the range ℃704~1038 for less than 10 seconds produces intergranular corrosion. |