Hastelloy B-2

Hastelloy B-2 is a Nickel base wrought alloy with excellent resistance to hydrochloric acid at all concentrations and temperatures from ambient to high. B-2 also withstands hydrogen chloride, sulphuric, hydrofluoric, acetic and reagent grade phosphoric acids. This alloy also has excellent resistance to stress corrosion cracking and to knife line and heat affected zone attack. Hastelloy B-2 is not recommended in the presence of ferric or cupric salts.

Good Mechanical Properties at Elevated Temperatures No
Corrosion Resistant at Ambient Temperatures Yes
Corrosion Resistant & Good Mechanical Properties at Elevated Temperatures No
Oxidation Resistant No
Precipitation Hardenable No

Applications include:

  • Chemical processing
Approximate Chemical Composition
Ni 69%
Mo 28%
Fe 2% max
Cr 1% max
Co 1% max

 

Properties
DENSITY 9.22 g/cm3 0.333 lb/in3
MELTING POINT 1370oC 2500oF
COEFFICIENT OF EXPANSION 10.3 µm/m °C 
(20 – 100°C)
5.7 x 10-6 in/in °F
(70 – 212°F)
MODULUS OF RIGIDITY 84 kN/mm2 12183 ksi
MODULUS OF ELASTICITY 217 kN/mm2 31474 ksi

 

CONDITION OF SUPPLY HEAT TREATMENT (AFTER FORMING)
Annealed/Spring Temper Stress relieve at 400 – 450oC (750 – 840oF) for 2 hours and air cool.

 

CONDITION APPROX TENSILE STRENGTH APPROX SERVICE TEMPERATURE
Annealed 900 – 1100 N/mm2 131 – 159 ksi -200 to +400oC -330 to +750oF
Spring Temper 1400 – 1900 N/mm2 203 – 276 ksi -200 to +400oC -330 to +750oF