Hastelloy B-3^* Specification
*Trade name of Haynes International

This Nickel-Molybdenum alloy gives excellent resistance to hydrochloric acid at all concentrations and temperatures from ambient to high. It also withstands sulphuric, acetic, formic and phosphoric acids and other non oxidizing media. B-3 also has excellent resistance to pitting corrosion and to stress-corrosion cracking. Hastelloy B-3 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

Approximate Chemical Composition
Ni	65% min
Mo	28.5%
Cr	1.5%
Fe	1.5%
Co	3% max
W	3% max
Mn	3% max

Properties
DENSITY	9.22 g/cm3	0.333 lb/in3
MELTING POINT	1418oC	2585oF
COEFFICIENT OF EXPANSION	10.6 µm/m °C (20 - 100°C)	5.7 x 10-6 in/in °F (70 - 212°F)
MODULUS OF RIGIDITY	83 kN/mm2	12038 ksi
MODULUS OF ELASTICITY	216 kN/mm2	31329 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	1000 - 1200 N/mm2	145 - 174 ksi	-200 to +400oC	-330 to +750oF
Spring Temper	1600 - 2000 N/mm2	232 - 290 ksi	-200 to +400oC	-330 to +750oF