Hastelloy˘ B-3

Available in any of the 'profile options'

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.

Chemical Composition

Specifications

Designations

Key Features

Typical Applications

Element	Min %	Max %
Ni	65.00	–
Cr	1.00	3.00
Mo	27.00	32.00
Fe	1.00	3.00
W	–	3.00
C	–	0.01
Si	–	0.10
Co	–	3.00
Mn	–	3.00
V	–	0.20
P	–	0.03
S	–	0.01
Ti	–	0.20
Cu	–	0.20
Al	–	0.50
Zr	–	0.10
Nb/Cb	–	0.20
Ta	–	0.20
Ni+Mo	94.00	98.00

ASTM B335
ASTM B619

W.Nr 2.4600
UNS N10675
AWS 051

Excellent corrosion resistance to hydrochloric acid at all concentrations and temperatures
Withstands sulphuric, acetic, formic & phosphoric acids & other non-oxidising media
Excellent resistance to pitting corrosion & stress corrosion cracking

Chemical processing

Density	9.22 g/cm³	0.333 lb/in³
Melting Point	1418°C	2585°F
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

Heat Treatment of Finished Parts
Condition as supplied by Alloy Wire	Type	Temperature		Time (Hr)	Cooling
Condition as supplied by Alloy Wire	Type	°C	°F	Time (Hr)	Cooling
Annealed or Spring Temper	Stress Relieve	400 – 450	750 – 840	2	Air

Properties
Condition	Approx. tensile strength		Approx. operating temperature
Condition	N/mm²	ksi	°C	°F
Annealed	1000 – 1200	145 – 174	-200 to +400	-330 to +750
Spring Temper	1600 – 2000	232 – 290	-200 to +400	-330 to +750