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HASTELLOY B-2 COMPOSITION

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Super Alloy HASTELLOY(r) B-2 alloy

Related Metals:

Nimofer 6928(tm)
Nickelvac HB-2(tm)
HASTELLOY(r) B-2 alloy(tm)                                    

Specifications:

ASTM B333
ASTM B335
ASTM B366
ASTM B564
ASTM B619
ASTM B622
ASTM B626
DIN 2.4615
DIN 2.4617
GE B50T38
UNS N10665

Chemistry Data

Carbon

0.02 max

Chromium

1 max

Cobalt

1 max

Iron

2 max

Manganese

1 max

Molybdenum

27 - 29

Nickel

Balance

Phosphorus

0.04 max

Silicon

0.1 max

Sulphur

0.03 max

General Information

Principal Design Features

A wrought nickel-molybdenum alloy that can be used in the as welded condition. It is highly resistant to all concentrations and temperatures of hydrochloric acid. Also resistant to stress corrosion cracking and pitting. Because of the high molybdenum


Applications

Chemical process equipment.


Machinability

Machinable by conventional techniques.


Forming

May be formed by standard techniques as used with stainless steels.


Corrosion Resistance

Excellent corrosion resistance to all concentrations of common boiling acids. Average corrosion rates for media shown are: Media Concentration Corrosion Rate mils per year Sulfuric acid All up to 70%


Welding

The alloy is readily weldable by all methods and may be used in the as welded condition.


Heat Treatment

Solution treated at 1950 F and rapid quenched. This is the normal condition in which the product forms are furnished and used. Bright annealed product forms (sheet & strip) are solution treated at 2100 F and then cooled in a hydrogen atmosphere to preve


Forging

Readily forged at temperatures 2250 F to 1800 F.


Hot Working

Can be hot worked by conventional means.


Cold Working

Can be readily cold worked by conventional means.


Annealing

Anneal following extensive work hardening due to cold working by 1950 F soak followed by rapid quench. Note that bright finish parts must be solution annealed and rapid cooled in an inert (argon gas) or reducing (hydrogen) atmosphere to prevent surface o


Hardening

Hardens by cold working not heat treatment.


Physical Data

Density (lb / cu. in.)

0.33

Specific Gravity

9.22

Specific Heat (Btu/lb/Deg F - [32-212 Deg F])

0.093

Electrical Resistivity (microhm-cm (at 68 Deg F))

825

Melting Point (Deg F)

2600

Thermal Conductivity

85

Mean Coeff Thermal Expansion

5.7

Modulus of Elasticity Tension

31.4

Mechanical Data

Form

Plate

Condition

Heat treated at 1950 F(1066 C)

Temper

70

Tensile Strength

131

Yield Strength

60

Elongation

60

Rockwell

B94


Form

Plate

Condition

Heat treated at 1950 F(1066 C)

Temper

392

Tensile Strength

127

Yield Strength

53

Elongation

59


Form

Plate

Condition

Heat treated at 1950 F(1066 C)

Temper

572

Tensile Strength

122

Yield Strength

49

Elongation

59


Form

Plate

Condition

Heat treated at 1950 F(1066 C)

Temper

752

Tensile Strength

120

Yield Strength

47

Elongation

60


Form

Sheet

Condition

Heat treated 2100F (1149C) Hydrogen cool

Temper

70

Tensile Strength

133

Yield Strength

58

Elongation

55

Rockwell

B97


Form

Sheet

Condition

Heat treated at 1950 F(1066 C)

Temper

70

Tensile Strength

128

Yield Strength

60

Elongation

60

Rockwell

B95


Form

Sheet

Condition

Heat treated at 1950 F(1066 C)

Temper

392

Tensile Strength

125

Yield Strength

51

Elongation

58


Form

Sheet

Condition

Heat treated at 1950 F(1066 C)

Temper

572

Tensile Strength

121

Yield Strength

49

Elongation

59


Form

Sheet

Condition

Heat treated at 1950 F(1066 C)

Temper

752

Tensile Strength

118

Yield Strength

45

Elongation

60

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