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HASTELLOY G-30 COMPOSITION

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Super Alloy HASTELLOY(r) G30(r) alloy(tm)

Related Metals:

HASTELLOY(r) G30(r) alloy                                    

Specifications:

ASTM B366
ASTM B581
ASTM B582
ASTM B619
ASTM B622
DIN 2.4603
UNS N06030

Chemistry Data

Carbon

0.03 max

Chromium

28 - 31.5

Cobalt

5 max

Copper

1 - 2.4

Iron

13 - 17

Manganese

1.5 max

Molybdenum

4 - 6

Nickel

Balance

Niobium

0.3 - 1.5

Phosphorus

0.04 max

Silicon

0.8 max

Sulphur

0.02 max

Tungsten

1.5 - 4

General Information

Principal Design Features

A corrosion resistant alloy of nickel-chromium-molybdenum that is especially good for use in oxidizing acids.


Applications

Chemical process equipment involving pickling acids, phosphoric acid, nitric acid, and sulfuric acid as well as nitric/hydrofluoric acid. Commonly used in reheater tubes, pump components, agitator blades and reboilers in nuclear waste reprocessing. Also u


Machinability

Conventional machining techniques used for iron based alloys may be used. Machining characteristics are somewhat similar to those for the austenitic (300 Series) stainless steels. This alloy does work-harden during machining and has higher strength and "


Forming

May be formed by conventional means.


Corrosion Resistance

This alloy has excellent resistance to corrosion from phosphoric acid as well as resisting attack by oxidizing acids such as nitric/hydrofluoric, sulfuric, and nitric/hydrochloric. It resists pitting in an acidic chloride solution to a much higher temper


Welding

The commonly used welding methods work well with this alloy. Matching alloy filler metal should be used. If matching alloy is not available then the nearest alloy richer in the essential chemistry (Ni, Co, Cr, Mo) should be used. All weld beads should


Heat Treatment

The alloy may be annealed. Also it is important to solution-anneal after hot forming so as to restore corrosion resistance of the alloy.


Forging

No data. However the alloy has good ductility and thus is capable of being forged.


Cold Working

Cold forming may be done using standard tooling although plain carbon tool steels are not recommended for forming as they tend to produce galling. Soft die materials (bronze, zinc alloys, etc.) minimize galling and produce good finishes, but die life is


Annealing

Anneal at 2150 F followed by water quench or rapid air cooling.


Hardening

Hardens due to cold working only.


Physical Data

Density (lb / cu. in.)

0.297

Specific Gravity

8.22

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

0.109

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

698

Melting Point (Deg F)

2500

Thermal Conductivity

71

Mean Coeff Thermal Expansion

7.1

Modulus of Elasticity Tension

29.3

Mechanical Data

Form

Plate

Condition

Heat treated at 2150 F(1177 C)

Temper

70

Tensile Strength

102

Yield Strength

50

Elongation

53

Rockwell

B90


Form

Plate

Condition

Heat treated at 2150 F(1177 C)

Temper

200

Tensile Strength

95

Yield Strength

41

Elongation

53


Form

Plate

Condition

Heat treated at 2150 F(1177 C)

Temper

400

Tensile Strength

89

Yield Strength

36

Elongation

58


Form

Plate

Condition

Heat treated at 2150 F(1177 C)

Temper

600

Tensile Strength

83

Yield Strength

32

Elongation

59


Form

Plate

Condition

Heat treated at 2150 F(1177 C)

Temper

800

Tensile Strength

79

Yield Strength

30

Elongation

60


Form

Plate

Condition

Heat treated at 2150 F(1177 C)

Temper

1000

Tensile Strength

75

Yield Strength

29

Elongation

61

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