Nickel-Chrome Alloy Inconel 625 (UNS N06625)
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Inconel 625 prevents attack in alkalis, marine & fresh water and natural salts

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Inconel Alloy 625 - Heanjia Super Metals Co Ltd

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Inconel alloy 625 heanjia super metals co ltd

Nickel-Chrome Alloy Inconel 625 (UNS N06625)

Inconel Alloy 625 is a corrosion and oxidation resistant nickel alloy that is employed for its high

strength and good aqueous corrosion resistance properties. It prevents stress corrosion cracking due

to chloride ions. It is resistant to pitting and crevice corrosion. Nickel 625 is a preferably used

material in chemical processing, jet engines, aerospace and marine industry and nuclear power

plants.

Chemical Composition

Carbon (C)

0.10 %

Nickel (Ni)

Rem %

Chromium (Cr)

20 to 23 %

Iron (Fe)

5 %

Silicon (Si)

0.50 %

Manganese (Mn)

0.50 %

Sulfur (S)

0.015 %

Phosphorous (P)

0.015 %

Molybdenum (Mo)

8 to 10 %

Titanium (Ti)

0.40 %

Cobalt (Co)

1 %

Niobium + Tantalum 3.15 to 4.15 %

Aluminum (Al)

0.40 %

Physical Properties

Temperature

oC

23 oC

100 oC

200 oC

Electrical Resistivity

Micro-ohm-meter

1.26

1.27

1.28

oF

74 oF

212 oF

392 oF

Micro-ohm-inches

49.6

50

50.4

Heanjia Super-Metals Co., Ltd, Call- 12068907337. Web: www.super-metals.com


Inconel alloy 625 heanjia super metals co ltd

300 oC

400 oC

500 oC

600 oC

572 oF

1.30 oF

1.31 oF

1.32 oF

1.29

752

932

1112

50.8

51.2

51.6

52

Thermal Properties

Temperature

oC

23 oC

100 oC

200 oC

300 oC

400 oC

500 oC

600 oC

Thermal conductivity

W/M-°C

9.8

11.4

13.4

15.5

17.6

19.6

21.3

Thermal conductivity

Btu-in./ft².-hr.-°F

68

79

93

108

122

136

148

oF

74 oF

212 oF

392 oF

572 oF

752 oF

932 oF

1112 oF

Specific Heat Capacity

Temperature

oC

0 oC

100 oC

200 oC

300 oC

400 oC

500 oC

600 oC

J/kg-°C

Btu/lb-°F

oF

32 oF

212 oF

392 oF

572 oF

752 oF

932 oF

1112 oF

429

446

463

480

496

513

560

0.102

0.107

0.111

0.115

0.118

0.123

0.134

Mena Coefficient of Thermal Expansion

Temperatures

oC

20 oC -204 oC

20 oC -316 oC

20 oC -427 oC

20 oC -538 oC

20 oC -649 oC

20 oC -760 oC

20 oC -871 oC

20 oC -982 oC

x 10(-6)m/m-°C

microinches/in.-

oF

13.1 oF

13.5 oF

13.9 oF

14.4 oF

15.1 oF

15.7 oF

16.6 oF

17.3 oF

68-400

68-600

68-800

68-1000

68-1200

68-1400

68-1600

68-1800

7.3

7.5

7.7

8.0

8.4

8.7

9.2

9.6

Heanjia Super-Metals Co., Ltd, Call- 12068907337. Web: www.super-metals.com


Inconel alloy 625 heanjia super metals co ltd

Mean Dynamic Modulus of Elasticity

Alloy form

Processing

Temperature

Average dynamic modulus of

elasticity

psi

30.2 x 10(6) psi

29,2 x 10(6) psi

28.8 x 10(6) psi

27.7 x 10(6) psi

26.7 x 10(6) psi

25.6 x 10(6) psi

24.3 x 10(6) psi

22.8 x 10(6) psi

21.2 x 10(6) psi

18.7 x 10(6) psi

oF

RT

200 oF

400 oF

600 oF

800 oF

1000 oF

1200 oF

1400 oF

1600 oF

1800 oF

oC

RT

93 oC

242 oC

316 oC

427 oC

538 oC

649 oC

760 oC

871 oC

982 oC

Mpa

208,000 Mpa

201,000 Mpa

199,000 Mpa

191,000 Mpa

184,000 Mpa

176,000 Mpa

168,000 Mpa

157,000 Mpa

146,000 Mpa

129,000 Mpa

Inconel 625

plate

Annealed at

1925oF or

1052oC quickly

quenched

Corrosion Resistance

1.Creeping resistance

2.Oxidation resistance up to 1800oF

3.Resistance to seawater pitting and crevice corrosion

4.Prevents chloride ion stress corrosion cracking

Average corrosion rate in Phosphoric acid

Media

temperature

Test

time

days Mpy

42

days

Corrosion rate

oF

180 oF to

230 oF

oC

82 oC to

110 oC

Mm/a

0.04

Mm/a

28% wet process phosphoric acid (20% P2O5) 20-22%

sulfuric acid, about 1-1.5% fluorideas fluosilicic acid.

Aeration, moderate. Agitation,

55% wet process phosphoric acid (40% P2O5 equivalent

containing 3% sulfuric acid and suspended calcium sulfate

slurry. Aeration, none. Agitation, 50 ft/min (15 m/min)

99% wet process phosphoric acid (72% P2O5), 3.7% sulfuric

acid (3% SO3), 0.5% fluoride. Aeration, moderate. Agitation

Exhaust gases from evaporator, entrained phosphoric acid,

sulfuric acid vapor, sulfur trioxide, nitrous acid, silicon

tetrafluoride, water vapor; sprayed with water containing

0.1% phosphoric acid, 0.06% sulfuric acid, 0.1% combined

fluoride. Aeration, extensive. Agitation, constantly sprayed

with water

Gases containing hydrofluoric acid, silicon fluoride sulfur

dioxide with entrained phosphoric acid (72% P2O5), 3.7%

sulfuric acid (3% SO3). Aeration, broad, Agitation, fast-

moving gas stream

1.4

Mpy

230 oF to

234 oF

110 oC to

112 oC

112

days

59

Mpy

1.50

Mm/a

60 oF to

600 oF

50 oF to

355 oF

15 oC to

315 oC

10 oC to

180 oC

20.8

days

20.8

days

14.8

Mpy

12.9

Mpy

0.38

Mm/a

0.33

Mm/a

60 oF to

650 oF

15 oC to

343 oC

20.8

days

2.1

Mpy

0.05

Mm/a

Heanjia Super-Metals Co., Ltd, Call- 12068907337. Web: www.super-metals.com


Inconel alloy 625 heanjia super metals co ltd

Average Corrosion rate in salt containing conditions

Media

temperature

Exposure

time

Corrosion rate

Highest

pitting depth

Mill

1 Mill

40% calcium chloride, pH 2, 35% of

time; 40% zinc sulfate pH 1.8, 35% of

time; 3-30% aluminum sulfate, pH 3,

15% of time; 40% magnesium sulfate

pH 3, 10% of time; 40% zinc chloride,

pH 1.8 5% of time. Aeration,

moderate. Agitation, lightnin’ mixer.

Cuprous chloride, cuprous cyanide, p-

chlorophenol-N-methyl pyrolidone, p-

cyanophenol. Aeration, none.

Agitation, by boiling only.

5-20% cyanuric chloride in carbon

tetrachloride or toluene, 0.5%

chlorine, 0.3% cyanogen chloride,

hydrogen chloride and phosgene

Zinc chloride up to 71% (72° Be).

Aeration, none; under 28 in. (71 cm)

vacuum. Agitation.

51% magnesium chloride, 1% sodium

chloride, 1% potassium chloride, 2%

lithium chloride as concentrated from

natural Bonneville brines of 33%

solubles. Aeration, little. Agitation,

moderate.

Liquid phase

Vapor phase

oF

70 oF to

200 oF

oC

21 oC

to 93

oC

Mpy

0.1

Mpy

Mm/a

0.003

Mm/a

mm

0.03

mm

73 days

455 oF

235 oC

43 hours

0.5

Mpy

0.013

Mm/a

-

-

-

-

-

0.5

Mpy

0.013

Mm/a

1 Mill

0.03

mm

255 oF

107 oC

35 days

0.3

Mpy

0.008

Mm/a

3 Mill

0.00

8

mm

-

-

330 oF

to 335

oF

330 oF

to 355oF

165 oC

to 168

oC

165 to

180

100 h

with

brine

only, 20

h with

0.2%

fluosilicic

acid and

0.1% HF

2 Mpy

3 Mpy

0.05

Mm/a

0.08

Mm/a

-

-

-

53% magnesium chloride, 1% sodium

chloride, 1% potassium chloride, 2%

lithium chloride as concentrated from

natural Bonneville brines of 33%

solubles. Aeration, little. Agitation,

moderate to considerable.

Vapor phase above 53% magnesium

chloride with 8,000-10,000 ppm

hydrochloric acid in condensate.

Aeration, air-free after start-up.

335 oF

to 355

oF

168 oC

to 180

oC

200

hours

0.5

Mpy

0.013

Mm/a

-

335 oF

to 345

oF

168 oC

to 174

oC

200

hours

4 Mpy 0.10

-

-

Mm/a

Heanjia Super-Metals Co., Ltd, Call- 12068907337. Web: www.super-metals.com


Inconel alloy 625 heanjia super metals co ltd

Vapors over 50% magnesium chloride

with 500-4000 ppm hydrochloric acid

in condensate and 1000 ppm

magnesium chloride. Aeration,

moderate after start-up. Agitation.

50% magnesium chloride solution

plus 1% sodium chloride, 1%

potassium chloride, 2% lithium

chloride, concentrating natural

Bonneville brine from 33% soluables

to 50%. Aeration, little. Agitation,

moderate

310 oF

154 oC

45 hours

2 Mpy 0.05

Dispers

ed pits

Disp

erse

d

pits

Mm/a

310 oF

154 oC

45 hours

0.8

Mpy

0.020

Mm/a

Dispers

ed pits

Disp

erse

d

pits

Mechanical Properties

Impact Strength

Aging temperature, oF,

oC

Annealed

1200 oF, 649 oC

Aging period in hours Average charpy V notch impact strength

Ft. lbs

-

81 Ft. lbs

1000

11 Ft. lbs

4000

8 Ft. lbs

8000

5 Ft. lbs

16000

4 Ft. lbs

1000

5 Ft. lbs

4000

4 Ft. lbs

8000

5 Ft. lbs

16000

4 Ft. lbs

1000

12 Ft. lbs

4000

11 Ft. lbs

8000

15 Ft. lbs

16000

14 Ft. lbs

J

110 J

15 J

11 J

7 J

5 J

7 J

5 J

7 J

5 J

16 J

15 J

20 J

19 J

1400 oF, 760 oC

1600 oF, 871 oC

Hardness and tensile properties at Room temperature

Condition

Forms

Ultimate tensile

strength

Ksi

0.2 % offset Yield

strength

Ksi

Elongatio

n % in 2

inches

Hardne

ss,

rockwel

l

B94

Mpa

Mpa

Annealed at 1925oF or

1052oC, quickly quenched

Annealed at 1925oF or

1052oC, quickly quenched

Annealed at 1925oF or

1052oC, quickly quenched

sheet

132 Ksi

910 Mpa 67.9 Ksi 468 Mpa 47 %

sheet

131.5 Ksi 907 Mpa 67.4 Ksi 465 Mpa 45 %

B97

Plate

0.25 inch

0.5 inch

0.75 inch

132 Ksi

130 Ksi

132.3 Ksi

910 Mpa

896 Mpa

912 Mpa

65.5 Ksi

67 Ksi

80 Ksi

452 Mpa

462 Mpa

552 Mpa

46 %

44 %

44 %

B94

B98

B98

Heanjia Super-Metals Co., Ltd, Call- 12068907337. Web: www.super-metals.com


Inconel alloy 625 heanjia super metals co ltd

1 inch

1.5 inch

1.75 inch

127.2 Ksi

127.3 Ksi

128 Ksi

Available Forms

877 Mpa

878 Mpa

883 Mpa

75.3 Ksi

73.7 Ksi

66 Ksi

519 Mpa

508 Mpa

455 Mpa

42 %

43 %

44 %

B97

B97

C20

Wire, Wiremesh, Flanges, Tubing, Pipe, Strip, Plate, Foil, Sheet, Rod, Bar

Heanjia Super-Metals Co., Ltd, Call- 12068907337. Web: www.super-metals.com


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