Telephone

(281) 855-8080

Fax

(281) 855-8085

Postal Address

14900 FM 529

Ste 104

Houston, TX 77095

 

 

Corrosion protection has always been one of the major concerns of engineers worldwide. Many factors such as temperature, pressure, velocity and concentration of the media complicate the matters even further. This has forced engineers to start looking and applying more corrosion resistant metals.

At SPF Corporation of America, we pride ourselves in being able to manufacture some of the most demanding super metals in the world. Metals such as zirconium, niobium, tantalum, and platinum. Many of our manufacturing procedures are unique and developed in house through thorough testing and research. Our experience in these super metals is unsurpassed and is truly one of a kind.

We manufacture our products using copper and copper alloys, stainless steels, super stainless steels, nickel and nickel alloys, high nickel alloys, titanium, zirconium, niobium, tantalum, and platinum.

Titanium

Titanium has become ever popular over the last years due to it's excellent strength, light weight, and high corrosion resistance. It has found it's way into applications in the aerospace industry, and almost every type of chemical industry. Titanium has superior corrosion resistance against media such as alkalis, sea water, wet chlorine and chlorides, organic chemicals, nitric acid, oxidizing acids, and non-reduction environments.

Zirconium

Zirconium is very popular in the nuclear industry. It is often used for nuclear reactors, due to it's excellent corrosion resistance and low neutron absorption. Zirconium corrosion resistance is superior to all but a few metals and has become a standard in highly corrosive environments such as hydrochloric acid, sulfuric acid and nitric acid.

Niobium (Columbium)

Niobium is another metal that has exceptional corrosion resistance. It's resistance is quite similar to that of tantalum. It is relatively stable against hydrochloric acid, sulfuric acid, phosphoric acid and other reducing agents at room temperature, however it deteriorates it properties. Close attention is necessary since it's hydrogen embrittlement resistance and heat resistance are slightly inferior to that of tantalum. Due to the fact that it's density is almost half of that of tantalum, it is used exceptionally in sever corrosive media such as concentrated etching solutions and plating solutions.

Tantalum

Tantalum has second to none corrosion resistance. It's ductility is superior as well and has very good electrical properties. It is favorably used by the chemical industry, electronic industry, and high temperature heat-resistant equipment. As of late it's unique properties have made it's way into military applications as well. Tantalum is far superior to titanium, zirconium and niobium which in themselves are already considered as very corrosion resistant metals. This is to give an indication of how corrosion resistant tantalum truly is. It is exceptionally resistant to nearly every acid except for a few acids such as hydrofluoric acid and heavy alkaline solutions. It has become very popular in hydrochloric and sulfuric acid condensers, surface treatment equipment and electro-plating equipment.

Platinum

Platinum has become indispensable for the modern electronic world. It has been applied in many electronic systems as well as in the aerospace technology. It has also been used as the crown of electrodes for many years. Platinum electrodes manufactured by SPF Corporation have been used as electrodes in chemical plants, general plating plants, and in the electro-plating process of the steel industry for many years.

Physical Properties

Ti

Ta

Nb (Cb)

Zr (702)

SS 316

C-276

Fe

Atomic Number

22

73

41

40

-

-

26

Atomic Weight

47.90

180.95

92.91

91.22

-

-

55.85

Density (g/cm3; @20 BC)

4.51

16.6

8.57

6.49

7.98

8.89

7.86

Melting Point (BC)

1668

2996

2468

1845

1370~1400

1323~1371

1530

Specific Heat (cal/g/BC)

0.130

0.034

0.065

0.070

0.120

0.102

0.110

Thermal Conductivity (cal/cm2/sec/BC/cm)

0.041

0.130

0.130

0.040

0.039

0.030

0.150

Electrical Resistivity (mW-cm ; @20 BC)

47~55

12.4

14.6

39.7

74

130

9.7

Thermal Expansion (x 10-6)

8.4

6.5

7.1

5.8

16.0

16.0

12.0

Young's Modulus (x 103kg/mm2)

10.85

18.90

10.50

9.11

19.70

20.90

19.60

Poisson's Ratio

0.34

0.35

0.38

0.35

0.3

0.28

0.31

Mechanical Properties

Tensile Strength (kgf/mm2)

Yield Strength 0.2% (kgf/mm2)

Elongation (%)

Hardness R.T. (HB)

Reduction of Area (%)

Bend (180B

)

Titanium Grade 1 (ASTM Gr1)

28~42

/

17

/

27

/

100

/

40

>2t

Titanium Grade 2 (ASTM Gr2)

35~52

/

22

/

25

/

110

/

40

>2t

Titanium/Pd Alloy (ASTM Gr7)

35~52

/

22

/

25

/

110

/

40

>2t

Titanium Alloy  (ASTM Gr12)

/

49.2

/

35.2

/

18

190~200

-

>5t

Tantalum

>25

>20

45

90

90

>2t

Niobium

>25

>20

35

75

90

>2t

Zirconium (ASTM R60702)

35~50

20~40

20~35

120~200

30~60

>5t

C-276 (ASTM B575)

83

42

50

90 (H R B)

-

-

316 Stainless Steel

/

53

/

21

/

40

[

187

/

60

>1t

Corrosion Data

 

A: Completely Corrosion Resistant
B: Usable Corrosion Resistance
C: Unsatisfactory

RT: Room Temperature
BP: Boiling Temperature

 

Group

Classification

Conc. %

Temp.

Inorganic acids

Hydrochloric acid

5

RT

A

A

A

C

B

A

BP

A

C

A

C

C

A

10

RT

A

B

A

C

B

A

BP

A

C

A

C

C

C

20

RT

A

C

A

C

B

A

BP

A

C

A

C

C

C

35

RT

A

C

A

C

B

A

BP

A

C

A

C

C

C

Sulfuric acid

5

RT

A

A

A

C

C

C

BP

A

C

A

C

B

A

10

RT

A

B

A

C

A

A

BP

A

C

A

C

C

C

60

RT

A

B

A

C

A

A

BP

A

C

A

C

C

C

80

RT

A

C

C

C

A

 

BP

B

C

C

C

C

 

95

RT

A

C

C

C

A

 

BP

C

C

C

C

C

 

Nitric acid

10

RT

A

A

A

A

B

A

BP

A

A

A

A

B

A

30

RT

A

A

A

A

B

A

BP

A

A

A

A

C

A

68

RT

A

A

A

A

A

A

BP

A

A

A

B

C

A

Fuming

RT

A

A

A

 

 

A

Phosphoric acid

30

RT

A

A

A

A

A

A

BP

A

C

B

B

B

C

50

RT

A

B

B

A

A

A

BP

A

C

C

B

B

C

70

RT

A

B

B

A

A

A

BP

A

C

C

C

B

C

85

RT

A

B

B

A

A

A

BP

A

C

C

C

C

C

35% HCl + 0.5% HNO3

 

RT

A

C

A

 

 

 

90%H2SO4 + 10%HNO3

 

RT

A

C

C

 

 

 

70%H2SO4+ 30%HNO3

 

RT

A

B

 

 

 

 

50%H2SO4+ 50%HNO3

 

RT

A

B

 

 

 

 

Chromic acid

30

RT

A

A

A

C

C

A

BP

A

A

A

C

A

Aqua regia

 

RT

A

A

C

C

A

A

BP

A

C

C

C

C

C

Organic acids

Hydrofluoric acid

5

RT

C

C

C

C

C

C

48

RT

C

C

C

C

C

C

Acetic acid

100

RT

A

A

A

A

A

A

BP

A

A

A

A

A

A

Formic acid

50

RT

A

A

A

C

A

A

BP

A

C

A

C

A

A

Oxalic acid

10

RT

A

B

A

B

A

C

BP

A

C

A

C

B

Citric acid

50

RT

A

A

A

A

A

A

BP

A

C

A

C

B

C

Alkalis

Caustic soda

20

RT

C

A

A

A

B

 

BP

C

A

A

A

B

40

RT

C

A

A

A

 

 

BP

C

A

A

A

 

Caustic potash

50

RT

C

C

A

A

B

 

BP

Chlorides

Ferric chloride

30

RT

A

A

C

C

B

A

BP

A

A

C

C

C

A

Sodium chloride

20BC

RT

A

A

A

B

A

 

BP

A

A

A

B

Ammonium chloride

25

RT

A

A

A

B

B

A

BP

A

A

A

 

A

Calcium chloride

25

RT

A

A

A

B

 

A

BP

A

A

A

A

A

Magnesium chloride

42

RT

A

A

A

A

A

 

BP

A

A

A

A

A

Sulfates

Ammonium sulfate

20 BC

RT

A

A

A

A

A

 

BP

A

A

A

B

Caustic sulfide

10

RT

A

A

A

 

A

 

BP

A

A

A

A

Caustic sulfate

50

RT

A

A

A

 

B

 

BP

A

A

A

Nitrates

Ammonium nitrate

10

RT

A

A

A

A

A

 

BP

A

A

A

A

A

Potassium nitrate

all

RT

A

A

A

 

B

 

BP

A

A

A

Corrosive gases

Chlorine gas

wet

RT

A

A

C

C

 

A

Chlorine water

gas

RT

A

A

C

C

B

A

Sulfurous gas

wet

RT

A

A

A

A

 

A

BP

Hydrogen sulfide

wet

RT

A

A

A

A

 

A

 

 

 

 

 

 

 

 

SPF Corporation of America:

Telephone

(281) 855-8080

Fax

(281) 855-8085

Postal Address

14900 FM 529

Ste 104

Houston, TX 77095, U.S.A.

eMail

contact@spfusa.com

Web Address

www.spfusa.com

 

 

SPF Europe BV:

Telephone

31 455 23-1474

Fax

31 455 23-0470

Postal Address

De Koumen 30, 6433 KD Hoensbroek, The Netherlands

eMail

Web Address

 

 

SPF Company LTD.:

Telephone

81 52 871-4121

Fax

81 52 872-1397

Postal Address

5-1, Horita Doori, Mizuho-Ku, Nagoya, 467-0862, Japan

eMail

Web Address