Значение и использование

4.1 These test methods for the chemical analysis of metals and alloys are primarily intended as referee methods to test such materials for compliance with compositional specifications, particularly those under the jurisdiction of ASTM Committee B02 on Nonferrous Metals and Alloys. It is assumed that all who use these test methods will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory under appropriate quality control practices such as those described in Guide E882.

Область применения

1.1 These test methods describe the chemical analysis of nickel, cobalt and high-temperature alloys having chemical compositions within the following limits:

 

Element

Composition Range, %

 

 

Aluminum

 

0.005

to

7.00

 

 

 

Beryllium

 

0.001

to

0.05

 

 

 

Boron

 

0.001

to

1.00

 

 

 

Calcium

 

0.002

to

0.05

 

 

 

Carbon

 

0.001

to

1.10

 

 

 

Chromium

 

0.10

to

33.00

 

 

 

Cobalt

 

0.10

to

75.00

 

 

 

Copper

 

0.01

to

35.00

 

 

 

Iron

 

0.01

to

50.00

 

 

 

Lead

 

0.001

to

0.01

 

 

 

Magnesium

 

0.001

to

0.05

 

 

 

Manganese

 

0.01

to

3.0

 

 

 

Molybdenum

 

0.01

to

30.0

 

 

 

Niobium (Columbium)

 

0.01

to

6.0 

 

 

 

Nickel

 

0.10

to

98.0

 

 

 

Nitrogen

 

0.001

to

0.20

 

 

 

Phosphorus

 

0.002

to

0.08

 

 

 

Sulfur

 

0.002

to

0.10

 

 

 

Silicon

 

0.01

to

5.00

 

 

 

Tantalum

 

0.005

to

1.00

 

 

 

Tin

 

0.002

to

0.10

 

 

 

Titanium

 

0.01

to

5.00

 

 

 

Tungsten

 

0.01

to

18.00

 

 

 

Vanadium

 

0.01

to

3.25

 

 

 

Zinc

 

0.001

to

0.01

 

 

 

Zirconium

 

0.01

to

2.50

 

 

1.2 The test methods in this standard are contained in the sections indicated as follows:

Aluminum, Total by the 8-Quinolinol Gravimetric Method
 (0.20 % to 7.00 %)

53 to 60

Chromium by the Atomic Absorption Method
 (0.018 % to 1.00 %)

91 to 100

Chromium by the Peroxydisulfate Oxidation—Titration Method
 (0.10 % to 33.00 %)

101 to 109

Cobalt by the Ion-Exchange-Potentiometric Titration Method
 (2 % to 75 %)

25 to 32

Cobalt by the Nitroso-R-Salt Spectrophotometric Method
 (0.10 % to 5.0 %)

33 to 42

Copper by Neocuproine Spectrophotometric Method
 (0.010 % to 10.00 %)

43 to 52

Iron by the Silver Reduction Titrimetric Method
 (1.0 % to 50.0 %)

118 to 125

Manganese by the Metaperiodate Spectrophotometric Method
 (0.05 % to 2.00 %)

8 to 17

Molybdenum by the Ion Exchange—8-Hydroxyquinoline
  Gravimetric Method (1.5 % to 30 %)

110 to 117

Molybdenum by the Spectrophotometric Method
 (0.01 % to 1.50 %)

79 to 90

Nickel by the Dimethylglyoxime Gravimetric Method
 (0.1 % to 84.0 %)

61 to 68

Niobium by the Ion Exchange—Cupferron Gravimetric Method
 (0.5 % to 6.0 %)

126 to 133

Silicon by the Gravimetric Method (0.05 % to 5.00 %)

18 to 24

Tantalum by the Ion Exchange—Pyrogallol Spectrophotometric
 Method (0.03 % to 1.0 %)

134 to 142

Tin by the Solvent Extraction-Atomic Absorption Method
 (0.002 % to 0.10 %)

69 to 78

1.3 Other test methods applicable to the analysis of nickel alloys that may be used in lieu of or in addition to this method are Test Methods E1019, E1834, E1835, E1917, E1938, E2465, E2594, E2823.

1.4 Some of the composition ranges given in 1.1 are too broad to be covered by a single method, and therefore, these test methods contain multiple methods for some elements. The user must select the proper test method by matching the information given in the scope and interference sections of each test method with the composition of the alloy to be analyzed.

1.5 The values stated in SI units are to be regarded as standard.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 7 and in 13.4, 15.1.1, 15.1.2, 21.2, 22.5, 57.3, 114.5, 115.4, 130.4, 130.5, 138.5, and 138.6.