ASTM A426/A426M-13 PDF

1.1 This specification2 covers centrifugally cast alloy steel pipe intended for use in high-temperature, high-pressure service.

1.2 Several grades of ferritic steels are covered. Their compositions are given in Table 1.

TABLE 1 Chemical RequirementsA

Composition, %

Grade

UNS Number

Carbon

Manganese

Phos-
phorus, max

Sulfur, max

Silicon

Chromium

Molybdenum

CP1

J12521

0.25 max

0.30-0.80

0.030

0.025

0.10-0.50

...

0.44-0.65

CP2

J11547

0.10-0.20

0.30-0.61

0.030

0.025

0.10-0.50

0.50-0.81

0.44-0.65

CP5

J42045

0.20 max

0.30-0.70

0.030

0.025

0.75 max

4.00-6.50

0.45-0.65

CP5b

J51545

0.15 max

0.30-0.60

0.030

0.025

1.00-2.00

4.00-6.00

0.45-0.65

CP9

J82090

0.20 max

0.30-0.65

0.030

0.025

0.25-1.00

8.00-10.00

0.90-1.20

CP11

J12072

0.05-0.20

0.30-0.80

0.030

0.025

0.60 max

1.00-1.50

0.44-0.65

CP12

J11562

0.05-0.15

0.30-0.61

0.030

0.025

0.50 max

0.80-1.25

0.44-0.65

CP15

J11522

0.15 max

0.30-0.60

0.030

0.025

1.15-1.65

...

0.44-0.65

CP21

J31545

0.05-0.15

0.30-0.60

0.030

0.025

0.50 max

2.65-3.35

0.80-1.06

CP22

J21890

0.05-0.15

0.30-0.70

0.030

0.025

0.60 max

2.00-2.75

0.90-1.20

CPCA15

J91150

0.15 max

1.00 max

0.030

0.025

1.50 max

11.5-14.0

0.50 max

A Where ellipses appear in this table, there is no requirement.

1.3  Supplementary Requirements S1 through S12 are provided. The supplementary requirements provide for additional tests of an optional nature and when desired shall be so stated in the order (Section 4).

1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.4.1 Within the text, the SI units are shown in brackets.

1.5 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.

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Published :	11/01/2013
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