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Standard

ASTM A451 Centrifugally Cast Austenitic Steel Pipe




ASTM A451 covers the standard for centrifugally cast austenitic alloy steel pipe for use in high-temperature, corrosive, or nuclear pressure service. The pipe shall receive a heat treatment at the required temperature and holding time followed by quenching in water or rapid cool by other means. The pipe shall be machined on the inner and outer surface and shall conform to specified roughness value.

Heat and product analysis shall be done to determine the chemical composition and shall conform to the required carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, columbium, tantalum, and nitrogen contents. Hydrostatic and tension tests shall be performed and shall conform to the required tensile strength, yield strength, and elongation.

This specification covers austenitic alloy steel pipe for use in high-temperature, corrosive, or nuclear pressure service. Several grades of austenitic stainless steel are covered as indicated in Table 1. Optional supplementary requirements are provided when additional testing may be required.

ASTM Standards

A297/A297M Specification for Steel Castings Iron-Chromium and Iron-Chromium-Nickel Heat Resistant f or General application
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A999/A999M Specification for General Requirements for Alloy and Stainless Steel Pipe

E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E94 Guide for Radiographic Examination
E165 Practice for Liquid Penetrant Examination for General Industry
E186 Reference Radiographs for Heavy-Walled (2 to 412-in. (50.8 to 114-mm)) Steel Castings
E280 Reference Radiographs for Heavy-Walled (412 to 12-in. (114 to 305-mm)) Steel Castings
E446 Reference Radiographs for Steel Castings Up to 2 in. (50.8 mm) in Thickness

ANSI Standard

B46.1 Surface Texture

Material Comparison Tables (ASTM KS, JIS, DIN, BS, NBN, NF, UNI)
ASTM
UNS NO.
KOREA/JAPAN

GERMAN

BRITISH
FRENCH
ITALIAN
KS
KS
/JIS
Re
DIN Type

DIN

Materiral

Number

Re

B.S

B.S Grade
Re
AF
NF
UNI Type

A 451

Centrifugally Cast Austenitic Steel Pipe for High Temperature Service

Grade CPF 8 J92600 (3) G-X6 CrNi 18 9 17445 1.4308 (3b) 4534 1 (3a)
Grade CPF 8C J92710 (3) G-X7 CrNiNb 18 9 17445 1.4552 (3b) (3)
Grade CPF 8M J92900 (3) G-X6 CrNiMo 18 9 17445 1.4408 (3b) 4534 3 (3a)
Grade CPF 20 J94202 (3) G-X15 CrNi 25 20 1.4840 WBL-595
(3b)
4534 7 (3a)

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