Ada yang tahu material A426-2B? equivalent-nya apa? Atau komposisi materialnya?

Tanya – Lina

Rekan-rekan Anggota Milis Migas Yth.,

i>Ada yang tahu material A426-2B? equivalent-nya apa? Atau komposisi materialnya?

Terima kasih.

Tangggapan 1 – Andarini (Jakarta)

Jika mbak punya standar ASTM Material, shrsnya ada penjelasannya semua disitu.

Dilibrary saya yg ada cuma ASME II Part A Ferrous Material Specification, u/ SA 426 CENTRIFUGALLY CAST FERRITIC ALLOY STEEL PIPE FOR HIGH TEMPERATURE SERVICE, (setara dgn ASTM A 426-97). (ini attachmentnya)

Data chemical comp. [%]Carbon, Manganese, Phosphorus (max), Sulfur(max), Silicon, Chromium, Molybdenum (table 1) disusun berdasarkan Grade-nya (dinyatakan dlm CP1, CP2 dst).

Masalahnya disini tinggal mencari Grade 2B itu setara dengan Grade CP berapa.

(Apa yg grade 2B ngga salah tulis ya?)

Tangggapan 2 – Zulkifli Taher

Designation: A 426/A 426M – 08
Standard Specification for Centrifugally Cast Ferritic Alloy Steel Pipe for High- Temperature Service1

Saya punya standard seperti tertulis diatas, total hanya 5 halaman.
Pada standar tersebut tidak dijumpai Grade 2B. Semua grade dimulai dengan CP…

Sebetulnya yang dibutuhkan apanya sih?

Tangggapan 3 – Autumn Batara

Dear Lina,

Di ASTM ferrous metal standard yang ada adalah ASTM A426/A 426M-02 : Standard specification for Centrifugally Cast ferritic Alloy steel pipe for High Temperature service. (bukan A426-2B).

Informasi tambahan dari http://www.e-pipe.co.kr/ASTM/A426.htm

ASTM A426/ASME SA426 STANDARD SPECIFICATION FOR CENTRIFUGALLY CAST FERRITIC
ALLOY STEEL PIPE FOR HIGH TEMPERATURE SERVICE1
(ASTM A 426 / ASME SA 426 /ASTMA426/ASMESA426)

1. Scope

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

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

1.3 supplimentary requirements provide shall be so stated in the order (Section
$).

1.4 The values stated in inch-pound units are to be regarded as the standard.

Table1 Chemical Requirements

Composition, %

Grade Carbon Manganese Phos-pho-rus.max sulfur, max Silicon Chromium Molybdenum

CP1 0.25max 0.30~0.80 0.040 0.045 0.10~0.50 … 0.44~0.65

CP2 0.10~0.20 0.30~0.61 0.040 0.045 0.10~0.50 0.50~0.81 0.44~0.65

CP5 0.20max 0.30~0.70 0.040 0.045 0.75max 4.00~6.50 0.45~0.65

CP5b 0.15max 0.30~0.60 0.040 0.045 1.00~2.00 4.00~6.00 0.45~0.65

CP9 0.20max 0.30~0.65 0.040 0.045 0.25~1.00 8.00~10.00 0.90~1.20

CP11 0.05~0.20 0.30~0.80 0.040 0.045 0.60max 1.00~1.50 0.44~0.65

CP12 0.05~0.15 0.30~0.61 0.040 0.045 0.50max 0.80~1.25 0.44~0.65

CP15 0.15max 0.30~0.60 0.040 0.045 0.15~1.65 … 0.44~0.65

CP21 0.05~0.15 0.30~0.60 0.040 0.045 0.50max 2.65~3.35 0.80~1.06

CP22 0.05~0.15 0.30~0.70 0.040 0.045 0.60max 2.00~2.75 0.90~1.20

CPCA15 0.15max 1.00max 0.040 0.045 1.50max 11.5~14.0 0.50max

Table2 Tensile Properties and Hardness Requirements

Tensile strength, min, psi(MPa)

Grade CP1 65000(450)

Grades CP11, CP22 70000(485)

Grades CP5, CP9, CPCA15 90000(620)

All other grades 60000(415)

Yield strngth min, psi(MPa)

Grade CP1 35000(240)

Grades CP11, CP22 40000(275)

Grades CP5, CP9 60000(415)

Grade CPCA15 65000(450)

All other grades 30000(205)

Elongation, min, %:A

Grade CP1 24

Grades CP5, CP9, CPCA15 20

All other grades 18

Reduction of area, min, %:

Grades CP1, CP2, CP11, CP12, CP15 22

CP21, CP22,CP5,CP5b, CP7, Cp9 35

Grade CPCA 15 30

Hardness, max, HB:

Grades CP5, CP5b, CP9, CPCA15 225

All other grades 201

AElongation in 2 in. (50mm) using a standard round specimen, in either the
transverse or longitudinal direction.

Table3 Residual Elements

Grade Copper, max Nickel, max Chromium, max Tungsten, max Total Contens of These
Unspecifed Elements,max, %

CP1 0.50 0.50 0.35 0.10 1.00

CP2 0.50 0.50 … 0.10 1.00

CP5 0.50 0.50 … 0.10 1.00

CP5b 0.50 0.50 … 0.10 1.00

CP7 0.50 0.50 … 0.10 1.00

CP9 0.50 0.50 … 0.10 1.00

CP11 0.50 0.50 … 0.10 1.00

CP12 0.50 0.50 … 0.10 1.00

CP15 0.50 0.50 0.35 0.10 1.00

CP21 0.50 0.50 … 0.10 1.00

CP22 0.50 0.50 … 0.10 1.00

CPCA15 0.50 1.00 … 0.10 1.50 Material Comparison Tables (ASTM ¡æKS, JIS, DIN,
BS, NBN, NF, UNI)

ASTMSTANDARD UNS NO. KOREA/JAPANES GERMAN BRITISH BELGIAN FRENCH ITALIAN

KS/JIS Symbol KS/JIS Numbe Remarks DIN Type DIN

Number Materiral

Number Remarks B.S

Number B.S Grade Remarks NBN Type NBN Grade Remarks AFNOR Type NF Number Ramarks

UNI Type UNI Number Ramarks

A 426

Centrifugally Cast Ferritic Alloy Steel Pipe for High-Temperature Service

CP 1 J12501 SCPH-11CF / SCPH-11CF D4112 / G5202 (3) (3) (3)

CP 12 J11562 SCPH-21CF / SCPH-21CF D4112 / G5202 GS-17 CrMo 55 17245 1.7357
(3b) (3) (3)

CP 22 J21890 SCPH-32CF / SCPH-32CF D4112 / G5202 GS-18 CrMo 9 10 1.7379 (3a)
(3) (3)

Untuk ASME Boiler and Pressure Vessel Code applications silahkan merefer ke ASME
BPVC section 2 Part A (Untuk ASME BPVC 2004, ada di halaman 805).

Historical Standards for A426: dari www.astm.org

Document Designation and Title Year

A426/A426M Standard Specification for Centrifugally Cast Ferritic Alloy Steel

Pipe for High-Temperature Service 05

A426/A426M Standard Specification for Centrifugally Cast Ferritic Alloy Steel

Pipe for High-Temperature Service 02

A426 Standard Specification for Centrifugally Cast Ferritic Alloy Steel Pipe for
High-Temperature Service 92(2002)

A426 Standard Specification for Centrifugally Cast Ferritic Alloy Steel Pipe for
High-Temperature Service 92(1997)