Product

20# Petroleum Cracking Tube






Implementation Standards


Seamless tubes for petroleum cracking (GB9948-2006) are seamless tubes for furnace tubes, heat exchangers and pipes suitable for petroleum refineries.



Applicable Scope

Seamless steel tubes for furnace tubes, heat exchanger tubes and pipes used in petroleum refineries and refineries.



Mechanical Property

Grade

Tensile Strength

(Mpa)

Yield Strength

MPa

Elongation Rate

portrait

%

Elongation Rate

transverse

%

Absorbed Work

portrait

KV2/J

Absorbed Work

transverse

KV2/J

Brinell Hardness

HB

10

410475

≥205

≥25

≥23

≥40

≥27


20

410550

≥245

≥24

≥22

≥40

≥27


15CrMo

440640

≥295

≥21

≥19

≥40

≥27

≤170HBW

12CrMo

410560

≥205

≥21

≥19

≥40

≥27

≤156HBW

12Cr2Mo

450600

≥280

≥22

≥20

≥40

≥27

≤163HBW


Chemical Composition

Name

Grade

Chemical Composition %

C

Si

Mn

Cr

Mo

Ni

V

Cu

P

S

不大于

Petroleum Cracking Tube

10

0.07~0.13

0.17~0.37

0.35~0.65

0.15

0.15

0.25

0.08

0.20

0.025

0.015

20

0.17~0.23

0.17~0.37

0.35~0.65

0.25

0.15

0.25

0.08

0.20

0.025

0.015

12CrMo

0.08~0.15

0.17~0.37

0.40~0.70

0.40~0.70

0.40~0.55

0.30

/

0.20

0.025

0.015

15CrMo

0.12~0.18

0.17~0.37

0.40~0.70

0.80~1.10

0.40~0.55

0.30

/

0.20

0.025

0.015


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