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Q345A 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

410～475

≥205

≥25

≥23

≥40

≥27

20

410～550

≥245

≥24

≥22

≥40

≥27

15CrMo

440～640

≥295

≥21

≥19

≥40

≥27

≤170HBW

12CrMo

410～560

≥205

≥21

≥19

≥40

≥27

≤156HBW

12Cr2Mo

450～600

≥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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Product Display: Round Bar; Seamless Pipe; Rectangular Pipe

Equipment: High Quality Bar; High end medium Thick Wall Seamless Steel Pipe

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Contact Us: ADD：Wuxi Liang Xi District Jinshan North Industrial Park
TEL：+86-0510-8307-4477
FAX：+86-0510-8307-4488
E-mail：kikoquan@mingshangsteel.com

Add：Wuxi Liang Xi District Jinshan North Industrial Park Tel：+86-0510-8307-4477 Fax：+86-0510-8307-4488

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	410～475	≥205	≥25	≥23	≥40	≥27
20	410～550	≥245	≥24	≥22	≥40	≥27
15CrMo	440～640	≥295	≥21	≥19	≥40	≥27	≤170HBW
12CrMo	410～560	≥205	≥21	≥19	≥40	≥27	≤156HBW
12Cr2Mo	450～600	≥280	≥22	≥20	≥40	≥27	≤163HBW

Name	Grade	Chemical Composition %
		C	Si	Mn	Cr	Mo	Ni	V	Cu	P	S
		C	Si	Mn	Cr	Mo	Ni	V	Cu	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