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High temperature alloy seamless steel tubes pipes 8MoB5-4
Source:Xin Steel Industry   Date:2018/09/03

 

High temperature alloy seamless steel tubes pipes 8MoB5-4


Relative steel grades:20MnNb6,16Mo3,8MoB5-4,14MoV6-3,10CrMo5-5,13CrMo4-5,10CrMo9-10,
11CrMo9-10,25CrMo4,20CrMoV13-5-5,15NiCuMoNb5-6-4,7CrWVMoNb9-6,7CrMoVTiB10-10.


Main application:Non-alloy and alloy high temperature seamless steel pipes more used for building boilers and pressure vessels’parts.8MoB5-4 alloy seamless steel pipes have to be done Normalized heat treatment at temperature 920-960℃.


Rolling range:A) Diameter:1/2’’ to 36’’  B) Schedule:SCH20-SCHXXS  C) O.D.:13.7MM-914.4MM  D) Wall Thickness: 2.11MM-60MM  E) Length: Max.17MM


Test: Low temperature impacting test,Ultrasonic examination,Heat treatment,Bending test,Eddy test,Hydrostatic test,High tension test.


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►Mechnical property for 8MoB5-4 pressure vessel steel pipes:

 

Yield strength (≥Mpa)

Tensile strength (≥Mpa)

Elongation A min. %

  T≤16

16<T≤40

40<T≤60

60<T≤100

 

Longitudinal

Transverse

400

-

-

-

540-690

22

20

 

►Chemical composition for 8MoB5-4 steel tubes (Cast Analysis Max%)

 

Main chemical elements composition of 8MoB5-4

C

Si

Mn

P

S

Cr

V

0.06-0.10

0.10-

0.35

0.60-0.80

0.025

0.010

0.20

-

Mo

Ni

Al total

Cu

Nb

Ti

B

0.40-0.50

-

0.060

0.30

-

0.060

0.002-0.006

 

XINSTEEL INDUSTRIAL CO.,LTD offering high quality of seamless steel pipes 8MoB5-4 from chinese national owned steel mills TPCO,BAOSTEEL,etc.,and owned many different diameters stock pipes for sale anytime.