GB3531 16MnDR pressure vessel steel plate for low temperature service

Pressure vessel steel plate covers a range of steel grades that are designed for use in pressure vessel, boilers, heat exchangers and any other vessel that contains a gas or liquid at high pressures.

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GB3531 16MnDR pressure vessel steel plate for low temperature service

GB3531 16MnDR pressure vessel steel plate for low temperature service

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GB3531 16MnDR pressure vessel steel plate is suitable for manufacturing -196℃ to - 20℃ low temperature pressure vessels. The grade of 16MnDR steel is indicated by average carbon content, alloy element letters and the first letter of Chinese phonetic alphabet "Di" and "Rong", which means “low” and “vessel” respectively. The size, shape and tolerance of 16MnDR pressure vessel steel plate shall comply with the provisions of GBT 709. 16MnDR steel density is 7.85g/cm3. And the thickness range of 16MnDR steel plate is 5mm - 120mm.

GB3531 16MnDR pressure vessel steel plate chemical composition (max.):


C

Si

Mn

Ni

Mo

V

Nb

P

S

Alt (min.)

0.20 

0.15-0.50

1.20-1.60

0.40 

-

-

-

0.020

0.010

0.020

Notes: 1) In order to improve the properties of 16MnDR pressure vessel steel plate, Nb, V, Ti and other elements can be added to 16MnDR steel. Nb + V + Ti ≤ 0.12%. The elements content should be indicated in the quality certificate.

  1. As residual elements, the content of Cr and Cu should be no more than 0.25% respectively, Ni should be no more than 0.40%, and Mo should be no more than 0.08%. It can also not be analyzed if the supplier can guarantee the quality.  
  2. Alt can be replaced by the determination of Als, at this time, the content of Als should not be less than 0.015%; when Nb + V + Ti ≥ 0.015%, the Al content is not required for acceptance.

GB3531 16MnDR pressure vessel steel plate mechanical property: 


Grade

Thickness
/mm

Yield Rm/
Mpa(N/mm2)

Tensile ReL/
Mpa(N/mm2)

Elongation 
A/%

Impact test /°C

Impact strength 
KV2/J

 

 

 

Not less than

 

Not less than

16MnDR

6-16

490-620

315 

21 

-40 

47 

>16-36

470-600

295 

21 

-40 

47 

>36-60

460-590

285 

21 

-40 

47 

>60-100

450-580

275 

21 

-30 

47 

>100-120

440-570

265 

21 

-30 

47 

The delivery state of 16MnDR pressure vessel steel plate is usually normalized or normalized and tempered. The 16MnDR pressure vessel steel plate supplier shall carry out ultrasonic testing one by one for 16MnDR steel plates with a thickness greater than 20mm. Ultrasonic testing can be carried out for other thick 16MnDR steel plates one by one after negotiation between the supplier and the demander.

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