A204Gr.B Pressure Vessel Molybdenum Alloy Plates

A204Gr.B Pressure Vessel Molybdenum Alloy Plates

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A204Gr.B Pressure Vessel Molybdenum Alloy Plates

 

Specification of ASTM A204/A204M standard:

ASTM A204/A204M covers molybdenum alloy steel plates, intended particularly for welded boilers and other pressure vessels. ASTM A204/A204M are available in three grades having different strength levels: Grade A; Grade B; and Grade C.

 

Specification of ASTM A204 Gr.B steel plates:

ASTM A204 Gr.B is a kind of Mo-alloy steel material used to fabric high temperature pressure vessels.

Chemical Components of A204 Grade B steel (Max., %):

Items

C

Mn

P

S

Si

Mo

Heat Analysis

0.27

0.90

0.025

0.025

0.15-0.40

0.45-0.60

Product Analysis

0.98

0.13-0.45

0.41-0.64

Mechanical Properties of A204 Grade B steel (Min):

Item

Tensile Strength

kis (MPa)

Yield Strength

kis (MPa)

Elongation

kis (MPa)

Thickness

8 in (200mm)

70-90

(485-620)

40

(275)

≥17

2 in (50mm)

≥21

 

 

Delivery Condition of ASTM A204 Gr.B steel plates:

The A204Gr.B steel plates shall be killed.

ASTM A294Gr.B plates≤1-1 ⁄ 2in. [40mm] in the as-rolled, normalized, normalized and tempered, or stress relieved. ASTM A294Grade B plates>1-1 ⁄ 2in. [40mm] in normalized or normalized and tempered.

The steel plates ASTM A294Gr.B can be ordered at following Supplementary Technology such as

* HIC Test,

* NACE MR0175,

* Z15/Z25/Z35,

* S1/S2/S3/4.1/S5/S6/S7/S8/S9/S11/S12/S14/S17

--S3 Simulated Post-Weld Heat Treatment of Mechanical Test Coupons,

-- S5 Charpy V-Notch Impact Test,

--S8. Ultrasonic Examination in accordance with Specification A435/A435M,

--S11. Ultrasonic Examination in accordance with Specification A577/A577M,

--S12. Ultrasonic Examination in accordance with Specification A578/A578M

 

Application of ASTM A204Gr.B steel plates:

Widely Used In The Fabrication Of Boilers And Pressure Vessels,Such As Petroleum, Chemical,Gas Industry And Power Plants


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