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A203 Grade B steel plate

A203 Grade B steel plate

ASTM A203 Grade B is a kind of Ni-alloy steel material used to fabric high temperature pressure vessels. ASTM A203 Grade B this property is based on it's Ni composition.A203 Grade B is used in fabricators serving industry, especially in the oil, gas and chemical supply markets. ASTM A203 has five grades or levels-- Grade A/B/D/E/F.

Standard: ASTM A-203/A-203M
Dimension range : 1.5mm -260mm * 1000mm-4000mm * 1000mm-18000mm

A203 Grade B steel plate Mechanical Properties

Mechanical Properties

Grade

Thickness

Yield
Strength

Tensile Strength

Elongation

Charpy V Notch Impact Test

Degree

Min Value

A203Gr.B

mm

Min Mpa

Mpa

Min %

-

J

5≤t≤50

275

485-620

21%

-

50≤t≤200

275

485-620

17%

 

 

Note: Impact energy for impact test is on longitudinal

A203 Grade B Boiler steel plate Chemical Composition

Chemical Composition

Grade

The Element Max (%)

C

Si

Mn

P

S

Ni

N

A203Gr.B

0.21-0.25

0.13-0.45

0.78-0.88

0.035

0.035

2.03-2.57

 

Delivery Status : Normalizing + tempering or tempering state

A203 Grade B pressure vessel steel application :
A203 Grade B steel is widely used in petroleum, chemical, power station, boiler and other industries, for the manufacture of reactor, heat exchanger, separator, spherical tank, paint tank, Oil gas cylinders, high-pressure water pipe hydropower stations, water turbines and other equipment and components.

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