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ASTM A441,A455 Steel for Boilers and Pressure Vessels

ASTM A441,A455 Steel for Boilers and Pressure Vessels

ASTM A441,A455 steel is a series of boilers and pressure vessel steel. Compare to their chemical composition and mechanical properties,they are all different. But we can see, ASTM A 455 owns higher class than A441.

ASTM A441,A455 chemical composition :


Grade

C (max)

Si (max)

Mn

P (max)

S (max)

Cu (min)

V(min)

A 441

0.22

0.3

0.85-1.25

0.04

0.05

0.2

0.02

A455

0.18

0.4

0.5-1.4

0.03

0.03

0.3

0.05

ASTM A441,A455  mechanical properties

Grade

Thickness (mm)

Tensile strength Rm for product thickness in mm

Upper yield stress ReH for product thickness in mm

Elongation after fracture
(Lo=5 do) % min

A 445

≤ 16

370-490

275

23

16-35

275

35-50

265

50-70

255

70-100

350-470

235

100-150

225

> 150

--

24

A 441

 

169

151

15

 

 

 

 

 

 

 

More information about ASTM A441,A455 Steel for Boilers and Pressure Vessels , you can contact me by mail (bb@bebonchina.com). Or call us directly(86-0371-86151827). Any need,please be free to contact us.

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