ASTM A333 Boiler Pipe

 

Material standard：
ASTM A333——Seamless and Welded Steel Pipe for Low-Temperature Service
Mainly Grade：
Grade 1, Grade 3, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10, Grade 11

 

 

 

 

 

 

 

 

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Specifications:

Strike temperature condition：

Crade	The lowest temperature for strike test
	℉	℃
Grade 1	-50	-45
Grade 3	-150	-100
Grade 4	-150	-100
Grade 6	-50	-45
Grade 7	-100	-75
Grade 8	-320	-195
Grade 9	-100	-75
Grade 10	-75	-60

 

 

 

Standard	Grade	Tensile Strength (MPa）	Yield Point (MPa)	Elongation (%)
				Y	X
ASTM A333	Grade 1	≥380	≥205	≥35	≥25
	Grade 3	≥450	≥240	≥30	≥20
	Grade 4	≥415	≥240	≥30	≥16.5
	Grade 6	≥415	≥240	≥30	≥16.5
	Grade 7	≥450	≥240	≥30	≥22
	Grade 8	≥690	≥515	≥22
	Grade 9	≥435	≥315	≥28
	Grade 10	≥550	≥450	≥22
	Grade 11	≥450	≥240	≥18

 

Standard

Grade

Chemical Composition (%)

C

Si

Mn

P

S

Cr

Ni

Cu

Mo

V

Al

ASTM A333

Grade 1

≤0.30

0.40～1.06

≤0.025

≤0.025

Grade 3

≤0.19

0.18～0.37

0.31～0.64

≤0.025

≤0.025

3.18～3.82

Grade 4

≤0.12

0.18～0.37

0.50～1.05

≤0.025

≤0.025

0.44～1.01

0.47～0.98

0.40～0.75

0.04～0.30

Grade 6

≤0.30

≥0.10

0.29～1.06

≤0.025

≤0.025

Grade 7

≤0.19

0.13～0.32

≤0.90

≤0.025

≤0.025

2.03～2.57

Grade 8

≤0.13

0.13～0.32

≤0.90

≤0.025

≤0.025

8.40～9.60

Grade 9

≤0.20

0.40～1.06

≤0.025

≤0.025

1.60～2.24

0.75～1.25

Grade 10

≤0.20

0.10～0.35

1.15～1.50

≤0.03

≤0.015

≤0.15

≤0.25

≤0.015

≤0.50

≤0.12

≤0.06

Grade 11

≤0.10

≤0.35

≤0.6

≤0.025

≤0.025

≤0.50

35.0～37.0

≤0.50

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