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ASTM A335/A335M pipe Suppliers,Manufacturers in china
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ASTM A335/A335M

Date:2022-03-31View:482Tags:seamless pipe, carbon pipe,stainless pipe,octg pipe manufacturers

ASTM A335/A335M--Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

ASTM A335 / A335M Grades

Grades

UNS Designation

P1

K11522

P2

K11547

P5

K41545

P5b

K51545

P5c

K41245

P9

S50400

P11

K11597

P12

K11562

P15

K11578

P21

K31545

P22

K21590

P23

K41650

P24

K30736

P36

K21001

P91

K91560

Chemical Composition

Chemical Components (%)

Grade

C

Mn

P

S

Si

Cr

Mo

V

Nb

N

Al

others

P11

0.05-0.15

0.30-0.60

≤0.025

≤0.025

0.50-1.00

1.0-1.50

0.44-0.65

/

/

/

/

/

P12

0.05-0.15

0.30-0.61

≤0.025

≤0.025

≤0.50

0.80-1.25

0.45-0.65

/

/

/

/

/

P22

0.05-0.15

0.30-0.60

≤0.025

≤0.025

≤0.50

1.90-2.60

0.87-1.13

/

/

/

/

/

P91

0.08-0.12

0.30-0.60

≤0.020

≤0.010

0.20-0.50

8.0-9.50

0.85-1.05

0.18-0.25

0.030-0.070

≤0.40

≤0.02

Cb 0.06-0.10

Ti 0.01max

Zr 0.01max

Heat Treatment Requirements

Grade

UNS

Number

Heat Treat Type

Austenitizing/ Solutioning

Temperature, min or range °F [°C]

Subcritical Annealing or Tempering

Temperature, Min or range °F [°C]

P11

K11597

full or isothermal anneal normalize and temper

1200 [650]

P12

K11562

full or isothermal anneal normalize and temper subcritical anneal

1200 [650]

1200-1300 [650 to 705]

P22

K21590

full or isothermal anneal normalize and temper

1250 [675]

P91

K91560

normalize and temper

quench and temper

1900-1975[1040-1080]

1900-1975[1040-1080]

1350-1470[730-800]

1350-1470[730-800]

Tensile Requirements and Hardness:

Mechanical Properties

Grade

Tensile

Yield

Elongation

Hardness

Strength (Mpa)

Strength (Mpa)

(%)

 

P11 P12

≥415

≥220

≥30

≤89HRB

P22

≥415

≥200

≥30

≤89HRB

P91

≥585

≥415

≥20

91HRB-25HRC

Flattening Test—One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot

Flaring Test—One flaring test shall be made on specimens from each end of one finished tube, not the one used for the flattening test, from each lot

Hydrostatic or Nondestructive Electric Test—Each tube shall be subjected to the nondestructive electric test or the hydrostatic test. The type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.

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