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ASTM A182

9.2 ASTM A182.jpg

ASTM A182: American Society for Testing and Materials Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

 

Chemical Requirements

Identification

Symbol

UNS

Designation

Grade

Composition   %

C

Mn

P

max

S

 max

Si

Ni

Cr

Mo

Nb

Ta
  max

Ti

F5

K41545

4~6%Cr

0.15 max

0.30–0.60

0.03

0.03

0.50 max

0.50 max

4.0–6.0

0.44–0.65

-

-

-

F9

K90941

9%Cr

0.15 max

0.30–0.60

0.03

0.03

0.50–1.00

-

8.0–10.0

0.90–1.10

-

-

-

F91

K90941

9%Cr,

1%Mo,

0.2%V+Nb&N

0.08–0.12

0.30–0.60

0.02

0.01

0.20–0.50

0.40 max

8.0–9.5

0.85–1.05

Other Elements
    Cb 0.06–0.10
    N 0.03–0.07
    Al 0.04 max
    V 0.18–0.25

-

F11

K11597

1.25%Cr
    0.5%Mo

0.05–0.15

0.30–0.60

0.03

0.03

0.50–1.00

-

1.00–1.50

0.44–0.65

-

-

-

F12

K11562

1%Cr,
    0.5%Mo

0.05–0.15

0.30–0.60

0.045

0.045

0.50 max

-

0.80–1.25

0.44–0.65

-

-

-

F22

K21590

Cr-Mo

0.05–0.15

0.30–0.60

0.04

0.04

0.50 max

-

2.00–2.50

0.87–1.13

-

-

-

 

Mechanical Properties

Identification Symbol

Tensile Strength, min, ksi [MPa]

Yield Strength, min, ksi [MPa]

Elongation in 2 in.
  [50 mm] or 4D,
   min, %

F5

70 [485]

40 [275]

20

F9

85 [585]

55 [380]

20

F91

85 [585]

60 [415]

20

F11

60 [415]

30 [205]

20

F12

60 [415]

32 [220]

20

F22

60 [415]

30 [205]

20


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