ASTM A182 F11 Spectacle blind

Grade

Heat Treat Type

Austenitizing/Solutioning Temperature, Minimum or Range, ℉［℃］^A

Cooling Media

Quenching Cool Below ℉［℃］

Tempering Temperature, Minimum or Range, ℉［℃］

F11 Class 1,2,3

Anneal

Normalize and temper

1650［900］

Furnace cool

Air cool

B

1150［620］

Grade

UNS Designation

C

Mn

P

S

Si

Ni

Cr

Mo

Co

Ti

Other Elements

F11 Class 1

K11597

0.05-0.15

0.30-0.60

0.030

0.030

0.50-1.00

...

1.00-1.50

0.44-0.65

...

...

...

F11 Class 2

K11572

0.10-0.20

0.30-0.80

0.040

0.040

0.50-1.00

...

1.00-1.50

0.44-0.65

...

...

...

F11 Class 3

K11572

0.10-0.20

0.30-0.80

0.040

0.040

0.50-1.00

1.00-1.50

0.44-0.65

Grade Symbol

Tensile Strength, min, ksi［Mpa］

Yield Strength, min, ksi［Mpa］

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

Reduction of Area, min, %

Brinell Hardness Number, HBW, unless otherwise indicated

F11 Class 1

60［415］

30［205］

20

45

121-174

F11 Class 2

70［485］

40［275］

20

30

143-207

F11 Class 3

75［515］

45［310］

20

30

156-207