ASTM A350 LF2 Spectacle blind

Grade

C

Mn

P

S

Si

Ni

Cr

Mo

Cu

Nb

V

N

Grade LF2

0.30

0.60-1.35

0.035

0.040

0.15-0.30

0.40 max

0.30 max

0.12 max

0.40 max

0.02 max

0.08 max

...

Grade Symbol

LF2 Classes 1 and 2

Tensile Strength, min, ksi［Mpa］

70-95[485-655]

Yield Strength, min, ksi［Mpa］

36［250］

Elongation Standard round specimen, or small proportional specimn, min% in 4D gauge length

22

Strip specimen for wall thickness 5/16 in.[7.94mm] and over and for all small sizes tested in full section; min % in 2 in. [50mm]

30

Equation for calculating min elongation for strip specimens thinner than 5/16 in.[7.94mm]; min% in 2 in.[50mm]

48t+15

Reduction of area, min, %^C

30