Grade

ELEMENT COMPOSITION , %

Ti

AL

V

Fe

C

N

H

O

Others,max

Grade 1

Balance

-

-

0.20

0.08

0.03

0.015

0.18

0.40

Grade 2

Balance

-

-

0.30

0.08

0.03

0.015

0.25

0.40

Grade 3

Balance

-

-

0.30

0.08

0.05

0.015

0.35

0.40

Grade 4

Balance

-

-

0.50

0.08

0.05

0.015

0.40

0.40

Grade

Tensile Strength,Mpa(>)

Elongation,%(>)

Grade 1

240

20

Grade 2

345

18

Grade 3

450

18

Grade 4

550

18