Tape thickness

Deviation per batch

Same volume tolerance

Width and deviation

Cutting edge burr

Coil diameter I

035

±0.012

<0.012

( 252、242、253、243) *0.5 0

<0.06

0.25

±0.01

<0.01

(243 ) +0.50

<0.05

450-500

0.5

±0.012

<0.012

(243 ) +0.50

0.06

Element

C

Mn

P

S

Si

Ai

Chemical component ％

0.02-0.05

0.15-0.5

<0.02

<0.02

<0.03

0.02-0.05

Compressive strength

Yield strength

Elongation (50 gauge length)

Hardness

270-370

180-260

32-44

46-52