ASTM A449
Jun 15,2018

Standar for Bolt

Grade

Bolt Size

Tension Stength

Yield Strength

Enlogation

Hardness

Head Marking

in.

ksi

ksi

%

Brinell

Rockwell C

A449

type1

1/4 to 1

120min

92min

14

255-321

25-34

over 1 to 1-1/2

105min

81min

14

223-285

19-30

over 1-1/2 to 3

90min

58min

14

183-235

/

type2

1/4 to 1

120min

92min

14

255-321

25-34

over 1 to 1-1/2

105min

81min

14

223-285

19-30

over 1-1/2 to 3

90min

58min

14

183-235

/

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