Iron

Inch

1 1/4"

1 1/2"

1 3/4"

2"

2 1/4"

2 1/2"

2 3/4"

3"

3 1/4"

3 1/2"

3 3/4"

4"

4 1/4"

4 1/2"

4 3/4"

5"

5 1/2"

6"

6 1/2"

7"

7 1/2"

8"

8 1/2"

9"

9 1/2"

10"

12"

1"

1 1/4"

1 1/2"

1 3/4"

2"

2 1/4"

3"

3 1/4"

6"

9 1/2"

12"

16"

24"

36"

72"

1"

1 1/4"

2"

2 1/4"

2 5/8"

2 3/4"

3 1/4"

4 1/4"

5 1/4"

6 1/4"

1"

1 1/2"

2"

2 1/8"

2 1/4"

2 1/2"

2 5/8"

3 1/8"

3 1/4"

3 1/2"

4"

4 1/4"

5 1/4"

6 1/8"

6 1/4"

8 1/8"

12 1/4"

2 1/2"

3"

3 1/2"

4"

4 1/2"

5"

5 1/2"

6"

6 1/2"

7"

8"

9"

Medium

Hard

Extra Hard

1 1/2"

2"

2 1/2"

3"

3 1/2"

4"

4 1/2"

6"

7"

ASTM A247

ASTM A536

20,000 psi to 99,999 psi

Not Rated

Oversized

Rockwell C50

Rockwell C55

Rockwell C60

Rockwell C10

Rockwell C20

Rockwell C50

Rockwell C55

Rockwell C60

Rockwell C64

Material Certificate with Traceable Lot Number

1"

1 1/2"

Compliant

Compliant

EAR99

Yes

Less than 1,000° F

Not Rated

Not Rated

Exempt

Cast