Inch

Metric

0.062"

0.093"

1"

1 1/8"

1 1/4"

1 3/8"

1 1/2"

1 3/4"

2"

2 1/4"

2 1/2"

2 3/4"

3"

3 1/2"

4"

Annealed

Hardened

Stress Relieved

Medium

Hard

Oversized

Undersized

Standard

Tight

Ground

Polished

Precision Ground

Turned

Rockwell B85

Rockwell B90

Rockwell B98

Rockwell C10

Rockwell C15

Rockwell C19

Rockwell C25

Rockwell C26

Rockwell C27

Rockwell C28

Rockwell C30

Rockwell C32

Rockwell C35

Rockwell C40

Rockwell C48

Rockwell C60

Not Rated

40,000 psi to 99,999 psi

100,000 psi to 199,999 psi

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"

8"

10"

12"

Cold Drawn

Cold Worked

Hot Rolled

Seamless

ASTM Standard

DIN 6880

1 1/2"

1 3/4"

2"

2 1/4"

2 1/2"

2 3/4"

3"

3 1/4"

3 1/2"

4"

4 1/2"

5"

6"

8"

Plain

Polished

Rockwell C32

Rockwell C48

Rockwell C60

Not Rated

Material Certificate with Traceable Lot Number

1"

1 1/4"

2"

Compliant

Exempt

Not Compliant

Compliant

Compliant with Exemptions

Not Compliant

Compliant

Not Compliant

EAR99