Commercially Pure Grade 1

ASTM B265- GR.1
MIL-T-9046J CP-4

ASTM B348- GR. 1 ASTM F67 GR. 1

Commercially Pure Grade 2

AMS 4902
ASTM B265- GR.2
MIL-T-9046J CP-3
MIL-T-9046 Ty1Cp.A

ASTM B348- GR. 2
ASTM F67 GR. 2

MIL-T-81556A CP-3

Commercially Pure Grade 3

AMS 4900
ASTM B265-GR.3
MIL-T-9046J CP-2
MIL-T-9046 Ty1Cp.C

ASTM B348- GR. 3 ASTM F67 GR. 3

MIL-T-81556A CP-2

Commercially Pure Grade 4

AMS 4901
ASTM B265-GR.4
DMS 1536
MIL-T-9046J CP-1
MIL-T-9046 Ty1Cp.B

AMS 4921
ASTM B348- GR. 4
ASTM F67 GR. 4
MIL-T-9047 CP-1

AMS 4921
MIL-F-83142A Cp. 1

MIL-T-81556A CP-1