TM 1-1500-204-23-6
Table 4-10. Identification of Steel- CONT
Commercial
Current
Surface
designation
Specification
Physical condition
condition
Bars and Rods - continued
321
QQ-S-763
A (Annealed)
A (Same as
304)
410
QQ-S-763
A (Annealed)
A (Same as
304)
430
QQ-S-763
A (Annealed)
A (Same as
304)
16CR-2NI
MIL-S-18732
Type A-Annealed
Descaled
431 (Special
Type HT 175 (175,000
Quality)
PSI)
Type HT 115 (115,000
PSI)
Commercial
Current
designation
Specification
Type
Shape
Conditions
Tubing
1025
MIL-T-5066
I. Welded
Round and
Normalized, Cold-
II. Seamless
Other Shapes
drawn or Stress
Relieved
4130
MIL-T-6736
Welded
I. Round
A( Annealed)
II. Rectangular
N (Normalized)
and Square
HT-125 (125,000
III. Streamline
PSI
IV Oval
Minimum)
HT-150 (150,000
PSI
Minimum)
HT-180 (180,000
PSI
Minimum)
4130
MIL-T-6736
Seamless
Same as 4130
A (Annealed)
N (Normalized)
HT-1 50
HT-125
HT-180
4-24
