Typical Mechanical Properties of round Alloy Steel Tube and Pipe

Taken from: http://www.emjmetals.com/

Legend:
CREW = Cold Rolled Electric Welded
HREW = Hot Rolled Electric Welded
ERW = Electric Resistance Welded
CDS = Cold Drawn Seamless
DOM = Drawn Over Mandrel
HFS = Hot Finished Seamless
CDBW = Cold Drawn Butt Welded (Continuous)
W&D = Welded and Drawn

Grade  and  Description Tensile Strength Yield Strength Elongation Rockwell hardness
         
Units ksi ksi % in 2" typical

4130
CDS
90 70 20 RB91

4130
HFS
90 70 20 RB91

4130
DOM
100 90 15 RB90

4140
CDS
NORM    120
SRA    120
HT    140
NORM    90
SRA    100
HT    115
10-20
NORM    RB101
SRA    RB101
HT    RB108

4140
HFS
120 90 20 RB101

4340
CDS, HFS
CDS 110 CDS 75 16-20 CDS RB98

8620
CDS, HFS
78 56 31 RB83

52100
CDS ANN, HFS ANN

9Cr1Mo
Seamless
93 60 31.3 RC22