CHEMICAL PROPERTIES
MECHANICAL TUBING
Seamless, Welded, and D.O.M.
Low Carbon—Open Health
         
AISI  No.  

C**

 

Mn.

P. Max. S.

Max

1010 .05-.15 0.30-0.60 .040 .050
1018 .15-20 0.60-0.90 .040 .050
1020 .15-.25 0.30-0.90
1026 .21-.28 0.60-0.90
4140/42 .38/.45 .070-1.00
         
** Carbon limits are minimum and maximum on check analysis,  while the other elements are subject to AISI Standard Variations for check analyses.

Additional elements included:  Silicon—.15/.35, chromium—.80/1.00 and molybdenum .15/.25.

 

CARBON STEEL TUBING  
Typical Properties  
AISI Designation Condition Strength, PSI % Elong. In 2” Brinell

Hardness

Tensile Yield
Seamless
1018 Hot Rolled 52,000 32,000 28 107
  Cold Drawn 85,000 65,000 10 174
1026 Hot Rolled 70,000 47,000 28 116
  Cold Drawn 87,000 72,000 10 179
Welded
1020 HREW 52,000 38,000 12 107
  DOM 70,000 60,000 10 140
1026 DOM 85,000 75,000 8 174
Structural
ASTMA500 (B) Cold Formed 58,000* 46,000* 23