316and 316L stainless steel pipe are both the low carbon steel pipe and differ from the content in the element of Carbon.Standard for ASTM A312、A312M、ASTM A213，A213M、ASTM A240；JIS G 4304、JIS G4304，JISIG4303.
chemical composition(max value,%)
316
C ≤0.08
Si≤1.00
Mn≤2.00
P≤0.035
S≤0.03
Ni:10.0-14.0
Cr:16.0-18.5
Mo:2.0-3.0
316L
C≤0.03
Mechanical Property:
Meteria
Standar
Mechanic
Tensile
Strength
(MPa)
Yielded Strength
Elongation
(%)
≧485
≧205
≧30
≧480
≧200
≧40
From the two forms, we can see that type 316L has the same composition as Type 316 except the carbon content is held below 0.03%.
These alloys are known for their excellent welding properties, joined by both fusion and resistance processes. The 316L low carbon version is preferred in corrosive environments. It is important to make sure that copper and zinc do not become contaminants at the site of welds, as this can create cracking.
It is common to fabricate 316 and 316L into many different shapes. They may be formed on equipment similar to carbon steel, and are readily blanked and pierced. Excellent malleability means they perform well in deep drawing, spinning, stretching and bending.