Grade 304(L) : 316(L) Tube

UNS TP304 (TP304L) : UNS TP316 (TP316L) : ASTM A312 (VO1.01)

Chemical composition

304 (L)

'L' grade limits C to 0.035% max.
'L' grade increases Ni to 13% max.
C Si Mn P S Cr Ni Mo Fe
Min 18.00 8.00 0.00
Max 0.08 0.75 2.00 0.040 0.030 20.00 11.00 0.00

316 (L)

'L' grade limits C to 0.035% max.
'L' grade Ni range 10% to 15%
C Si Mn P S Cr Ni Mo Fe
Min 16.00 11.00 2.00 0.00
Max 0.08 0.75 2.00 0.040 0.030 18.00 14.00 3.00 0.00

Mechanical properties

Condition: Solution Annealed

'L' grade reduces values by 5 KSI.
NACE MR0175 limits supply hardness to 22 HRC max.
U.T.S 75 KSI Min (515 N/mm2)
0.2% Proof Stress 30 KSI Min (205 N/mm2)
Elongation 30 %
Red of Area 50 %
CVN Impacts @ -75°C (-100°F) 135 Joules (100 ft-lbf)
Size range: 1/”∅ OD up to 2”∅ OD with wall thickness from 22 swg to ”∅

General scope

Both austenitic stainless steel from the 300 series 18/8 family. With the additional Molybdenum in 316 giving slightly superior corrosion properties.

Normally supplied Solution Annealed/Treated although it can be supplied cold worked with higher strength properties. The "L" grade has a reduced carbon level to improve corrosion resistance after welding, and generally is more commonly available.

Primarily manufactured in:

  • Dubai, UAE
  • Edmonton, Canada
  • Houston, Texas
  • Sheffield, England
  • Singapore

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