TP317L/S31703/1.4438/ X2CrNiMo 19-14-4 SEAMLESS STAINLESS STEEL PIPE AND TUBE

HomeProducts & servicesAustenitic Stainless Steel Pipes And Tubes TP317L/S31703/1.4438/ X2CrNiMo 19-14-4 SEAMLESS STAINLESS STEEL PIPE AND TUBE
TP317L/S31703/1.4438/ X2CrNiMo 19-14-4 SEAMLESS STAINLESS STEEL PIPE AND TUBE

TP317L/S31703/1.4438/ X2CrNiMo 19-14-4 SEAMLESS STAINLESS STEEL PIPE AND TUBE

① STANDARD: ASTM A213/ ASTM A312/ ASTM A249/ ASTM A269/ GOST 9940 /GOST 9941...

② OD RANGE : 6-1016 MM

③ THICKNESS RANGE: 1-65 MM

Chemical Composition

C

Si

Mn

P

S

Cr

Mo

Ni

≤0.035

≤0.075

≤ 2.00

≤0.04

≤0.03

18.00-20.22

3.00-4.00

11.00-15.00

Mechanical Properties

Tensile Strength

ksi (Mpa)

Yield Strength

ksi (Mpa)

Elongation -% in 50 mm

Hardness (Brinell) MAX

Hardness

Rockwell

≥75(515)

≥30(205)

≥35

≤ 192HBW/200HV

≤ 90HRB

Applications

Grade 317L is commonly used to handle sulfur, pulp liquor, acid dyestuffs, acetylating and nitrating mixtures, bleaching solutions, severe coal and oil, and many chemical compounds. Some other applications that use 317L include:

  • Paper and pulp handling equipment
  • Chemical and petrochemical processing equipment
  • Condensers in fossil and nuclear fueled power generation stations
  • Food processing equipment
  • Textile equipment

Material Summary

317L (UNS S31703) is a low carbon corrosion resistant austenitic chromium-nickel-molybdenum stainless steel. The high levels of these elements assure the steel has superior chloride pitting and general corrosion resistance to the conventional 304/304L and 316/316L grades. The steel provides improved resistance relative to 316L in strongly corrosive environments containing sulfurous media, chlorides, and other halides.

The low carbon content of 317L enables it to be welded without intergranular corrosion resulting from chromium carbide precipitation enabling it to be used in the as-welded condition.

The grade 317L is non-magnetic in the annealed condition. It cannot be hardened by heat treatment; however the material will harden due to cold working. 317L can be easily welded and processed by standard shop fabrication practices.

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