317L

317L is a molybdenum bearing Austenitic chromium nickel steel, compared to 316L, 317l more molybdenum, and low carbon content, so 317L has a excellent corrosion resistance, 317l is used for many applications, especially in sulfurous acid compounds environment, alloy 317L is non-magnetic in the annealed condition. It cannot be hardened by heat treatment.

317, 317L chemical composition

C Mn P S Si Ni Cr Mo
317 0.08 2.00 0.040 0.030 1.0 11-14 18-20 3.0-4.0
317L 0.03 2.00 0.040 0.030 1.0 11-15 18-20 3.0-4.0

317, 317L mechanical properties

Tensile strength(Mpa) Yield point(Mpa) Elongation(%) HARDNESS
317 515 205 35 95
317L 515 205 35 95

317, 317L Equivalent Grades

ChinaGB/T 2087806Cr19Ni13Mo3 (0Cr19Ni13Mo3)022Cr19Ni13Mo3 (00Cr19Ni13Mo3)
USAASTM A240317 , S31700317L , S31703
JapanJIS G 4303SUS 317SUS 317L
GermanyEN 10088-1X2CrNiMo18-15-4, 1.4438 >

317L Equivalent Grades chemical composition

Steel No.022Cr19Ni13Mo3, SUS317L317L1.4438
C≤ 0.03≤ 0.03≤ 0.03
Si≤ 1.00≤ 0.75≤ 1.00
Mn≤ 2.00≤ 2.00≤ 2.00
P≤ 0.045≤ 0.045≤ 0.045
S≤ 0.030≤ 0.030≤ 0.030
Ni11.0~15.011.0~15.013.0~16.0
Cr18.0~20.018.0~20.017.5~19.5
Mo3.0~4.03.0~4.03.0~4.0
N≤ 0.10≤ 0
  • Density: 7.89 g/cm3
  • Melting point: 1450°C

317L features

  • Higher alloy elements, low carbon content.
  • Superior corrosion resistance in harsh environments.
  • Higher creep, stress-to-rupture and tensile strengths than other stainless steels.
  • Good welding

317, 317L application

317 & 317L Commonly used in flue gas desulfurization systems, chemical and petrochemical processing, food and beverage industry, oil refining, condenser power plant equipment, paper industry etc.