T-317, T-317L

Stainless Steel T-317, T-317L (UNS S31700, S31703)
  • 20-13-4 Chromium-Nickel-Molybdenum austenitic stainless steel.
  • Available in most forms, but owing to low-volume usage not as readily available as T-316.
Typical Analysis
T-317
C Mn P S Si Cr Ni Mo N
.08
Max
2.0
Max
.045
Max
.030
Max
1.0
Max
18/20 11/15 3/4 .10
Max
T-317L
C Mn P S Si Cr Ni Mo N
.04/.10 2.0
Max
.045
Max
.030
Max
1.0
Max
18/20 11/15 3/4 .10
Max
Characteristics
  • Essentially similar to T-316; but the increased chromium, nickel and molybdenum content results in better corrosion resistance, higher tensile strength and higher creep strength than T-316.
  • T-317L with .03% maximum carbon content is used to restrict carbide precipitation during welding and in applications where maximum corrosion resistance is required. In fact, for small quantities, T-317 is frequently available only as T-317L.
  • T-317 is non-magnetic in the annealed condition and is non-hardenable by heat treatment. Machinability is 39% - 65 surface feet per minute.
Typical Applications
  • Pulp and paper, chemical and pharmaceutical processing equipment and machinery.
Corrosion and Heat Resistance
  • Significantly better corrosion resistance that T-316 in the same environments. Good oxidation resistance in continuous service to 925℃ and in intermittent service to 879℃.
Stainless Steel T-317, T-317L (UNS S31700, S31703) Mechanical Properties - Bar
  • Typical at Room Temperature
Bars T-317 T-317L
Tensile Strength, psi 85,000 85,000
Tensile Strength, N/mm² 586 586
Yield Strength, psi 40,000 35,000
Yield Strength, N/mm² 276 241
Elongation (%) 50 55
Hardness 160 (82) 146 (80)
Stainless Steel T-317, T-317L (UNS S31700, S31703) Mechanical Properties - Sheet
  • Typical at Room Temperature
Sheet T-317 T-317L
Tensile Strength, psi 90,000 86,000
Tensile Strength, N/mm² 621 593
Yield Strength, psi 43,000 38,000
Yield Strength, N/mm² 296 262
Elongation (%) 45 55
Hardness 166 (86) 167 (83)
Stainless Steel T-317, T-317L (UNS S31700, S31703) Mechanical Properties - Plate
  • Typical at Room Temperature
Plate T-317 T-317L
Tensile Strength, psi 85,000 82,000
Tensile Strength, N/mm² 586 565
Yield Strength, psi 48,000 43,000
Yield Strength, N/mm² 330 296
Elongation (%) 51 55.5
Hardness 166 (86) 167 (83)

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