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What is stainless steel 317LN?

Stainless steel 317LN is a nitrogen alloyed austenitic stainless steel having high nitrogen content than other austenitic stainless steels. It has higher yield and tensile strength than 317L. This low carbon grade steel provides resistance to sensitization during welding and thermal processes. Low carbon content in its composition makes the alloy resistant to inter granular corrosion. It also offers excellent corrosion resistance to organic, sulfuric and phosphoric acids.

317LN فولاد ضد زنگ 1.4434 فرم محصولات نهایی
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Applications for 317LN فولاد ضد زنگ
  • Chemical processing equipment
  • تجهیزات پردازش مواد غذایی
  • Pharmaceutical manufacturing equipment
  • Marine engines and exhaust systems
  • Offshore drilling platforms
  • Aerospace components
  • Power generation equipment
  • Heat exchangers
  • Boilers
  • Turbines
  • Piping systems
  • Reactors
  • Tanks
  • Valves
  • Springs
Equivalents of grade 317LN
JIS G4304عیدماKSISO Designationعتیقه
SUS317LN317LNS31753STS317LNX2CrNiMoN18-12-4317LN
ترکیب شیمیایی
Elementsباکلوچهدرمسمنگنهوتحرفپجفاس
Min (%)57.918113.00.1
Max (%)67.920154.02.00.750.220.0450.0300.030
خصوصیات مکانیکی 
PropertiesMetricImperial
Tensile strength≥590 MPa≥85600 psi
Yield strength≥285 MPa≥41300 ksi
Modulus of elasticity200 معدل29000 ksi
Shear modulus77 معدل11200 ksi
Poissons ratio0.2990.299
Elongation at break≥40%≥40%
خصوصیات فیزیکی
TP317LN Stainless steel 1.4434 (ما 31753) خصوصیات فیزیکی
TP317LN Stainless steel 1.4434 (ما 31753) خصوصیات فیزیکی
Manufacturing process

The properties of 317LN is similar to other conventional austenitic stainless steels, and can therefore, be fabricated in a manner similar to alloys 316L and 317L. Heat treatment of 317LN can be carried out at temperatures ranging from 1080 to1175°C (1975 to 2150°F) followed by rapid water quenching. This grade is not hardenable.

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