Quality Assurance Uns S31753/1.4439 Nitrogen Alloyed Stainless Steel Bar for Surgical Equipment Medical Device Materials 317ln Steel Bar

• Customization: Available
• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN
• Model NO.: 317LN Rod/Bar
• Technique: Forged
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Surface Treatment: Polished
• Alloy: Non-alloy
• Special Use: Mold Steel, Free Cutting Steel, Cold Heading Steel
• Key Words: 317ln Steel
• Thickness: 2mm - 100mm
• Outside Diameter: 4.0 - 1219mm
• Length: as Your Requirments
• Diameter Tolerance: H9, H11, H13, K9, K11, K13 etc
• Sample: Free-Sample
• Surface: Lack, Peeled, Polishing, Bright, Sand Blast, Hl
• MOQ: 100kgs
• Stock: in Stock
• Transport Package: Wooden Package
• Specification: 317LN Steel
• Trademark: LORK
• Origin: China
• HS Code: 7219350000
• Production Capacity: 50000kg/Month

Product Description

Product Description

Introduction

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.
 

Chemical composition

The chemical composition of Grade 317LN stainless steel is outlined in the following table.

Element	Content (%)
Iron, Fe	63.43
Chromium, Cr	18.2
Nickel, Ni	14
Molybdenum, Mo	4.2
Nitrogen, N	0.15
Carbon, C	0.02

Grade Specification

Grade	UNS	DIN	EN	AMS	ASTM		JIS
317LN	UNS S31753	-	1.4439

Mechanical properties

The mechanical properties of Grade 317LN stainless steel are displayed in the following table.

Properties	Metric	Imperial
Tensile strength	≥590 MPa	≥85600 psi
Yield strength	≥285 MPa	≥41300 ksi
Modulus of elasticity	200 GPa	29000 ksi
Shear modulus	77 GPa	11200 ksi
Poissons ratio	0.299	0.299
Elongation at break	≥40%	≥40%

Physical properties

Property	Density: kg/dm^3	Hardness: HB (<=35mm) Rockwell Hardness Number max.	magnetizable	polishable
Value	8,1	<=350 B90 (S 31726-ASTM A 249)	no	good

 

 

Temperature T °C/F (°C/F)	Specific heat J / kgK (Btu / lb °F)	Thermal conductivity W/mK (Btu·in / ft^2·h·°F)	Electric resistance µΩ · cm (Ω circ mill / ft)	Modulus of elasticity kN/mm^2 (10^3 ksi)	Expansion rate from 70°F bis T 10^-6 / K (10^-6 / °F)
20 / 68	0,50 (--)			200 (--)	16,5 (--)
100 / 212					17,5 (--)
200 / 392					17,5 (--)
300 / 572					18,5 (--)
400 / 752					18,5 (--)
500 / 932

Technology

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.

Applications

317LN stainless steel is harmless to the human body, lead-free and non-toxic, and has good corrosion resistance and oxidation resistance, which makes it an ideal material for medical device manufacturing. Specifically, 317LN stainless steel is often used to manufacture surgical instruments, medical equipment and implantable medical devices, because it can withstand the erosion of chemical media for a long time and maintain good hygiene performance, and will not cause pollution or harm to the medical process.

 

Surface Treatment

 

 

 

 

 

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