ASTM F1586 S31675 Nitrogen Strengthened Stainless Steel Alloy Bar For Surgical Implants

In recent years, the demand for high-end medical stainless steel has been increasing. Due to the high cost, long delivery cycle and high communication cost of imported medical stainless steel, the call for the localization of high-end medical stainless steel has also been increasing. Domestic S31675 high nitrogen stainless steel was born in this context.

UNS S31675 (ASTM F1586) is a nitrogen-enhanced stainless steel for surgical implants, mainly used for hip and knee joints and fracture fixation devices. Its special use requires that the material must be very "pure", that is, the content of non-metallic inclusions such as sulfides, alumina, silicates and spherical oxides is low. This grade of stainless steel is usually produced using the electroslag remelting (ESR) smelting process. ESR is an ultra-refining process that can give stainless steel an excellent micro-cleanliness level that meets the requirements of the specifications. It can also meet other special requirements of these ASTM standards for implant materials, such as fine grain structure. And compared with 316LVM (S31673), S31675 high nitrogen stainless steel has better corrosion resistance. The domestic S31675 adopts the same production process as European and American products, and its quality is not inferior to that of imported products. It also has great advantages in price, delivery cycle, minimum order quantity, etc.

Spec

• ASTM F1586
• ISO 5832-9
• YY0605.9-2007
• EN 10088-3 09/05 X4CrNiMnMo 21-9-4
• 2.4772
• M30NW

Chemical composition(wt, %)

• C::0.08 max.
• Mn:2.00-4.25
• P:0.025 max.
• S:0.01 max
• Si:0.75 max
• Cr:19.5-22.0
• Ni:9.0-11.0
• Mo:2.0-3.0
• N:0.25-0.50
• Nb:0.25-0.80
• Cu:0.25 max
• Fe::Rem

Form of supply

• Wire
• Rod
• Forging
• Round bar