UNS R30008 Elastic Cobalt Alloy Cold Rolled Strip ASTM F1058 Grade 2 For

Product Specification

UNS R30008 is a wrought 40cobalt-20chromium-16iron-15nickel-7molybdenum alloy delivered in the form of wire and strip used for the manufacture of surgical implants.

UNS R30008 provides the best solution whenever high mechanical performance is required under severely corrosive service conditions.The mechanical strength increases with cold rolling strain. Yield strengths higher than 1800 MPa can be achieved simply by cold working. Additional strengthening can be obtained by age hardening at 500°C. The influence of aging is negligible in the annealed condition, but increases with the degree of cold work. By combining an appropriate amount of cold work with aging, it is possible to adjust the mechanical properties.

Spec

ASTM F1058 Type 2

Chemical composition(%, wt)

• C: 0.15 max
• Mn: 1.0-2.0 
• Si: 1.2 
• P: 0.015
• S: 0.015
• Co: 39.-42.0
• Cr: 18.5-21.5 
• Ni:15.0-18.0
• Mo:6.5-7.5
• Be:  0.001 max
• Fe: balance

Characters

• Exceptional resistance to corrosion, stress corrosion cracking and hydrogen embrtittlement.
• Good fatigue stregth.
• The absence of aging in service.
• The absence of magnetism.
• Ability to be used over a wide range of temperatures, from liquid helium to about 500°C.
• Perfect passivity in contact with human tissues.
• The possibility of increasing the strength of parts by age hardening after forming, leading to strength levels unattainable with other materials.
• The absence of brittleness at low temperatures (no transition temperature).
• A maximum service temperature about 100°C higher than for stainless steels.
• A corrosion resistance vastly superior to that of molybdenum containing stainless steels.
• A very high yield strength that combined with a high elastic modulus in both tension and torsion, enables the storage and rapid release of large amounts of elastic energy.

Applications

• Aeronautical and aerospace equipment
• Automotive ABS systems
• Automotive injection systems
• Electrical and electronic apparatus
• Equipment for the chemicals and oil & gas industries
• Flexible coupling
• Pacemaker electrodes
• Printer springs
• Prostheses for osteosynthesis
• Shaped springs (helical, etc…)
• Surgical implants and medical instruments
• Various diaphragms

Forms of supply

• Bar
• Cold Rolled strip
• Drawn and flat wire
• Heavy plate
• Wire rod

About XUNSHI

Suzhou Xunshi New Material Co. Ltd- referred as XUNSHI hereafter, is a professional manufacturer of high-performance alloy products. XUNSHI is engaged in supplying high quality and cost-effective Superalloy, Anti-Corrosion Alloy, Precision Alloy, Special Stainless Steel and Magnetostrictive Material to customers worldwide.

Why XUNSHI

· Highly experienced in alloy industry

· Top experts of industry in China

· Advanced technology and process from top famous institutes in China

· Advanced devices through whole production and inspection process

· Strict quality control system

· Company motto: best service, most value

· Smart sales policy

Service Items of XUNSHI

· Non-standard product research and pre-production

· Fabrication of products

· Cutting, splitting for sheets and plates in stock

· Heat treatment (Solution treatment, aging harden treatment, anneal, spring temper, quench etc.)

· Surface finish (peeling, gridding, polishing)

· Logistics service

· Customized packing service (also for exporting)

· Import and export (XUNSHI is certificated)

· Document translation

· Hard-to-find material sourcing

Customers of XUNSHI

Customers of XUNSHI are all over China (Taiwan and Hong Kong included). And we are exporting to USA, Canada, Italy, UK, Poland, Greece, Russia, Turkey, Iran, Israel, South Africa, South Korea, North Korea, India, Argentina, and Brazil and so on. Customers from 30+ countries trust us.

Where is XUNSHI

A- XUNSHI is in Huaqiao, Kunshan, 215332 China, which is very closed to Shanghai.

B- Xunshi is around 80KM from Shanghai Pudong International Airport (PVG).

C- 20KM from Shanghai Hongqiao Airport

D- 20KM from Shanghai Hongqiao Railway Station

E- You can contact XUNSHI sales for a pickup service.