Product Specification and Size :
1):Standard: ASTM F138 ASTM F899.
2):round bar (bright surface): D(0.8-25)mm
3):Tolerance: h7-h11(on request).
4):Melt method: vacuum melting
5):Material designation: Fe-18Cr-14Ni-3Mo
DESCRIPTION OF F138 STEEL BAR
316LVM F-138 is considered “medical stainless steel”. This stainless steel 316 vacuum arc remelt (VAR) achieves the very high purity and “cleanliness” required for surgical implants. It has excellent resistance to general and intergranular corrosion, pitting and crevice corrosion in a physiological environment.
The ASTM F138 specification indicates implant grade. It is mainly used for permanent implants. Compared with 300 series alloy grades, the reduced carbon content improves the corrosion resistance of 316LVM.
Chemical Composition of F138 steel bar
| Chemical Composition | |||||||
| Grade | C | Si | Mn | P | S | Ni | Cr |
| 316 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 10.00-14.00 | 16.00-18.00 |
| 316L | 0.03 | 1.00 | 2.00 | 0.045 | 0.03 | 10.00-14.00 | 16.00-18.00 |
| 316Ti | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 10.00-14.00 | 16.00-18.00 |
| 316LVM | 0.014 | 0.26 | 1.63 | 0.015 | 0.002 | 14.71 | 17.69 |
specification:
UNS S31673
W.NR 1.4441
AWS 163
ASTM F138 (Stick / Stick)
ASTM F139 (worksheet), ISO 5832-1, BS ISO 5832-1
ASTM F899
The material meets the requirements of 316LS.
Application:
Temporary and permanent medical implants such as the hip, femoral head, spinal system, acetabular cup, bone screws and pins. Cardiovascular applications: guidewires, cardiac stents, surgical instruments and tools; lancets, probes. High-precision electronics, sutures, orthopedic cables, skin staples, catheters, small machined parts, body jewelry. Bone nail
