Exera® 316LVM medical wire Wire

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Datasheet updated

2023-03-30 12:12
(supersedes all previous editions)

Exera® 316LVM is a vacuum remelted, molybdenum alloyed, austenitic stainless steel.

The grade is characterized by:

  • High strength
  • High fatigue strength
  • Excellent microcleanliness
  • Excellent structural homogeneity
  • High surface finish


  • UNS: S31673
  • DIN: X 2 CrNiMo 18 15 3

Product standards

  • Bar and wire: ASTM F138

Chemical composition (nominal)

Chemical composition (nominal) %
C Si Mn P S Cr Ni Mo Cu N
≤0.025 0.6 1.7 ≤0.025 ≤0.003 17.5 14 2.8 ≤0.10 ≤0.10


Exera® 316LVM is used for implant applications; hip stems, femoral heads, spinal systems, acetabular cups, intramedullary nails, bone screws, knee joints, and pins, bone and nail plates, internal fixation devices, dental implants, staples.

This grade is also used for cardiovascular applications: guide wires, cardiac stents and for surgical instruments and tools; blood lancets, stylets, trocars.

Corrosion resistance

Exera® 316LVM has very good resistance in physiological environments to:

  • General and intergranular corrosion due to high purity and low ferrite content
  • Pitting and crevice corrosion due to the high molybdenum content

Exera® 316LVM is capable of passing the Moneypenny Strauss intergranular corrosion test, in accordance with ISO / ASTM requirements.

Forms of supply

Wire, spools / coils

Size range:
Spools: 0.010-2 mm (0.0004-0.79 in.)
Coils: 1-5 mm (0.039-0.197 in.)

The wire in spools/coils is delivered bright drawn.


Ground bars: h8 as standard, h6 on request
Drawn in coil/spool: D2

Tighter tolerances can be offered on request.

Wire, straightened lengths

Bright drawn: diameter 0.60-5.0 mm (0.02-0.197 in.)
Ground diameter: 0.6-10 mm (0.02-0.394 in.)


Drawn, straightened: h9
Tighter tolerances to be discussed in each and every individual case

Other product forms

Exera® 316LVM can also be supplied as bar (round) and tube (thick wall or thin wall), then under the trademark Alleima® 316LVM.

Mechanical properties

Product form Condition Tensile strength Proof strength Elongation, A Hardness, Brinell

Rm Rp0.2

MPa ksi MPa ksi %

min min min min typical typical
Bar, Wire Annealed 490 71 190 28 45 160
Bar, Wire Medium tensile 900 131 700 101 15 285
Bar, Wire High tensile 1100 160 800 116 12 300
Bar, Wire Extra high tensile 1400 203

Tube, thick wall Bright annealed 515-690 75-100 220 32 min 45 155-210
Tube, thick wall Cold finished 860-1100 125-160 690 100 min 12 260-330
Profile Cold rolled 860-1100 125-160 690 100 12 260-330
Tube , thin wall
Tube, thin wall
Cold worked

Note that extra high tensile strength can be achieved for diameter ≤ 5 mm

Physical properties

Density ( 20 °C) 8.0 g/cm3 0.29 lb/in3
Modulus of elasticity, x103 (20°C) 200 MPa 29.0ksi
Specific heat capacity (20°C) 485 J/(kg °C) 0.11Btu/(lb °F)
Thermal conductivity (20°C) 14W /(m °C) 8 Btu/(ft h °F)
Thermal expansion, x10-6 (30-100°C) 16.5 per °C 9.5 per °F


Hardness Cutting speed range Feed range
SFM m/min IPR mm/rev
Turning 160-300 900-145 275-45 0.002-0.024 0.05-0.6
Milling 160-300 870-165 265-50 0.002-0.016 0.05-0.4
Drilling 160-300 115-195 35-60 0.002-0.012 0.05-0.3

Disclaimer: Alleima is not providing any products or services that are intended or may be construed to be recommending or otherwise advising on, in any manner, the design, suitability, appropriateness or effectiveness, from a medical/biological/safety perspective, of any medical material, instrument and/or medical device.