instrument and implant grade metal alloys

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Stainless Steel 1.4472 Medical Alloy

1.4472 Implant medical alloy is a Pressurised Electro-Slag Remelted (PESR) austentic stainless steel. It combines a high Nitrogen, Chromium and Manganese content along with a low Carbon and Sulphur content giving it a high toughness, good pitting resistance and close to zero delta-ferrite content.

This alloy can only be hardened through cold-working and it's excellent mechanical properties, fatigue resistance and corrosion resistance make it an ideal choice for a wide range of medical applications in the area of bone surgery, internal fixation devices and end-prosthesis. The tight controls of this alloy provide a high level of consistency and repeatability making it an prime choice for micro-mechanical devices.

1.4472 Implant is well adapted for both mirror polishing and electropolishing. This alloys meets the requirements for surgical implants as defined in ASTM F1586.

Typical Chemical Composition

C Si Mn P S Cr Mo Ni V Nb N Fe
Min 2.00 19.50 2.00 8.00 0.25 0.25 Balance
Max 0.008 0.75 4.25 0.025 0.008 22.00 3.00 11.00 0.80 0.50

Typical Mechanical Properties

Condition Tensile (Rm)
Yield (R0.2%)
A4d (%)
Annealed ≥ 740 ≥ 430 > 40
Cold Worked 900-1500 600-1200 13-35

Cleanliness - According to ASTM E45

Class Designation A B C D
Inclusion Type Sulfides Al Oxide Silicates Globular Oxide
Thin ≤ 1.5 ≤ 2.0 ≤ 2.0 ≤ 2.5
Heavy ≤ 1.5 ≤ 1.5 ≤ 1.5 ≤ 1.5


ISO 5832-9
EN DIN X4CrNiMnMo 21-9-4
ASTM F1586
NF S94-090
UNS S31675


1.4472 Implant is readily available in precision ground bar from 3.0mm diameter to 20.0mm diameter. Contact sales for more information

Disclaimer : Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

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Metal Weight Calculator

Metal Alloy



NOTE: Weights calculated are theoretical. Manufacturing tolerances should be allowed for and results adjusted accordingly.