instrument and implant grade metal alloys

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Stainless Steel 304/304L (1.4301/1.4307) Medical Alloy

This grade simulataneously meets the chemistry requirements of both 304 and 304L due to its low Carbon content, which also reduces its risk of sensitization risk in the temper range 450-800°C. It has a relativel low magnetic permeability in the annealed condition which can almost double after cold working. 304/304L is workable up to 400°C and has a reasonable corrosion resistance in chloride-free salt solutions.


Surgical instruments
Chemical industry

304 : Typical Chemical Composition

C Si Mn P S Cr Mo Ni V Nb N Fe
Min 17.00 8.00
Max 0.07 1.00 2.00 0.045 0.015 19.50 10.50 0.11

304L : Typical Chemical Composition

C Si Mn P S Cr Mo Ni V Nb N Fe
Min 17.50 8.00
Max 0.03 1.00 2.00 0.045 0.015 19.50 10.00 0.11

Typical Mechanical Properties

Condition Tensile (Rm)
Yield (R0.2%)
Solution Heat Treated 125 Max 140-241


1.4301 / 1.4306 / 1.4307
ISO X5CrNi18-10 / X2CrNi19-11 / X2CrNi18-9
EN/DIN X5CrNi18-10 / X2CrNi19-11 / X2CrNi18-9
AFNOR X10CrNi18-10
UNS S30400


Stainless Steel 304/304L (1.4301/1.4307) Medical Alloy is available in wire and round bar from 0.150mm diameter up to 55.00mm diameter

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