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Part Number

Austenitic Stainless Steel, Free Cutting AISI 303 / WS 1.4305

Chemical Composition Limits

Weight % C Si Mn Cr Ni S Cu Fe

 CHRONIFER

SPECIAL D 18/8

 0.10 Max 1.00 Max  2.00 Max  17.00-19.00  8.00-10.00  0.15-0.35 0.50-1.50 Rem 

Other Chemically similar Specifications 

Weight % C Si Mn Cr Ni S Cu Fe
WS 1.4305  0.10 Max 1.00 Max   2.00 Max  17.00-19.00  8.00-10.00  0.15-0.35 0.50-1.50 Rem 
DIN X 8 CrNiS 18 9  0.10 Max 1.00 Max   2.00 Max  17.00-19.00  8.00-10.00  0.15-0.35 0.50-1.50 Rem 
AISI 303  0.10 Max 1.00 Max   2.00 Max  17.00-19.00  8.00-10.00  0.15-0.35 0.50-1.50 Rem 

AFNOR

 Z 8 CNF 18-09

 0.10 Max 1.00 Max   2.00 Max  17.00-19.00  8.00-10.00  0.15-0.35 0.50-1.50 Rem 

Chronifer Special D 18/8 material is Manufactured in Rod, Bar and coil

AISI 303 Stainless Steel

 

Corrosion Resistance

It resist rusting form all atmospheric sources and is recommended for use in connection with foodstuff, sterilizing solutions, most of organic chemicals and dyestuff.  For best results it is recommended that the surface of parts is polished and free from scale or foreign particles.  This is accomplished with passivation.

 

Surface Tension

< 2.00 mm: cold drawn, polished

>= 2.00 mm: cold drawn, ground polished with surface roughness N5

Standard in bars of 3m length +/-, other lengths on request 

In coils for Escomatic machines (approx 35 kg/coil)

 

Tolerances

Standard ISO h7, 2-8 mm in ISO h6 (special dimensions and tolerances are in short delivery time available)

 

Heat Treatment

For high corrosion resistance and low magnetism, there may be an annealing procedure necessary.  This annealing is only useful after a strong cold working which raised the mechanical resistance.

Annealing: Heat to 1010-1120C (1850-2050 F) and water quench.

Hardening: Cannot be hardened by heat treatment.

 

Mechanical Properties

Tensile strength :at delivery form 700-980 N/mm2

                         after annealing   540-750 N/mm2

 

Cutting rate

50-70 m/min (approx value, depending on the lubrication oil, the cutting tools and the shape of parts)

 

Stock Range

0.50 to 25.00 mm round full bars in stock, other dimensions on request

2.00 to 14.00 mm in hexagonal and 3.00-12.70mm in square.

 

 

 

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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