Corrosion handbook

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Summing up all of the factors results in a number of points (the CRF) which then

relate to five corrosion resistance classes (see Table 4). This is only an excerpt of

the procedure. For details please refer to the standards.

Corrosion resistance class CRC (link to the corrosion resistance factor CRF)

CRF = 1

0 ≥ CRF > -7

III

-7 ≥ CRF > -15

-15 ≥ CRF ≥ -20

CRF < -20

1.4003 1.4301 1.4401 1.4439 1.4565

1.4016 1.4307 1.4404 1.4462 1.4529

1.4512 1.4311 1.4435 1.4539 1.4547

1.4541 1.4571 1.4410

1.4318 1.4429 1.4501

1.4306 1.4432 1.4507

1.4567 1.4162

1.4482 1.4662

1.4362

1.4062

1.4578

Table 4: List of stainless steel grades in the corrosion resistance classes based on

the tables in EN 1993-1-4:2006 (final draft version 2014)

In the Hilti range of fasteners and installation systems you will find grades such

as 1.4301, 1.4404 and the most stable 1.4529 (see Table 6), covering all important

corrosion resistance classes.

Steel grades Corrosion resistance class Products

1.4301 (A2, 304) II Screws, anchors, installation

products

1.4401 (A4, 316) III Screws, anchors, installation

products, fasteners driven by

powder-actuated tools

1.4404 (A4, 316L) III Screws, anchors, installation

channels, fasteners driven by

powder-actuated tools

1.4571 (A5, 316Ti) III Installation products

1.4362 (duplex, 2304) III Anchors, fasteners driven by

powder-actuated tools

1.4462 (duplex, 2205) IV Fasteners driven by

powder-actuated tools

1.4529 (HCR) V Anchors

Table 5: Examples of stainless steels used in Hilti products

For more detailed information on the stainless steel grades used in our products

please refer to our product catalogs or visit www.hilti.com.