Biomedical Engineering Reference
In-Depth Information
The austenitic structure also gives these grades excellent toughness,
even down to cryogenic temperatures. Additionally, grade 316
surgical steel is used in the manufacture and handling of food and
pharmaceutical products where it is often required in order to
minimize metallic contamination.
Ta b l e 3 . 6 Comparison of standardized some 300-type stainless steels
EN-standard
steel no . k . h . s DIN
EN-standard
steel name
SAE grade
UNS
1.4408
G-X 6 CrNizMo 18-10
316
1.4307
X2CrNi18-9
304L
S30403
1.4306
X2CrNi19-11
304L
S30403
1.4311
X2CrNiN18-10
304LN
S30453
1.4301
X5CrNi18-10
304
S30400
1.4404
X2CrNiMo17-12-2
316L
S31603
1.4401
X5CrNiMo17-12-2
316
S31600
1.4406
X2CrNiMoN17-12-2
316LN
S31653
1.4432
X2CrNiMo17-12-3
316L
S31603
1.4435
X2CrNiMo18-14-3
316L
S31603
1.4436
X3CrNiMo17-13-3
316
S31600
1.4571
X6CrNiMoTi17-12-2
316Ti
S31635
1.4429
X2CrNiMoN17-13-3
316LN
S31653
UNS, uniied numbering system.
Ta b l e 3 . 7 Characteristics of some 300 grade stainless steels (austenitic
chromium-nickel alloys)
Type Characteristics
304 the most common grade; the classic 18/8 stainless steel
304L same as the 304 grade but contains less carbon to increase
weldability; is slightly weaker than 304
304LN same as 304L, but also nitrogen is added to obtain a much
higher yield and tensile strength than 304L
316 the second most common grade (after 304); for surgical
stainless steel uses; alloy addition of molybdenum prevents
speciic forms of corrosion
316L extra low carbon grade of 316
316LN same as 316L, but also nitrogen is added to obtain a much
higher yield and tensile strength than 316L
Grade 316LVM austenitic stainless steel is initially electric-arc
melted and as a reinement to the purity and homogeneity of the
 
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