Acciaio armonico: differenze tra le versioni

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Riga 8:
 
== Esempi di designazione ==
===Norme europee===
{| class="prettytable"
! Designazione || Materiale-Nr. || Esempi di utilizzo || Norma || designazione [[Deutsches Institut für Normung|DIN]]
|-
| 38[[SiliziumSilicio|Si]]7 || 1.5023 || [[Seeger]], [[Molla]] || EN 10089 ||
|-
| 61Si[[ChromCromo|Cr]]7 || 1.7108 || [[Balestra (meccanica)|Molla a foglie]], [[Sospensione (meccanica)|Molla a spirale]] || EN 10089 || 60SiCr7
|-
| 52Cr[[MolybdänMolibdeno|Mo]][[Vanadium|V]]4 || 1.7701 || [[Molla]] con grosse dimensioni || EN 10089 || 51CrMoV4
|-
| 51CrV4 || 1.8159 || [[Spina elastica]] || EN 10089 || 50CrV4
|-
| C67E / C67S || 1.1231 || Molle di precisione, [[Spina elastica]] || EN 10132 || Ck67 <ref>http://www.metallograf.de/start.htm?werkstoffkartei/1231/1231.htm</ref> <ref>http://www.banki.hu/~aat/oktatas/gepesz/anyagtudomany2/diagram/m_1231_C67S.pdf</ref>
|}
===Norme statunitensi===
{| class="wikitable"
|+
|-
! designazione [[Society of Automotive Engineers|SAE]]([[ASTM]]) !! Composizione !! [[Snervamento]] !! [[Durezza]] [[Scala di Rockwell|HRC]] !! Durezza massima [[Scala di Rockwell|HRC]] !! Note
|-
| 1074/1075<ref name="mcmaster3630">{{Citation | title = McMaster-Carr catalog | publisher = McMaster-Carr | edition = 116th | page = 3630 | url = http://www.mcmaster.com/#catalog/116/3630 | accessdate = 2010-09-03 | postscript =.}}</ref> || 0.70-0.80% [[carbon|C]], 0.50-0.80% [[manganese|Mn]], max. 0.040% [[fosforo|P]], max. 0.050% [[zolfo|S]]<ref name="bookilootedfromanabandonedwarehouse">Oberg, Erik, and F D. Jones. ''Machinery's Handbook''. 15th ed. New York: The Industrial Press, 1956. 1546-1551. Print.</ref>|| || 44–50<ref name="admiralsteel"/> || 50 || '''Scaleless blue steel'''
|-
| 1095 (A684)<ref name="mcmaster3630"/> || 0.90-1.03% [[carbonio|C]], 0.30-0.50% [[manganese|Mn]], max. 0.040% [[fosforo|P]], max. 0.050% [[zolfo|S]]<ref name="bookilootedfromanabandonedwarehouse"/>|| 60–75 ksi (413-517 [[Pascal (unità di misura)|MPa]]) Annealed || 48–51<ref name="admiralsteel">http://www.admiralsteel.com/pdf/catalog.pdf</ref> || 59 || '''Blue spring steel'''
|-
| 5160 (A689)<ref>{{Citation | title = McMaster-Carr catalog | publisher = McMaster-Carr | edition = 116th | page = 3632 | url = http://www.mcmaster.com/#catalog/116/3632 | accessdate = 2010-09-03 | postscript =.}}</ref> || 0.55-0.65% [[carbonio|C]], 0.75-1.00% [[manganese|Mn]], 0.70-0.90% [[cromo|Cr]]<ref name="bookilootedfromanabandonedwarehouse"/>|| 97 ksi (669 MPa) || || 63 || '''Chrome-silicon spring steel'''; fatigue-resistant
|-
| 9255 || 0.50-0.60% [[carbonio|C]], 0.70-0.95% [[manganese|Mn]], 1.80-2.20% [[silicio|Si]]<ref name="bookilootedfromanabandonedwarehouse"/>|| || || ||
|-
| 301 Spring-tempered [[inox ferritico]] (A666)<ref>{{Citation | title = McMaster-Carr catalog | publisher = McMaster-Carr | edition = 116th | page = 3662 | url = http://www.mcmaster.com/#catalog/116/3662 | accessdate = 2010-09-03 | postscript =.}}</ref> || 0.08-0.15% [[carbonio|C]], max. 2.00% [[manganese|Mn]], 16.00-18.00% [[cromo|Cr]], 6.00-8.00% [[nickel|Ni]]<ref name="bookilootedfromanabandonedwarehouse"/>|| 147 ksi (1014 MPa) || || 42 ||
|}