钢管标准ASTM A276-2008
TABLE1Continued
UNSDesigna-tionBS40500S40976S42900S43000S44400
Composition,%
Type405...429430444
Carbon0.080.0300.120.120.025
Manganese1.001.001.001.001.00
Phos-phorus0.0400.0400.0400.0400.040
Sulfur0.0300.0300.0300.0300.030
Silicon1.001.001.001.001.00
Chromium11.5–14.510.5–11.714.0–16.016.0–18.017.5–19.5
Nickel0.500.75–1.00......1.00
Molyb-denum............
1.75–2.50
Nitrogen...0.040......0.035
OtherElementsAl0.10–0.30Cb103(C+N)-0.80......
Ti+Cb0.20+43(C+N)-0.80...
Cu0.20
Cb0.05–0.20C+N0.025Cu0.15C+N0.025Cu0.15
S44700S44800
......
0.0100.010
0.300.30
0.0250.025
0.0200.020
0.200.20
28.0–30.028.0–30.0
MartensiticGrades
S40300S41000S41040S41400S41425S41500S42000S42010S43100S44002S44003S44004
AB
403410XM-30414...
H
420...431440A440B440C
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Maximum,unlessrangeorminimumisindicated.
DesignationsestablishedinaccordancewithPracticeE527andSAEJ1086.C
Forsomeapplications,thesubstitutionofType304LforType304,orType316LforType316maybeundesirablebecauseofdesign,fabrication,orservicerequirements.Insuchcases,thepurchasershouldsoindicateontheorder.D
Nitrogencontentistobereportedforthisgrade.E
%Cr+3.33%Mo+163%N$40.F
Nickelpluscoppershallbe0.50%max.G
Productanalysistoleranceoverthemaximumlimitforcarbonandnitrogenshallbe0.002%.H
WroughtversionofCA
6NM.
4.1.1.4ConditionS—StrainHardened—Relativelylightcoldwork
4.1.1.5ConditionB—Relativelyseverecoldwork
6.MechanicalPropertiesRequirements
6.1Thematerialshallconformtothemechanicaltestrequirementsspeci edinTable2.
6.2Themartensiticgradesshallbecapableofmeetingthehardnessrequirementsafterheattreatingasspeci edinTable3.
6.3Hardnessmeasurements,whenrequired,shallbemadeatalocationmidwaybetweenthesurfaceandthecenterofthecrosssection.
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5.ChemicalComposition
5.1Thesteelshallconformtotherequirementsforchemicalcompositionspeci edinTable1.
5.2Methodsandpracticesrelatingtochemicalanalysisrequiredbythisspeci cationshallbeinaccordancewithTestMethods,Practices,andTerminologyA751.
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9.Certi cation
0.15
0.08–0.150.180.150.050.050.15min0.15–0.300.20
0.60–0.750.75–0.950.95–1.201.001.001.001.00
0.50–1.000.50–1.001.001.001.001.001.001.000.0400.0400.0400.0400.0200.0300.0400.0400.0400.0400.0400.0400.0300.0300.0300.0300.0050.0300.0300.0300.0300.0300.0300.0300.501.001.001.000.500.601.001.001.001.001.001.0011.5–13.011.5–13.511.0–13.011.5–13.512.0–15.011.5–14.012.0–14.013.5–15.015.0–17.016.0–18.016.0–18.016.0–18.0
com
0.15
3.5–4.2
0.020
2.00–2.50
3.5–4.2
0.020
.........1.25–2.504.0–7.03.5–5.5...0.35–0.851.25–2.50
.........
............
1.50–2.000.50–1.00...
0.40–0.85...0.750.750.75
S44600S44627446XM-27F0.200.010G1.500.400.0400.0200.0300.0201.000.4023.0–27.025.0–27.50.750.50...
0.75–1.500.250.015G
............
0.06–0.12...........................
Cb0.05–0.30...
Cu0.30.....................
7.MagneticPermeability
7.1Whenrequiredbythepurchaseorder,themagneticpermeabilityofTypes201and205intheannealedconditionshallnotexceed1.2astestedbyaSevern-typeindicator.8.GeneralRequirements
8.1Inadditiontotherequirementsofthisspeci cation,allrequirementsofthecurrenteditionofSpeci cationA484/A484Mshallapply.FailuretocomplywiththegeneralrequirementsofSpeci cationA484/A484Mconstitutesnon-conformancetothisspeci cation.
9.1Uponrequestofthepurchaserinthecontractororder,theproducer’scerti cationthatthematerialwasmanufacturedandtestedinaccordancewiththisspeci cation,togetherwithacerti edreportofthetestresultsshallbefurnishedatthetimeoftheshipment.
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