ASTM A790/A790M

ASTM A790/A790M

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ASTM A790/790M Pipes
Standard: ASTM A790/790M
Material/Steel Grade: S31803, S32205, S32750
Application: Seamless Duplex Stainless Steel Tubing for General Service
Size: OD: 3/4″~10″ WT: SCH5S~SCH80S
Finish: Mill
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产品详情

ASTM A790/790M Pipes

Standard: ASTM A790/790M

Material/Steel Grade: S31803, S32205, S32750

Application: Seamless Duplex Stainless Steel Tubing for General Service

Size: OD: 3/4″~10″ WT: SCH5S~SCH80S

Finish: Mill

                                     Duplex Stainless Steel Pipe Specification


Standard
Item		ASTM A789ASTM A790EN 10216-5



Grade

S31803 S32205 S32750S31803 S32205 S327501.4301 1.4307 1.4948   1.4315
1.4401 1.4404 1.4571   1.4541
1.4941 1.4845 1.4449   1.4438
1.4550 1.4912 1.4462   1.4410
Yield Strength
(Mpa)		≥450；≥485；≥550≥450；≥450；≥550—
Tensile Strength
(Mpa)		≥620；≥655；≥800≥620；≥655；≥800—
Elongation(%)≥25；≥25；≥15≥25；≥25；≥15—



Hydrostatic Test

The Hydrostatic Test shall be in accordance with ASTM A1016.


Could be replaced by ECT.		The Hydrostatic Test shall be in accordance with ASTM A999.


Could be replaced by ECT.		The hydrostatic test shall be carried out at a test pressure of 7MPa or
at a test pressure calculated using the following formula
P=2St/D S=70%Rp0.2
Intergranular Corrosion TestUsually, use Pitting Corrosion Test.Usually, use Pitting Corrosion Test.EN ISO 3651-2 (Optional)
Eddy Current TestCould be replaced by HT.Could be replaced by HT.EN 10246-3



O.D. Tolerance
(mm)

O.D.O.D.ToleranceO.D.O.D.ToleranceO.D. Tolerance Class
D<12.7+/-0.1310.3≤D≤48.3+0.40/-0.80D3+/-0.75% or
+/-0.3mm
12.7≤D<38.1+/-0.1348.3<D≤114.3+0.80/-0.80
whichever is the greater
38.1≤D<88.9+/-0.25114.3<D≤219.1+1.60/-0.80D4+/-0.5% or
+/-0.1mm
88.9≤D<139.7+/-0.38219.1<D≤457.0+2.40/-0.80
whichever is the greater



W.T. Tolerance
(mm)

O.D.W.T.ToleranceO.D.W.T.ToleranceW.T. Tolerance Class
D<12.7+/-15%10.3≤D≤73.0+20.0%/-12.5%T3+/-10% or
+/-0.2mm
12.7≤D<38.1+/-10%
88.9≤D≤457.0
t/D ≤5%		+22.5%/-12.5%whichever is the greater
38.1≤D<88.9+/-10%T4+/-7.5% or
+/-0.15mm
88.9≤D≤457.0
t/D >5%		+15.0%/-12.5%
88.9≤D<139.7+/-10%
whichever is the greater


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