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STAINLESS STEEL BUTTWELD FITTINGS Buttweld Fittings

Specification of Stainless Steel Buttweld Fittings

GradesStainless Steel 303/304/ 304L/ 304H/316/ 316L/ 317/ 317L/ 321/ 310/ 347/ 904L
SpecificationsASTM A403 / ASME SA403
Size½" NB - 48" NB
ScheduleSCH 5 TO SCH XXS.
FormSeamless / ERW / Welded / Fabricated

Chemical Composition of Stainless Steel Buttweld Fittings

ClassificationSpecification Chemical Composition         other 
 JISAISICSiMnPSNiCrMoCuN  
Martensitic GradesSUS403403Max.0.15Max.0.50Max.1.00Max.0.040Max.0.030-111.50~13.00---- 
 SUS410410Max.0.15Max.1.00Max.1.00Max.0.040Max.0.030-111.50~13.50---- 
 SUS410J1-0.08~0.18Max.0.60Max.1.00Max.0.040Max.0.030-111.50~14.000.30~0.60--- 
 SUS410F2-Max.0.15Max.1.00Max.1.00Max.0.040Max.0.030-111.50~13.50---Pb 0.05˜0.30 
 SUS416416Max.0.15Max.1.00Max.1.25Max.0.060Min.0.15-112.00~14.00-2--- 
 SUS420J14200.16~0.25Max.1.00Max.1.00Max.0.040Max.0.030-112.00~14.00---- 
 SUS420J24200.26~0.40Max.1.00Max.1.00Max.0.040Max.0.030-112.00~14.00---- 
 SUS420F420F0.26~0.40Max.1.00Max.1.25Max.0.060Min.0.15-112.00~14.00-2--- 
 SUS420F2-0.26~0.40Max.1.00Max.1.00Max.0.040Max.0.030-112.00~14.00---Pb 0.05~0.30 
 SUS431431Max.0.20Max.1.00Max.1.00Max.0.040Max.0.0301.25~2.5015.00~17.00---- 
 SUS440A440A0.60~0.75Max.1.00Max.1.00Max.0.040Max.0.030-116.00~18.00-3--- 
 SUS440B440B0.75~0.95Max.1.00Max.1.00Max.0.040Max.0.030-116.00~18.00-3--- 
 SUS440C440C0.95~1.20Max.1.00Max.1.00Max.0.040Max.0.030-116.00~18.00-3--- 
 SUS440FS440200.95~1.20Max.1.00Max.1.25Max.0.060Min.0.15-116.00~18.00-3--- 
Ferritic GradesSUS405405Max.0.08Max.1.00Max.1.00Max.0.040Max.0.030-11.50~14.50---Al 0.10~0.30 
 SUS410L-Max.0.03Max.1.00Max.1.00Max.0.040Max.0.030-11.00~13.50---- 
 SUS430430Max.0.12Max.0.75Max.1.00Max.0.040Max.0.030-16.00~18.00---- 
 SUS430F430FMax.0.12Max.1.00Max.1.25Max.0.060Min.0.15-16.00~18.00-2--- 
 SUS434434Max.0.12Max.1.00Max.1.00Max.0.040Max.0.030-16.00~18.000.75~1.25--- 
 SUS447J1-Max.0.01Max.0.40Max.0.40Max.0.030Max.0.020-28.50~32.001.50~2.50-Max.0.015- 
 SUSXM27-Max.0.01Max.0.40Max.0.40Max.0.030Max.0.020-25.00~27.500.75~1.50-Max.0.015- 
Austenitic Ferritic GradesSUS329J1329Max.0.08Max.1.00Max.1.50Max.0.040Max.0.0303.00~6.0023.00~28.001.00~3.00--- 
 SUS329J3LS31803Max.0.03Max.1.00Max.2.00Max.0.040Max.0.0304.50~6.5021.00~24.002.50~3.50-0.08~0.20- 
 SUS329J4LS31260Max.0.03Max.1.00Max.1.50Max.0.040Max.0.0305.50~7.5024.00~26.002.50~3.50-0.08~0.30- 
Austenitic GradesSUS201201Max.0.15Max.1.005.50~7.50Max.0.060Max.0.0303.50~5.5016.00~18.00--0.25??- 
 SUS202202Max.0.15Max.1.007.50~10.00Max.0.060Max.0.0304.00~6.0017.00~19.00--Max.0.25- 
 SUS301301Max.0.15Max.1.00Max.2.00Max.0.045Max.0.0306.00~8.0016.00~18.00---- 
 SUS302302Max.0.15Max.1.00Max.2.00Max.0.045Max.0.0308.00~10.0017.00~19.00---- 
 SUS303303Max.0.15Max.1.00Max.2.00Max.0.200Min.0.158.00~10.0017.00~19.00-2--- 
 SUS303Se303SeMax.0.15Max.1.00Max.2.00Max.0.200Max.0.0608.00~10.0017.00~19.00---Se Min.0.15 
 SUS303Cu-Max.0.15Max.1.00Max.3.00Max.0.200Min.0.158.00~10.0017.00~19.00-21.50~3.50-- 
 SUS304304Max.0.08Max.1.00Max.2.00Max.0.045Max.0.0308.00~10.5018.00~20.00---- 
 SUS304L304LMax.0.03Max.1.00Max.2.00Max.0.045Max.0.0309.00~13.0018.00~20.00---- 
 SUS304N1304NMax.0.08Max.1.00Max.2.50Max.0.045Max.0.0307.00~10.5018.00~20.00--0.10~0.25- 
 SUS304N2-Max.0.08Max.1.00Max.2.50Max.0.045Max.0.0307.50~10.5018.00~20.00--0.15~0.30Nb Max.0.15 
 SUS304LN304LNMax.0.03Max.1.00Max.2.00Max.0.045Max.0.0308.50~11.5017.00~19.00--0.12~0.22- 
 SUS304J3-Max.0.08Max.1.00Max.2.00Max.0.045Max.0.0308.00~10.5017.00~19.00-1.00~3.00-- 
 SUS305305Max.0.12Max.1.00Max.2.00Max.0.045Max.0.03010.50~13.0017.00~19.00---- 
 SUS309S309SMax.0.08Max.1.00Max.2.00Max.0.045Max.0.03012.00~15.0022.00~24.00---- 
 SUS310S310SMax.0.08Max.1.50Max.2.00Max.0.045Max.0.03019.00~22.0024.00~26.00---- 
 SUS316316Max.0.08Max.1.00Max.2.00Max.0.045Max.0.03010.00~14.0016.00~18.002.00~3.00--- 
 SUS316L316LMax.0.03Max.1.00Max.2.00Max.0.045Max.0.03012.00~15.0016.00~18.002.00~3.00--- 
 SUS316N316NMax.0.08Max.1.00Max.2.00Max.0.045Max.0.03010.00~14.0016.00~18.002.00~3.00-0.10~0.22- 
 SUS316LN316LNMax.0.03Max.1.00Max.2.00Max.0.045Max.0.03010.50~14.5016.50~18.502.00~3.00-0.12~0.22- 
 SUS316Ti-Max.0.08Max.1.00Max.2.00Max.0.045Max.0.03010.00~14.0016.00~18.002.00~3.00--Ti Min.5xC% 
 SUS316J1-Max.0.08Max.1.00Max.2.00Max.0.045Max.0.03010.00~14.0017.00~19.001.20~2.751.00~2.50-- 
 SUS316J1L-Max.0.03Max.1.00Max.2.00Max.0.045Max.0.03012.00~16.0017.00~19.001.20~2.751.00~2.50-- 
 SUS316F-Max.0.08Max.1.00Max.2.00Max.0.045Min.0.1010.00~14.0016.00~18.002.00~3.00--- 
 SUS317317Max.0.08Max.1.00Max.2.00Max.0.045Max.0.03011.00~15.0018.00~20.003.00~4.00--- 
 SUS317L317LMax.0.03Max.1.00Max.2.00Max.0.045Max.0.03011.00~15.0018.00~20.003.00~4.00--- 
 SUS317LN-Max.0.03Max.1.00Max.2.00Max.0.045Max.0.03011.00~15.0018.00~20.003.00~4.00-0.10~0.22- 
 SUS317J1-Max.0.04Max.1.00Max.2.50Max.0.045Max.0.03015.00~17.0016.00~19.004.00~6.00--- 
 SUS836L-Max.0.03Max.1.00Max.2.00Max.0.045Max.0.03024.00~26.0019.00~24.005.00~7.00-Max.0.25- 
 SUS890L-Max.0.02Max.1.00Max.2.00Max.0.045Max.0.03023.00~28.0019.00~23.004.00~5.001.00~2.00-- 
 SUS321321Max.0.08Max.1.00Max.2.00Max.0.045Max.0.0309.00~13.0017.00~19.00---Ti Min.5xC% 
 SUS347347Max.0.08Max.1.00Max.2.00Max.0.045Max.0.0309.00~13.0017.00~19.00---Nb Min.10xC% 
 SUSXM7304CuMax.0.08Max.1.00Max.2.00Max.0.045Max.0.0308.50~10.5017.00~19.00-3.00~4.00-- 
 SUSXM15J1-Max.0.083.00~5.00Max.2.00Max.0.045Max.0.03011.50~15.0015.00~20.00---- 
Precipitation Hardening GradesSUS630S17400Max.0.07Max.1.00Max.1.00Max.0.040Max.0.0303.00~5.0015.00~17.50-3.00~5.00-Nb 0.15~0.45 
 SUS631S17700Max.0.09Max.1.00Max.1.00Max.0.040Max.0.0306.50~7.7516.00~18.00---Al 0.75~1.50

Mechanical Properties of Stainless Steel Buttweld Fittings

TypeUNSTensileYieldElongationHardnessHardness
  (ksi) min(ksi) minmin(Brinell) max(Rockwell B) max
302S30200753040% in 2"18388
304*S30400753040% in 2"18388
304L*S30403703040% in 2"18388
309S30900753040% in 2"21795
       
309SS30908753040% in 2"21795
310S31000753040% in 2"21795
310SS31008753040% in 2"21795
316*S31600753040% in 2"21795
       
316L*S31603702535% in 2"21795
317S31700753035% in 2"21795
317LS31703753035% in 2"21795
321S32100753040% in 2"18388
       
347S34700753040% in 2"18388
410*S41000653020% in 2"21795
410SS41008603022% in 2"18388
416S41600754030-25% in 2" -82
420S42000956030-25% in 2" -92
       
430S43000653022% in 2"18388
440CS44004 - -

Types of Stainless Steel Buttweld Fittings

Stainless Steel ReducersStainless Steel Concentric ReducersStainless Steel Tees
Stainless Steel WeldoletStainless Steel Short Stub EndStainless Steel Eccentric Reducers
Stainless Steel ElbowsStainless Steel 3D ElbowStainless Steel Lap Joint Stub End
Stainless Steel End CapsStainless Steel 5D ElbowStainless Steel 180° SR Return Bends
Stainless Steel ElbowsStainless Steel Short Radius ElbowStainless Steel 45° Elbows
Stainless Steel Reducing ElbowStainless Steel Long Radius ElbowStainless Steel 180° LR Return Bends
Stainless Steel 45° ElbowsStainless Steel Equal TeeStainless Steel UnEqual Tee
Stainless Steel Reducing TeeStainless Steel 1D ElbowStainless Steel 1.5D Elbow
Stainless Steel Long Stub EndsStainless Steel 2D ElbowStainless Steel 6D Elbow

CARBON STEEL BUTTWELD FITTINGS Buttweld Fittings

Specification of Carbon Steel Buttweld Fittings

GradesCarbon Steel WPB, WPL3 ,WPL6 , WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70
DimensionANSI/ASME B16.9, B16.28, MSS-SP-43
SpecificationsASTM/ASME A/ SA 234 / 860 / 420 , MSS-SP-75 WPHY
Size½" NB - 48″ NB
ScheduleSCH 10 - SCH XXS
FormSeamless / ERW / Welded / Fabricated
CertificationIBR & NON IBR
Additional TestingNACE MR0175 , NACE TM0284 , HIC TEST , H2 SERVICE , ETC

Types of Carbon Steel Buttweld Fittings

Carbon Steel ReducersCarbon Steel Concentric ReducersCarbon Steel Tees
Carbon Steel WeldoletCarbon Steel Short Stub EndCarbon Steel Eccentric Reducers
Carbon Steel ElbowsCarbon Steel 3D ElbowCarbon Steel Lap Joint Stub End
Carbon Steel End CapsCarbon Steel 5D ElbowCarbon Steel 180° SR Return Bends
Carbon Steel ElbowsCarbon Steel Short Radius ElbowCarbon Steel 45° Elbows
Carbon Steel Reducing ElbowCarbon Steel Long Radius ElbowCarbon Steel 180° LR Return Bends
Carbon Steel 45° ElbowsCarbon Steel Equal TeeCarbon Steel UnEqual Tee
Carbon Steel Reducing TeeCarbon Steel 1D ElbowCarbon Steel 1.5D Elbow
Carbon Steel Long Stub EndsCarbon Steel 2D ElbowCarbon Steel 6D Elbow

MONEL BUTTWELD FITTINGS Buttweld Fittings

Specification of Monel Alloy Buttweld Fittings

GradesMonel 400 (UNS No. N04400)/Monel K500 (UNS No. N05500)
DimensionANSI/ASME B16.9, B16.28, MSS-SP-43.
SpecificationsASTM B 366 / ASME SB 366
Size½" NB - 48" NB
ScheduleSCH 5 TO SCH XXS.
FormSeamless / ERW / Welded / Fabricated

Chemical Composition of Monel Alloy Buttweld Fittings

GradeNiFeCMnSiCuAlTiS
K50063.0 min02-May0.25 max1.5 max0.5 max27.0 - 33.02.3 - 3.150.35 - 0.850.010 max
40063.0- 70.00 max2.50 max0.3 max2.00 max0.50 maxRemainder--0.024 max

Mechanical Properties of Monel Alloy Buttweld Fittings

GradeTensile (ksi).2% Yield (ksi)Elongation %Hardness (HRb)
40075 to 9025 to 5060 to 3560 to 80
K500Psi - 1,60,000 , MPa - 1100Psi - 1,15,000 , MPa - 79020%-

Types of Monel Alloy Buttweld Fittings

Monel Alloy ReducersMonel Alloy Concentric ReducersMonel Alloy Tees
Monel Alloy WeldoletMonel Alloy Short Stub EndMonel Alloy Eccentric Reducers
Monel Alloy ElbowsMonel Alloy 3D ElbowMonel Alloy Lap Joint Stub End
Monel Alloy End CapsMonel Alloy 5D ElbowMonel Alloy 180° SR Return Bends
Monel Alloy ElbowsMonel Alloy Short Radius ElbowMonel Alloy 45° Elbows
Monel Alloy Reducing ElbowMonel Alloy Long Radius ElbowMonel Alloy 180° LR Return Bends
Monel Alloy 45° ElbowsMonel Alloy Equal TeeMonel Alloy UnEqual Tee
Monel Alloy Reducing TeeMonel Alloy 1D ElbowMonel Alloy 1.5D Elbow
Monel Alloy Long Stub EndsMonel Alloy 2D ElbowMonel Alloy 6D Elbow

NICKEL ALLOY BUTTWELD FITTINGS Buttweld Fittings

Specification of Nickel Alloy Buttweld Fittings

GradesNickel Alloy 200 (UNS No. N02200), Nickel Alloy 201 (UNS No. N02201)
DimensionANSI/ASME B16.9, B16.28, MSS-SP-43.
SpecificationsASTM B 366 / ASME SB 366
Size½" NB - 48" NB
ScheduleSCH 5 TO SCH XXS.
FormSeamless / ERW / Welded / Fabricated

Chemical Composition of Nickel Alloy Buttweld Fittings

Material / Purity:Alloy 200Alloy 201
Ni9999
Fe0.40.4
Mn0.350.35
Si0.350.35
C0.150.02
S0.010.01
Cu0.250.25

Mechanical Properties of Nickel Alloy Buttweld Fittings

Nickel Alloy 201  
PropertiesMetricImperial
Tensile strength (annealed)403 MPa58500 psi
Yield strength (annealed)103 MPa14900 psi
Elongation at break (annealed prior to test)50%50%
Nickel Alloy 200  
PropertiesMetricImperial
Tensile strength (annealed)462 MPa67000 psi
Yield strength (annealed)148 MPa21500 psi
Elongation at break (annealed prior to test)45%45%

Types of Nickel Alloy Buttweld Fittings

Nickel Alloy ReducersNickel Alloy Concentric ReducersNickel Alloy Tees
Nickel Alloy WeldoletNickel Alloy Short Stub EndNickel Alloy Eccentric Reducers
Nickel Alloy ElbowsNickel Alloy 3D ElbowNickel Alloy Lap Joint Stub End
Nickel Alloy End CapsNickel Alloy 5D ElbowNickel Alloy 180° SR Return Bends
Nickel Alloy ElbowsNickel Alloy Short Radius ElbowNickel Alloy 45° Elbows
Nickel Alloy Reducing ElbowNickel Alloy Long Radius ElbowNickel Alloy 180° LR Return Bends
Nickel Alloy 45° ElbowsNickel Alloy Equal TeeNickel Alloy UnEqual Tee
Nickel Alloy Reducing TeeNickel Alloy 1D ElbowNickel Alloy 1.5D Elbow
Nickel Alloy Long Stub EndsNickel Alloy 2D ElbowNickel Alloy 6D Elbow

INCONEL ALLOY BUTTWELD FITTINGS Buttweld Fittings

Specification of Inconel Alloy Buttweld Fittings

GradesInconel 600 (UNS N06600), Inconel 601(UNS N06601), Inconel 625 (UNS N06625), Inconel 718 (UNS NO7718)
SpecificationsASTM B 366 / ASME SB 366
Size½" NB - 48" NB
ScheduleSCH 5 TO SCH XXS.
FormSeamless / ERW / Welded / Fabricated

Chemical Composition of Inconel Alloy Buttweld Fittings

GradeNiFeCMnSiCuCrSMoCoAlTiPNb/CbTa
60072.0 min6.0 - 10.00.15 max1.0 max0.5 max0.5 max14.0 - 17.00.015 max-------
60158.0 - 63.0Balance0.10 max1.0 max0.50 max1.0 max21.0 - 25.00.015 max8.0-10.0-1.0 - 1.7----
62558.0 min50.10 max0.50 max0.50 max0.5 max20.0 - 23.00.015 max8.00 - 10.0010.40.40.0153.15 - 4.150.05
71850.00-55.00Remainder0.08 max0.35 max0.35 max0.30 max max17.00-21.000.015 max2.80-3.3011.00 max0.65-1.150.015 max4.75-5.50-

Mechanical Properties of Inconel Alloy 600/601 Buttweld Fittings

GradeTensile (psi).2% Yield (psi)Elongation (%)
60095,00045,00040
60180,00030,00035

Mechanical Properties of Inconel Alloy 625 Buttweld Fittings

Temp° FTensile (psi).2% Yield (psi)Elongation in 2 " (%)
70144,00084,00044
400134,00066,00045
600132,00063,00042.5
800131,50061,00045
1000130,00060,50048
1200119,00060,00034
140078,00058,50059
160040,00039,000117

Mechanical Properties of Inconel Alloy 718 Buttweld Fittings

Ultimate Tensile Strength, psi.2% Yield Strength psiElongation %Hardness Rockwell B
135,00070,00045100

Types of Inconel Alloy Buttweld Fittings

Inconel Alloy ReducersInconel Alloy Concentric ReducersInconel Alloy Tees
Inconel Alloy WeldoletInconel Alloy Short Stub EndInconel Alloy Eccentric Reducers
Inconel Alloy ElbowsInconel Alloy 3D ElbowInconel Alloy Lap Joint Stub End
Inconel Alloy End CapsInconel Alloy 5D ElbowInconel Alloy 180° SR Return Bends
Inconel Alloy ElbowsInconel Alloy Short Radius ElbowInconel Alloy 45° Elbows
Inconel Alloy Reducing ElbowInconel Alloy Long Radius ElbowInconel Alloy 180° LR Return Bends
Inconel Alloy 45° ElbowsInconel Alloy Equal TeeInconel Alloy UnEqual Tee
Inconel Alloy Reducing TeeInconel Alloy 1D ElbowInconel Alloy 1.5D Elbow
Inconel Alloy Long Stub EndsInconel Alloy 2D ElbowInconel Alloy 6D Elbow

INCOLOY ALLOY BUTTWELD FITTINGS Buttweld Fittings

Specification of Incoloy Alloy Buttweld Fittings

GradesIncoloy 800 (UNS N08800), Incoloy 800H (UNS N08810), Incoloy 800HT (UNS N08811), Incoloy 825(UNS N08825)
DimensionASTM, ASME ANSI B16.9, B16.28, MSS-SP-43.
SpecificationsASTM B 366 / ASME SB 366
Size½" NB - 48" NB
ScheduleSCH 5 TO SCH XXS.
FormSeamless / ERW / Welded / Fabricated

Chemical Composition of Incoloy Alloy Buttweld Fittings

Incoloy800800H825
Ni30-3530-3538.0 - 46.0
Fe39.5 min39.5 min22.0 min
Cr19-2319-2319.5 - 23.5
Cu0.75 max0.75 max1.5 - 3.0
Ti0.15-0.600.15-0.600.6 - 1.2
Al0.15-0.600.15-0.600.2 max
C0.1 max0.05-0.10.05 max
Mn1.5 max1.5 max1.0 max
S0.015 max0.015 max0.015 max
Si1.0 max1.0 max0.5 max
Mb--2.5 - 3.5

Mechanical Properties of Incoloy Alloy Buttweld Fittings

Inconel 800/800HT 
Tensile StrengthPsi â€" 75,000 , MPa â€" 520
Yield Strength (0.2%Offset)Psi â€" 30,000 , MPa â€"205
Elongation30%
Inconel 825 
Tensile StrengthPsi - 80,000 , MPa - 550
Yield Strength (0.2%Offset)Psi - 32,000 , MPa -220
Elongation30%

Types of Incoloy Alloy Buttweld Fittings

Incoloy Alloy ReducersIncoloy Alloy Concentric ReducersIncoloy Alloy Tees
Incoloy Alloy WeldoletIncoloy Alloy Short Stub EndIncoloy Alloy Eccentric Reducers
Incoloy Alloy ElbowsIncoloy Alloy 3D ElbowIncoloy Alloy Lap Joint Stub End
Incoloy Alloy End CapsIncoloy Alloy 5D ElbowIncoloy Alloy 180° SR Return Bends
Incoloy Alloy ElbowsIncoloy Alloy Short Radius ElbowIncoloy Alloy 45° Elbows
Incoloy Alloy Reducing ElbowIncoloy Alloy Long Radius ElbowIncoloy Alloy 180° LR Return Bends
Incoloy Alloy 45° ElbowsIncoloy Alloy Equal TeeIncoloy Alloy UnEqual Tee
Incoloy Alloy Reducing TeeIncoloy Alloy 1D ElbowIncoloy Alloy 1.5D Elbow
Incoloy Alloy Long Stub EndsIncoloy Alloy 2D ElbowIncoloy Alloy 6D Elbow

HASTELLOY BUTTWELD FITTINGS Buttweld Fittings

Specification of Hastelloy Buttweld Fittings

GradesHastelloy C22 (UNS No. N06022), Hastelloy C276 (UNS N10276)
SpecificationsASTM B 366 / ASME SB 366
Size½" NB - 48" NB
ScheduleSCH 5 TO SCH XXS.
FormSeamless / ERW / Welded / Fabricated

Chemical Composition of Hastelloy Buttweld Fittings

GradeCMnSiSCoNiCrFeMoP
C2760.010 max1.00 max0.08 max0.03 max2.50 max50.99 min*14.50 - 16.504.00 - 7.0015.00 - 17.000.04 max
C220.010 max0.50 max0.08 max0.02 max2.50 max50.015 min*20.00 - 22.502.00 - 6.0012.50 - 14.500.02 max

Mechanical Properties of Hastelloy Buttweld Fittings

ElementDensityMelting PointTensile StrengthYield Strength (0.2%Offset)Elongation
Hastelloy C2768.89 g/cm31370 °C (2500 °F)Psi - 1,15,000 , MPa - 790Psi - 52,000 , MPa - 35540%
Hastelloy C228.69 g/cm31399 °C (2550 °F)Psi - 1,00,000 , MPa - 690Psi - 45000 , MPa - 31045%

Types of Hastelloy Buttweld Fittings

Hastelloy ReducersHastelloy Concentric ReducersHastelloy Tees
Hastelloy WeldoletHastelloy Short Stub EndHastelloy Eccentric Reducers
Hastelloy ElbowsHastelloy 3D ElbowHastelloy Lap Joint Stub End
Hastelloy End CapsHastelloy 5D ElbowHastelloy 180° SR Return Bends
Hastelloy ElbowsHastelloy Short Radius ElbowHastelloy 45° Elbows
Hastelloy Reducing ElbowHastelloy Long Radius ElbowHastelloy 180° LR Return Bends
Hastelloy 45° ElbowsHastelloy Equal TeeHastelloy UnEqual Tee
Hastelloy Reducing TeeHastelloy 1D ElbowHastelloy 1.5D Elbow
Hastelloy Long Stub EndsHastelloy 2D ElbowHastelloy 6D Elbow

COPPER NICKEL BUTTWELD FITTINGS Buttweld Fittings

Specification of Copper Nickel Alloy Buttweld Fittings

GradesCU-NI-70/30 (UNS No C71500) / CU-NI-90/10 (UNS No C70600)
DimensionANSI/ASME B16.9, B16.28, MSS-SP-43
SpecificationsASTM B122, B171, B466, B467
Size½" NB - 48″ NB
ScheduleSCH 10 - SCH XXS
FormSeamless / ERW / Welded / Fabricated

Chemical Composition of Copper Nickel Alloy Buttweld Fittings

GradeCuMnPbNiFeZn
Cu-Ni 90-1088.6 min1.0 max.05 max9-11 max1.8 max1 max
Cu-Ni 70-3065.0 min1 max.05 max29-330.4-1.01 max

Mechanical Properties of Copper Nickel Alloy Buttweld Fittings

ElementDensityMelting PointTensile StrengthYield Strength (0.2%Offset)Elongation
Copper Nickel 90-10 / 70-300.323 lb/in3 at 68 F2260 F50000 psi20000 psi30%

Types of Copper Nickel Alloy Buttweld Fittings

Copper Nickel Alloy ReducersCopper Nickel Alloy Concentric ReducersCopper Nickel Alloy Tees
Copper Nickel Alloy WeldoletCopper Nickel Alloy Short Stub EndCopper Nickel Alloy Eccentric Reducers
Copper Nickel Alloy ElbowsCopper Nickel Alloy 3D ElbowCopper Nickel Alloy Lap Joint Stub End
Copper Nickel Alloy End CapsCopper Nickel Alloy 5D ElbowCopper Nickel Alloy 180° SR Return Bends
Copper Nickel Alloy ElbowsCopper Nickel Alloy Short Radius ElbowCopper Nickel Alloy 45° Elbows
Copper Nickel Alloy Reducing ElbowCopper Nickel Alloy Long Radius ElbowCopper Nickel Alloy 180° LR Return Bends
Copper Nickel Alloy 45° ElbowsCopper Nickel Alloy Equal TeeCopper Nickel Alloy UnEqual Tee
Copper Nickel Alloy Reducing TeeCopper Nickel Alloy 1D ElbowCopper Nickel Alloy 1.5D Elbow
Copper Nickel Alloy Long Stub EndsCopper Nickel Alloy 2D ElbowCopper Nickel Alloy 6D Elbow

ALLOY STEEL FORGED FITTINGS Buttweld Fittings

Specification of Alloy Steel Buttweld Fittings

GradesAlloy Steel WP1, WP5, WP9, WP11, WP12, WP22, WP91, WP92
DimensionANSI/ASME B16.9, B16.28, MSS-SP-43
SpecificationsASTM A234 / ASME SA234
Size½" NB - 48″ NB
ScheduleSCH 10 - SCH XXS
FormSeamless / ERW / Welded / Fabricated
CertificationIBR & NON IBR
Additional TestingNACE MR0175 , NACE TM0284 , HIC TEST , H2 SERVICE , ETC

Chemical Composition of Alloy Steel Buttweld Fittings

GradeCMnSiSPCrMo
A182 F50.150.3 - 0.60.50.030.0306-Apr0.044 - 0.65
A182 F90.150.3 - 0.60.5 - 10.030.0310-Aug0.9 - 1.1
A182 F110.05 - 0.150.3 - 0.60.5 - 10.030.031 - 1.50.044 - 0.65
A182 F220.05 - 0.150.3 - 0.60.50.030.0450.8 - 1.250.044 - 0.65
A182 F910.08 - 0.120.3 - 0.60.50.010.028.5 - 9.50.85 - 1.05

Mechanical Properties of Alloy Steel Buttweld Fittings

GradeTensile Strength (Mpa)Yield Strength (Mpa)Elongation %
A182 F527548520
A182 F538058520
A182 F1120541520
A182 F1227548520
A182 F520541520
A182 F9141558520

Types of Alloy Steel Buttweld Fittings

Alloy Steel ReducersAlloy Steel Concentric ReducersAlloy Steel Tees
Alloy Steel WeldoletAlloy Steel Short Stub EndAlloy Steel Eccentric Reducers
Alloy Steel ElbowsAlloy Steel 3D ElbowAlloy Steel Lap Joint Stub End
Alloy Steel End CapsAlloy Steel 5D ElbowAlloy Steel 180° SR Return Bends
Alloy Steel ElbowsAlloy Steel Short Radius ElbowAlloy Steel 45° Elbows
Alloy Steel Reducing ElbowAlloy Steel Long Radius ElbowAlloy Steel 180° LR Return Bends
Alloy Steel 45° ElbowsAlloy Steel Equal TeeAlloy Steel UnEqual Tee
Alloy Steel Reducing TeeAlloy Steel 1D ElbowAlloy Steel 1.5D Elbow
Alloy Steel Long Stub EndsAlloy Steel 2D ElbowAlloy Steel 6D Elbow

ALLOY 20 BUTTWELD FITTINGS Buttweld Fittings

Specification of Alloy 20 Buttweld Fittings

GradesAlloy 20 (UNS N08020)
SpecificationsASTM B 366 / ASME SB 366
Size½" NB - 48" NB
ScheduleSCH 5 TO SCH XXS.
FormSeamless / ERW / Welded / Fabricated

Chemical Composition of Alloy 20 Buttweld Fittings

NiFeCMnSiCuCrMoSPNb
32 - 38Bal0.02 max02-Jan0.7 max04-Mar19 - 2103-Feb0.005 max0.02 max0.1 - 0.3

Mechanical Properties of Alloy 20 Buttweld Fittings

DensityMelting PointTensile StrengthYield Strength (0.2%Offset)Elongation
8.1 g/cm31443 °C (2430 °F)Psi -80,000, MPa -551Psi - 35,000, MPa - 24130%

DUPLEX STEEL BUTTWELD FITTINGS Buttweld Fittings

Specification of Duplex Steel UNS S31803 / F51 Buttweld Fittings

GradesDuplex Stainless 2205 (UNS N0 S31803 / S32205) / F51
DimensionANSI/ASME B16.9, B16.28, MSS-SP-43
SpecificationsASTM / ASME A815 / SA815
Size½" NB - 48" NB
ScheduleSCH 5 TO SCH XXS.
FormSeamless / ERW / Welded / Fabricated

Chemical Composition of Duplex Steel F51 Buttweld Fittings

GradeNiCrNCMnPSSiMo
Duplex Steel4.5 - 6.522 - 230.14 - 0.20.030 max2.0 max0.030 max0.02 max1 max3 - 3.5

Mechanical Properties of Duplex Steel F51 Buttweld Fittings

DensityMelting PointTensile StrengthYield Strength (0.2%Offset)Elongation
7.8 g/cm31440 °C (2625 °F)Psi - 90000 , MPa - 620Psi - 65000 , MPa - 45030%

Types of Duplex Steel UNS S31803 / F51 Buttweld Fittings

Duplex Steel ReducersDuplex Steel Concentric ReducersDuplex Steel Tees
Duplex Steel WeldoletDuplex Steel Short Stub EndDuplex Steel Eccentric Reducers
Duplex Steel ElbowsDuplex Steel 3D ElbowDuplex Steel Lap Joint Stub End
Duplex Steel End CapsDuplex Steel 5D ElbowDuplex Steel 180° SR Return Bends
Duplex Steel ElbowsDuplex Steel Short Radius ElbowDuplex Steel 45° Elbows
Duplex Steel Reducing ElbowDuplex Steel Long Radius ElbowDuplex Steel 180° LR Return Bends
Duplex Steel 45° ElbowsDuplex Steel Equal TeeDuplex Steel UnEqual Tee
Duplex Steel Reducing TeeDuplex Steel 1D ElbowDuplex Steel 1.5D Elbow
Duplex Steel Long Stub EndsDuplex Steel 2D ElbowDuplex Steel 6D Elbow

SUPER DUPLEX STEEL BUTTWELD FITTINGS Buttweld Fittings

Specification of Super Duplex Steel 2507 Buttweld Fittings

GradesSuper Duplex Steel 2507 (UNS S32507)
DimensionANSI/ASME B16.9, B16.28, MSS-SP-43
SpecificationsASTM / ASME A815 / SA815
Size½" NB - 48" NB
ScheduleSCH 5 TO SCH XXS.
FormSeamless / ERW / Welded / Fabricated

Chemical Composition of Super Duplex F53 Steel Buttweld Fittings

GradeCNiCrCuFeNMnSiSMoP
Super Duplex S327500.030 max6 - 824 - 260.50 maxBalance0.24 - 0.321.20 max0.80 max0.020 max3 - 50.035 max

Mechanical Properties of Super Duplex F53 Steel Buttweld Fittings

DensityMelting PointTensile StrengthYield Strength (0.2%Offset)Elongation
7.8 g/cm31350 °C (2460 °F)Psi - 116000 , MPa - 800Psi - 80000 , MPa - 55015%

Types of Super Duplex Steel 2507 Buttweld Fittings

Super Duplex Steel ReducersSuper Duplex Steel Concentric ReducersSuper Duplex Steel Tees
Super Duplex Steel WeldoletSuper Duplex Steel Short Stub EndSuper Duplex Steel Eccentric Reducers
Super Duplex Steel ElbowsSuper Duplex Steel 3D ElbowSuper Duplex Steel Lap Joint Stub End
Super Duplex Steel End CapsSuper Duplex Steel 5D ElbowSuper Duplex Steel 180° SR Return Bends
Super Duplex Steel ElbowsSuper Duplex Steel Short Radius ElbowSuper Duplex Steel 45° Elbows
Super Duplex Steel Reducing ElbowSuper Duplex Steel Long Radius ElbowSuper Duplex Steel 180° LR Return Bends
Super Duplex Steel 45° ElbowsSuper Duplex Steel Equal TeeSuper Duplex Steel UnEqual Tee
Super Duplex Steel Reducing TeeSuper Duplex Steel 1D ElbowSuper Duplex Steel 1.5D Elbow
Super Duplex Steel Long Stub EndsSuper Duplex Steel 2D ElbowSuper Duplex Steel 6D Elbow

TITANIUM BUTTWELD FITTINGS Buttweld Fittings

Specification of Titanium Alloys Buttweld Fittings

GradesTitanium GR-1 (UNS R50250), Titanium Grade 2 (UNS No. R50400), Titanium Grade 5 (UNS No. R56400), Titanium Grade 9 (UNS No. R56320)
SpecificationsASTM B 363 / ASME SB 363
Size½" NB - 48" NB
ScheduleSCH 5 TO SCH XXS.
FormSeamless / ERW / Welded / Fabricated

Chemical Composition of Titanium Alloys Buttweld Fittings

Typical corresponding standardChemical composition(wt%)        
 NCHFeOAlVTiOther elements
JIS Class 1≦0.03≦0.08≦0.013≦0.20≦0.15--Bal 
ASTM Grade 1≦0.03≦0.08≦0.015≦0.20≦0.18--Bal 
DIN3.7025≦0.03≦0.06≦0.013≦0.15≦0.12--Bal 
JIS Class 2≦0.03≦0.08≦0.013≦0.25≦0.20--Bal 
ASTM Grade 2≦0.03≦0.08≦0.015≦0.30≦0.25--Bal 
DIN3.7035≦0.05≦0.06≦0.013≦0.20≦0.18--Bal 
JIS Class 3≦0.05≦0.08≦0.013≦0.30≦0.30--Bal 
ASTM Grade 3≦0.05≦0.08≦0.015≦0.30≦0.35--Bal 
DIN3.7055≦0.05≦0.06≦0.013≦0.25≦0.25--Bal 
JIS Class 4≦0.05≦0.08≦0.013≦0.50≦0.40--Bal 
ASTM Grade 4≦0.05≦0.08≦0.015≦0.50≦0.40--Bal 
DIN3.7065≦0.05≦0.06≦0.013≦0.30≦0.35--Bal

Mechanical Properties of Titanium Alloys Buttweld Fittings

Typical corresponding standardTensile strength0.2% Yield strengthElongationReduction of area180° bendingHardnessHeat treatment condition
 (N/mm2)(N/mm2)(%)(%)(inner redius)(HB) 
JIS Class 1270~410≧165≧27-2T≧100Annealing
ASTM Grade 1≧240≧170≧24≧30--Annealing
DIN3.7025290~410≧180≧30---Annealing
JIS Class 2340~510≧210≧23-2T≧100Annealing
ASTM Grade 2≧345≧275≧20≧30--Annealing
DIN3.7035390~540≧250≧22---Annealing
JIS Class 3480~620≧345≧18-3T≧150Annealing
ASTM Grade 3≧450≧380≧18≧30--Annealing
DIN3.7055460~590≧320≧18---Annealing
JIS Class 4550~750≧485≧15-3T≧180Annealing
ASTM Grade 4≧550≧483≧15≧25--Annealing
DIN3.7065540~740≧390≧16---Annealing

Types of Titanium Alloys Buttweld Fittings

Titanium Alloys ReducersTitanium Alloys Concentric ReducersTitanium Alloys Tees
Titanium Alloys WeldoletTitanium Alloys Short Stub EndTitanium Alloys Eccentric Reducers
Titanium Alloys ElbowsTitanium Alloys 3D ElbowTitanium Alloys Lap Joint Stub End
Titanium Alloys End CapsTitanium Alloys 5D ElbowTitanium Alloys 180° SR Return Bends
Titanium Alloys ElbowsTitanium Alloys Short Radius ElbowTitanium Alloys 45° Elbows
Titanium Alloys Reducing ElbowTitanium Alloys Long Radius ElbowTitanium Alloys 180° LR Return Bends
Titanium Alloys 45° ElbowsTitanium Alloys Equal TeeTitanium Alloys UnEqual Tee
Titanium Alloys Reducing TeeTitanium Alloys 1D ElbowTitanium Alloys 1.5D Elbow
Titanium Alloys Long Stub EndsTitanium Alloys 2D ElbowTitanium Alloys 6D Elbow