Stainless Steel 347/347H Buttweld Fittings Specifications
Grades | SS 347(UNS S34700), SS 347H (UNS S34709) |
Werkstoff Nr | 347 / 1.4550, 347H / 1.4961 |
Dimension Std. | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
Specification | ASTM A403 / ASME SA403 |
Size | ½” NB – 48” NB |
Thickness | SCH 10 – SCH XXS |
Type | Seamless / ERW / Welded / Fabricated |
Types of Buttweld Fittings
Stainless Steel Reducers | Stainless Steel Concentric Reducers | Stainless Steel Tees |
Stainless Steel Weldolet | Stainless Steel Short Stub End | Stainless Steel Eccentric Reducers |
Stainless Steel Elbows | Stainless Steel 3D Elbow | Stainless Steel Lap Joint Stub End |
Stainless Steel End Caps | Stainless Steel 5D Elbow | Stainless Steel 180° SR Return Bends |
Stainless Steel Elbows | Stainless Steel Short Radius Elbow | Stainless Steel 45° Elbows |
Stainless Steel Reducing Elbow | Stainless Steel Long Radius Elbow | Stainless Steel 180° LR Return Bends |
Stainless Steel 45° Elbows | Stainless Steel Equal Tee | Stainless Steel UnEqual Tee |
Stainless Steel Reducing Tee | Stainless Steel 1D Elbow | Stainless Steel 1.5D Elbow |
Stainless Steel Long Stub Ends | Stainless Steel 2D Elbow | Stainless Steel 6D Elbow |
Chemical Compositions of SS 347/347H Buttweld Fittings
C | Cr | Mn | Ni | P | S | Si | Cb/Ta | |
---|---|---|---|---|---|---|---|---|
347 | 0.08 max |
min: 17.0 max: 20.0 |
2.0 max |
min: 9.0 max: 13.0 |
0.04 max |
0.30 max |
0.75 max |
min:10x C max: 1.0 |
347H |
min: 0.04 max: 0.10 |
min: 17.0 max: 20.0 |
2.0 max | min: 9.0 max: 13.0 |
0.03 max | 0.30 max |
0.75 max |
min:10x C max: 1.0 |
Mechanical Properties of SS 347/347H Buttweld Fittings
Grade | Tensile Strength ksi (MPa) min | Yield Strength 0.2% ksi offset ksi (MPa) min | Elongation (% in 50mm) min | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
---|---|---|---|---|---|
347/347H |
75 (515) |
30 (205) |
40 | 201 | 95 |
Physical Properties of SS 347/347H Buttweld Fittings
Density lbm/in3 |
Coefficient of Thermal Expansion (min/in)-°F |
Thermal Conductivity BTU/hr-ft-°F | Specific Heat BTU/lbm -°F | Modules of Elasticity (annealed)2-psi | |
---|---|---|---|---|---|
at 68 °F | at 68 – 212°F | at 68 – 1832°F | 68-932°F | at 32 – 212°F | in tension (E) |
0.288 | 9.2 | 11.4 | 14.7 | 0.12 | 28 x 106 |
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