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Stainless Steel 316 Socket Weld Pipe Fittings ASME B16.11 White Steel
Stainless steel 316 socket weld pipe fittings is a one type of forged fittings,which have better corrision resistant than SS304. It is used for small bore pipes and piping systems. Socket weld fittings are manufactured by forging and machining solid steel and are available in a multitude of shapes like elbows, tees, crosses, unions, caps,couplings.
Markings on Socket Weld Pipe Fittings
Specification of Stainless Steel Socket Weld Fittings
Specification | ASTM A182 & ASME SA182/ ANSI/ASME B16.11 / MSS-SP-43/79/83 |
Type | Socket Weld Fittings |
Size Range | 1/8" NB to 4"NB in Class 3000lb, 6000lb, 9000lb |
Type | Stainless Steel Socket Weld Elbow, Tee, Cross, Coupling, Cap, Lateral Tee, Union |
| Grades | ASTM A182 F304/304L/304H, F316/316L/316H, F321/321H, F347/347H, F51, F53, F55, F56, F60 |
Standard for Stainless Steel Socket Weld Pipe Fittings
ASME B16.11
This Standard covers ratings, dimensions, tolerances, marking and material requirements for socket-welding and Threaded Forged Fittings.
ASTM A182 / A182M
Standard Specification for Forged Fittings, and Parts for High-Temperature Service
MSS SP-83
Class 3000 and 6000 Pipe Unions, Socket Welding and Threaded
MSS SP-95
This Standard Practice covers dimensions, finish, tolerances, marking, and material for carbon steel and alloy steel Swaged Nipples (male end reducing fittings), NPS 1/4 through NPS 12 and Bull Plugs (hollow or solid male closures) NPS 1/8 through NPS 12.
Forged Stainless Steel Grades
Chemical Composition
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo |
| F304 | 0.08 | 1.0 | 2.0 | 0.045 | 0.03 | 18.0 - 20.0 | 8.0 - 11.0 | - |
| F304H | 0.04 - 0.1 | 1.0 | 2.0 | 0.045 | 0.03 | 18.0 - 20.0 | 8.0 - 11.0 | - |
| F304L | 0.03 | 1.0 | 2.0 | 0.045 | 0.03 | 18.0 - 20.0 | 8.0 - 13.0 | - |
| F316 | 0.08 | 1.0 | 2.0 | 0.045 | 0.03 | 16.0 - 18.0 | 10.0 - 14.0 | 2.0 - 3.0 |
| F316H | 0.04 - 0.1 | 1.0 | 2.0 | 0.045 | 0.03 | 16.0 - 18.0 | 10.0 - 14.0 | 2.0 - 3.0 |
| F316L | 0.03 | 1.0 | 2.0 | 0.045 | 0.03 | 16.0 - 18.0 | 10.0 - 15.0 | 2.0 - 3.0 |
| F321 | 0.08 | 1.0 | 2.0 | 0.045 | 0.03 | 17.0 - 19.0 | 9.0 - 12.0 | - |
| F321H | 0.04 - 0.1 | 1.0 | 2.0 | 0.045 | 0.03 | 17.0 - 19.0 | 9.0 - 12.0 | - |
| F347 | 0.08 | 1.0 | 2.0 | 0.045 | 0.03 | 17.0 - 20.0 | 9.0 - 13.0 | - |
| F347H | 0.04 - 0.1 | 1.0 | 2.0 | 0.045 | 0.03 | 17.0 - 20.0 | 9.0 - 13.0 | - |
| F51 | 0.03 | 1.0 | 2.0 | 0.03 | 0.02 | 21.0 - 23.0 | 4.5 - 6.5 | 2.5 - 3.5 |
| F60 | 0.03 | 1.0 | 2.0 | 0.03 | 0.02 | 21.0 - 23.0 | 4.5 - 6.5 | 3.0 - 3.5 |
Mechnical Properties
| Grade | Yield Tensile (Mpa) | Yield Tensile (Mpa) | Elongation (%) | Hardness (HB) |
| F304 | 515 | 205 | 30 | - |
| F304H | 515 | 205 | 30 | - |
| F304L | 485 | 170 | 30 | - |
| F316 | 515 | 205 | 30 | - |
| F316H | 515 | 205 | 30 | - |
| F316L | 485 | 170 | 30 | - |
| F321 | 515 | 205 | 30 | - |
| F321H | 515 | 205 | 30 | - |
| F347 | 515 | 205 | 30 | - |
| F347H | 515 | 205 | 30 | - |
| F51 | 620 | 450 | 25 | - |
| F60 | 655 | 485 | 25 | - |
Product Features
