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316 Stainless steel threaded pipe fittings are manufactured by forging and machining solid steel and are available in a multitude of shapes like elbow, tee, cross, union, cap,coupling. There are many types of elbows that are 90 & 45 degree, straight & reducing elbow, F/Female & F/Male thread. They are also belong to high pressure pipe fittings because their pressure ratings are 2000lb, 3000lb, 6000lb.
Threaded pipe fittings are used only in conjunction with ASME Pipe and are available in the same size range. And where pipe-work is permanent and are designed to provide good flow characteristics. And suitable in small bore pipes and piping system.
Markings on Stainless Steel Elbow
Specification of SS316 Threaded Elbow
Speficiation | ASTM A182 / SA182, ASTM / ASME B16.11 |
Size Range | 1/8" to 4" in Class 2000lb, 3000lb, 6000lb |
Type | Straight Elbow, Reducing Elbow, 90 Degree & 45 Degree Elbow, Female Elbow, Female & Male Elbow |
| Grades | ASTM A182 F304/304L/304H, F316/316L/316H, F321/321H, F347/347H, F310/310S |
| Thread Type | NPT, PT, BSPP, BSPT |
Standard for Stainless Steel Threaded Elbow
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
ASTM A182 Stainless Steel Chemical Composition
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo |
| F304 | 0.08 | 1.0 | 2.0 | 0.045 | 0.03 | 18 - 20 | 8.0 - 11.0 | - |
| F304H | 0.04 - 0.1 | 1.0 | 2.0 | 0.045 | 0.03 | 18 - 20 | 8.0 - 11.0 | - |
| F304L | 0.03 | 1.0 | 2.0 | 0.045 | 0.03 | 18 - 20 | 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 | - |
ASTM A182 Stainless Steel Mechnical Properties
| Grade | Tensile Strength (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 | - |
Stainless Steel Pipe Fittings Features
