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AISI 304 MSS SP-114 CL150 2″ Stainless Steel Cast Threaded Non-banded Coupling
Product Information
| Product Name | AISI 304 MSS SP-114 CL150 2″ Stainless Steel Cast Threaded Non-banded Coupling |
| Thread Types | ASME B1.20.1(NPT) |
| Dimensions | MSS SP-114 |
| Size Range | 1¼ |
| Pressure Class | Class 150 NPT |
| Materials | AISI 304/L |
Standard & Materials: AISI 304/L
The SAE/ANSI 304 (AISI 304) is the most commonly available and used type of stainless steel. It is also referred to as 18/8 stainless steel, A2 stainless steel (as per the ISO 3506), or 304S15 (as per the British Standard). This is an austenitic chromium-nickel alloy which practically means that it has a very high corrosion resistance. It is also nonmagnetic and can’t be hardened through heat treatment. As AISI 304 can withstand extremely corrosive environments and can be shaped, machined and welded relatively easy, it is very popular for a wide range of applications.
AISI 304/L Chemical Composition (%)
| Grade | C, max | Cr | Mn, max | Ni | P, max | S, max | Si, max |
| AISI 304 | 0.08 | 18~20 | 2 | 8~10.5 | 0.045 | 0.03 | 1 |
| AISI 304L | 0.03 | 18~20 | 2 | 8~12 | 0.045 | 0.03 | 1 |
AISI 304/L Mechanical Properties
| Mechanical Properties | 304 | 304L |
| Hardness, Knoop | 138 | 158 |
| Hardness, Rockwell B | 70 | 82 |
| Hardness, Vickers | 129 | 159 |
| Tensile Strength, Ultimate | 505 MPa | 564 MPa |
| Tensile Strength, Yield | 215 MPa | 210 MPa |
| Elongation at Break | 70% | 58% |
| Modulus of Elasticity | 193~200 GPa | 193~200 GPa |
| Charpy Impact | 325 J | 216J |
Dimensions of Class 150 Cast Threaded Coupling (Straight and Reducing Sizes) (in inches)
| NPS | Length of Thread(b) (min.) | Width of Band (min.) | Metal Thickness(a) | Outside Dia. of Band(c) (min.) | Length of Straight Couplings (min.) | Length of Concentric Reducing Couplings (min.) |
| B | E | G | H | W | M | |
| ⅛ | 0.25 | 0.20 | 0.09 | 0.75 | 1.00 | — |
| ¼ | 0.32 | 0.20 | 0.09 | 0.84 | 1.00 | 1.00 |
| ⅜ | 0.36 | 0.21 | 0.10 | 1.01 | 1.12 | 1.12 |
| ½ | 0.43 | 0.25 | 0.10 | 1.20 | 1.38 | 1.38 |
| ¾ | 0.50 | 0.27 | 0.12 | 1.46 | 1.50 | 1.50 |
| 1 | 0.58 | 0.30 | 0.13 | 1.77 | 1.62 | 1.62 |
| 1¼ | 0.67 | 0.34 | 0.14 | 2.15 | 2.00 | 2.00 |
| 1½ | 0.70 | 0.37 | 0.15 | 2.43 | 2.12 | 2.12 |
| 2 | 0.75 | 0.42 | 0.17 | 2.96 | 2.50 | 2.50 |
| 2½ | 0.92 | 0.48 | 0.21 | 3.31 | 2.87 | 3.25 |
| 3 | 0.98 | 0.55 | 0.23 | 4.00 | 3.18 | 3.68 |
| 4 | 1.08 | 0.66 | 0.26 | 5.06 | 3.68 | 4.38 |
GENERAL NOTE: Reducing couplings may be either bell or straight. The outside diameter (H) of straight reducing couplings shall correspond to the largest size end connection of the reducing fitting.
NOTES:
(a) Patterns shall be designed to produce castings of metal thickness given in the Table. Metal thickness at no point shall be less than 90% of values given in the Table.
(b) The length of thread may extend beyond the width of band. However, minimum metal thickness (G) must be maintained at the end of the thread.
(c) Couplings, half couplings and reducing couplings may be banded or non-banded.
(d) Ribs are permitted as per Section 9. The applicable “external” broken lines in the drawings above indicate where ribs are allowed.
