#### § 56.60-1 Acceptable materials and specifications (replaces 123 and Table 126.1 in ASME B31.1).

(a)

(1) The material requirements in this subpart must be followed in lieu of those in 123 in ASME B31.1 (incorporated by reference; see [§ 56.01-2](/on/2024-09-23/title-46/section-56.01-2)).

(2) Materials used in piping systems must be selected from:

(i) The pipe, tubing, and fitting specifications that appear in table 1 to [§ 56.60-1o](/on/2024-09-23/title-46/section-56.60-1o)r the accepted materials for use as piping system components that appear in table 1 to [§ 56.60-2](/on/2024-09-23/title-46/section-56.60-2);

(ii) ASTM F1155 (incorporated by reference; see [§ 56.01-2](/on/2024-09-23/title-46/section-56.01-2)); or

(iii) The material specifications of Sections I or VIII of the ASME BPVC (both incorporated by reference; see [§ 56.01-2](/on/2024-09-23/title-46/section-56.01-2)) if not prohibited by a regulation of this subchapter.

(3) Materials conforming to specifications not described in [paragraph (a)(2)](/on/2024-09-23/title-46/section-56.60-1#p-56.60-1(a)(2)) of this section must receive the specific approval of the Marine Safety Center.

(4) Materials listed in Table 126.1 of ASME B31.1 are not accepted unless specifically permitted by this paragraph.

(b) Components made in accordance with the commercial standards listed in table 2 to [§ 56.60-1](/on/2024-09-23/title-46/section-56.60-1) and made of materials complying with paragraph (a) this section may be used in piping systems within the limitations of the standards and within any further limitations specified in this subchapter.

Table 1 to [§ 56.60-1](/on/2024-09-23/title-46/section-56.60-1)—Adopted Specifications and Standards

| ASTM standards | ASME standards | Notes |
| --- | --- | --- |
| Pipe, seamless: | | |
| F1155 Carbon steel | B31.1 | |
| F1155 Ferritic alloy steel | B31.1 | |
| A376/A376M Austenitic alloys | B31.1 | (1). |
| Pipe, seamless and welded: | | |
| A53/A53M | B31.1 | (234). |
| A312/A312M Austenitic steel (welded with no filler metal) | B31.1, B31.3 | (14). |
| A333/A333M Low temperature steel pipe | Sec. VIII of the BPVC, B31.3 | (56). |
| Pipe, welded: | | |
| F1155 Electric-Fusion welded Arc-welded steel | See footnote 7 | (7). |
| A135/A135M ERW pipe | B31.1 | (3). |
| F1155 Electric-fusion welded arc-welded steel pipe | B31.1 | (8). |
| A358/A358M Electric fusion welded pipe, high temperature, austenitic | B31.1 | (149). |
| Pipe, forged and bored: | | |
| A358/A358M Ferritic alloy | B31.1 | |
| Tube, seamless: | | |
| F1155 Seamless Cold-drawn Low Carbon steel heat exchanger and condenser tubes | UCS23, Sec. VIII of the BPVC | (10). |
| F1155 Seamless Carbon steel boiler tubes | PG23.1, Sec. I of the BPVC | (10). |
| A210/A210M Medium carbon boiler tubes | PG23.1, Sec. I of the BPVC | |
| F1155 Seamless Ferritic and Austenitic Alloy-Steel Boiler tubes | PG23.1, Sec. I of the BPVC | (1). |
| Tube, seamless and welded: | | |
| A268/A268M Seamless and ERW ferritic stainless tubing | PG23.1, Sec. I of the BPVC | (4). |
| A334/A334M Seamless and welded carbon and alloy-steel tubes for low-temperature service | UCS23, Sec. VIII of the BPVC | (45). |
| Tube, welded: | | |
| F1155 ERW Carbon steel and carbon manganese boiler tubes | PG23.1, Sec. I of the BPVC | (10 Grade A) (4). |
| F1155 ERW Carbon steel heat exchanger and condenser tubes | UCS27, Sec. VIII of the BPVC | |
| F1155 Welded austenitic boiler and heat exchanger tubes | PG23.1, Sec. I of the BPVC | (14). |
| Wrought fittings (factory made): | | |
| F1155 Carbon steel and alloy steel for moderate and high temperature service | Conforms to applicable American National Standards (B16.11) | (11). |
| A403/A403M Austenitic alloys | . . . . . . do | (11). |
| A420/A420M Low temperature carbon and steel alloy | . . . . . . do | (11). |
| Castings,12 iron: | | |
| A47/A47M Malleable iron | Conform to applicable American National Standards or refer to UCI-23 or UCD-23, Sec. VIII of the BPVC | (13). |
| A126 Gray iron | . . . . . . do | (13). |
| A197/A197M Malleable iron | . . . . . . do | (13). |
| F1155 Ferritic Ductile iron | UCD-23, Sec. VIII of the BPVC | (13). |
| F1155 Ductile iron castings | See footnote 18 | (18). |
| **Nonferrous Materials**14 | | |
| Pipe, seamless: | | |
| B42 Copper | UNF23, Sec. VIII of the BPVC | (15). |
| B43 Red brass | . . . . . . do | |
| B241/B241M Aluminum alloy | . . . . . . do | |
| Pipe and tube, seamless: | | |
| B161 Nickel | . . . . . . do | |
| B165 Nickel-copper | . . . . . . do | |
| B167 Ni-Cr-Fe | . . . . . . do | |
| B315 Copper-silicon | . . . . . . do | |
| Tube, seamless: | | |
| B68/B68M Copper | See footnote 16 | (151617). |
| B75/B75M Copper | UNF23, Sec. VIII of the BPVC | (15). |
| F1155 Seamless Copper water tube | See footnote 16 | (1516). |
| B111/B111M Copper and copper alloy | UNF23, Sec. VIII of the BPVC | |
| B210/B210M Aluminum alloy, drawn | . . . . . . do | |
| B234 Aluminum alloy, drawn | . . . . . . do | |
| B280 Copper tube for refrigeration service | See footnote 16 | (1516). |
| Welding fittings: | | |
| B361 Wrought aluminum welding fittings | Must meet ASME Standards | |
| | | |
| --- | --- | --- |
| 1 For austenitic materials where two sets of stresses appear, use the lower values. | | |
| 2 Type F (Furnace welded, using open hearth, basic oxygen, or electric furnace only) limited to Class II applications with a maximum service temperature of 450 °F. Type E (ERW grade) limited to maximum service temperature of 650 °F, or less. | | |
| 3 Electric resistance welded pipe or tubing of this specification may be used to a maximum design pressure of 350 psig. | | |
| 4 Refer to limitations on use of welded grades given in [§ 56.60-2(b)](/on/2024-09-23/title-46/section-56.60-2#p-56.60-2(b)). | | |
| 5 Use generally considered for Classes I-L and II-L applications. For Class I-L service only, the seamless grade is permitted. For other service refer to footnote 4 and to [§ 56.50-105](/on/2024-09-23/title-46/section-56.50-105). | | |
| 6 Furnace lap or furnace butt grades only. Limited to Class II applications only where the maximum service temperature is 450 °F, or less. | | |
| 7 Limited to Class II applications only where maximum service temperature is 300 °F or less for straight seam, and 200 °F or less for spiral seam. | | |
| 8 Limited to Class II applications where the maximum service temperature is 300 °F or less for straight seam and 200 °F or less for spiral seam. | | |
| 9 For Class I applications only the Class I Grade of the specification may be used. | | |
| 10 When used in piping systems, a certificate must be furnished by the manufacturer certifying the mechanical properties at room temperature. Without this certification, use is limited to applications within heat exchangers. | | |
| 11 Hydrostatic testing of these fittings is not required but all fittings must be capable of withstanding a hydrostatic test of 1.5 times the design pressure. | | |
| 12 Other acceptable iron castings are in UCI-23 and UCD-23 of Section VIII of the ASME BPVC. (See also [§§ 56.60-10](/on/2024-09-23/title-46/section-56.60-10) and [56.60-15](/on/2024-09-23/title-46/section-56.60-15).) Acceptable castings of materials other than cast iron may be found in Sections I or VIII of the ASME BPVC. | | |
| 13 Acceptable when complying with ANSI standards. Ductile iron is acceptable for temperatures not exceeding 650 °F. For pressure temperature limitations refer to UCD-3 of Section VIII of the ASME BPVC. Other grades of cast iron are acceptable for temperatures not exceeding 450 °F. For pressure temperature limitations refer to UCI-3 of Section VIII of the ASME BPVC. | | |
| 14 For limitations in use refer to [§§ 56.10-5(c)](/on/2024-09-23/title-46/section-56.10-5#p-56.10-5(c)) and [56.60](/on/2024-09-23/title-46/section-56.60)-20. | | |
| 15 Copper pipe must not be used for hot oil systems except for short flexible connections at burners. Copper pipe must be annealed before installation in Class I piping systems. See also [§§ 56.10-5(c)](/on/2024-09-23/title-46/section-56.10-5#p-56.10-5(c)) and [56.60](/on/2024-09-23/title-46/section-56.60)-20. | | |
| 16 The stress values must be taken from UNF23 of Section VIII of the ASME BPVC for B75 annealed and light drawn temper as appropriate. | | |
| 17 B68 is acceptable if provided with a mill hydrostatic or eddy current test. | | |
| 18 Limited to pipe fittings and valves. See [§ 56.60-15(d)](/on/2024-09-23/title-46/section-56.60-15#p-56.60-15(d)) for additional information. | | |
| **Note 1 to table 1 to [§ 56.60-1](/on/2024-09-23/title-46/section-56.60-1):** Table 1 to [§ 56.60-1](/on/2024-09-23/title-46/section-56.60-1) replaces Table 126.1 in ASME B31.1 and sets forth specifications of pipes, tubing, and fittings intended for use in piping-systems. The first column lists acceptable standards from ASTM (all incorporated by reference; see [§ 56.01-2](/on/2024-09-23/title-46/section-56.01-2)); the second lists those from ASME (all incorporated by reference; see [§ 56.01-2](/on/2024-09-23/title-46/section-56.01-2)). The Coast Guard will consider use of alternative pipes, tubing, and fittings when it receives certification of their mechanical properties. | | |
| **Note 2 to table 1 to [§ 56.60-1](/on/2024-09-23/title-46/section-56.60-1):** When using 104.1.2 in ASME B31.1 to compute wall thickness, the stress shown here must be applied as though taken from the stress tables. An additional factor of 0.8 may be required by [§ 56.07-10(c)](/on/2024-09-23/title-46/section-56.07-10#p-56.07-10(c)) and [(e)](/on/2024-09-23/title-46/section-56.07-10#p-56.07-10(e)). | | |

Table 2 to [§ 56.60-1](/on/2024-09-23/title-46/section-56.60-1)—Adopted Standards Applicable to Piping Systems

[Replaces Table 126.1]

| **American Society of Mechanical Engineers (ASME) International**1 | |
| ASME B1.1 | Unified Inch Screw Threads (UN and UNR Thread Form). |
| ASME B1.20.1 | Pipe Threads, General Purpose (Inch). |
| ASME B1.20.3 | Dryseal Pipe Threads (Inch). |
| ASME B16.1 | Gray Iron Pipe Flanges and Flanged Fittings, Classes 25, 125, 250. |
| ASME B16.3 | Malleable Iron Threaded Fittings, Classes 150 and 300. |
| ASME B16.4 | Gray Iron Threaded Fittings, Classes 125 and 250. |
| ASME B16.5 | Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24 Metric/Inch Standard.3 |
| ASME B16.11 | Forged Fittings, Socket-Welding and Threaded. |
| ASME B16.14 | Ferrous Pipe Plugs, Bushings, and Locknuts with Pipe Threads. |
| ASME B16.15 | Cast Copper Alloy Threaded Fittings, Classes 125 and 250. |
| ASME B16.20 | Metallic Gaskets for Pipe Flanges, Ring-Joint, Spiral-Wound, and Jacketed. |
| ASME B16.21 | Nonmetallic Flat Gaskets for Pipe Flanges. |
| ASME B16.23 | Cast Copper Alloy Solder Joint Drainage Fittings: DWV.4 |
| ASME B16.25 | Buttwelding Ends. |
| ASME B16.29 | Wrought Copper and Wrought Copper Alloy Solder Joint Drainage Fittings-DWV.4 |
| ASME B16.34 | Valves—Flanged, Threaded, and Welding End.3 |
| ASME B18.2.1 | Square, Hex, Heavy Hex, and Askew Head Bolts and Hex, Heavy Hex, Hex Flange, Lobed Head, and Lag Screws (Inch Series). |
| ASME B18.2.2 | Nuts for General Applications: Machine Screw Nuts, Hex, Square, Hex Flange, and Coupling Nuts (Inch Series). |
| ASME B31.1 | Power Piping, ASME Code for Pressure Piping, B31. |
| ASME B31.3 | Process Piping, ASME Code for Pressure Piping, B31. |
| ASME B36.10M | Welded and Seamless Wrought Steel Pipe. |
| ASME B36.19M | Stainless Steel Pipe. |
| **ASTM International (ASTM)**1 | |
| ASTM F1006 | Standard Specification for Entrainment Separators for Use in Marine Piping Applications.4 |
| ASTM F1007 | Standard Specification for Pipeline Expansion Joints of the Packed Slip Type for Marine Application. |
| ASTM F1020 | Standard Specification for Line-Blind Valves for Marine Applications. |
| ASTM F1120 | Standard Specification for Circular Metallic Bellows Type Expansion Joints for Piping Applications.4 |
| ASTM F1123 | Standard Specification for Non-Metallic Expansion Joints. |
| ASTM F1139 | Standard Specification for Steam Traps and Drains. |
| ASTM F1155 | Standard Practice for Selection and Application of Piping System Materials.2 |
| ASTM F1172 | Standard Specification for Fuel Oil Meters of the Volumetric Positive Displacement Type. |
| ASTM F1173 | Standard Specification for Thermosetting Resin Fiberglass Pipe and Fittings to be Used for Marine Applications. |
| ASTM F1199 | Standard Specification for Cast (All Temperature and Pressures) and Welded Pipe Line Strainers (150 psig and 150 Degrees F Maximum). |
| ASTM F1200 | Standard Specification for Fabricated (Welded) Pipe Line Strainers (Above 150 psig and 150 Degrees F). |
| ASTM F1201 | Standard Specification for Fluid Conditioner Fittings in Piping Applications above 0 Degrees F. |
| **Expansion Joint Manufacturers Association Inc.**1 | |
| | Standards of the Expansion Joint Manufacturers Association, 2016 |
| Fluid Controls Institute Inc. | |
| FCI 69-1 | Pressure Rating Standard for Steam Traps. |
| **Manufacturers' Standardization Society of the Valve and Fittings Industry, Inc.**1 | |
| MSS SP-6 | Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and Fittings. |
| MSS SP-9 | Spot Facing for Bronze, Iron and Steel Flanges. |
| MSS SP-25 | Standard Marking System for Valves, Fittings, Flanges and Unions. |
| MSS SP-45 | Bypass and Drain Connections. |
| MSS SP-51 | Class 150LW Corrosion Resistant Flanges and Cast Flanged Fittings.4 |
| MSS SP-53 | Quality Standard for Steel Castings and Forgings for Valves, Flanges and Fittings and Other Piping Components—Magnetic Particle Examination Method. |
| MSS SP-55 | Quality Standard for Steel Castings for Valves, Flanges and Fittings and Other Piping Components—Visual Method for Evaluation of Surface Irregularities. |
| MSS SP-58 | Pipe Hangers and Supports—Materials, Design Manufacture, Selection, Application, and Installation. |
| MSS SP-61 | Pressure Testing of Valves. |
| | |
| --- | --- |
| 1 All standards incorporated by reference; see [§ 56.01-2](/on/2024-09-23/title-46/section-56.01-2). | |
| 2 In addition, for bronze valves, adequacy of body shell thickness must be satisfactory to the Marine Safety Center. Refer to [§ 56.60-10 of this part](/on/2024-09-23/title-46/part-56/section-56.60-10) for cast-iron valves. | |
| 3 Mill or manufacturer's certification is not required, except where a needed portion of the required marking is deleted because of size or is absent because of age of existing stocks. | |
| 4 Because this standard offers the option of several materials, some of which are not generally acceptable to the Coast Guard, compliance with the standard does not necessarily indicate compliance with these rules. The marking on the component or the manufacturer or mill certificate must indicate the specification or grade of the materials as necessary to fully identify the materials. The materials must comply with the requirements in this subchapter governing the particular application. | |

[USCG-2020-0634, [89 FR 50150](https://www.federalregister.gov/citation/89-FR-50150), June 12, 2024]