Astma320 standard specification for alloysteel and stainless steel bolting for lowtemperature service. Astma320 standard specification for alloysteel and stainless steel bolting for lowtemperature service additional elements. Astm bolting valvespecification temperature material a193 a320. Dan karpan, sales representative at portland bolt, is an expert on the astm a320 specification.
Grades l7 alloy steel aisi 41404142 quenched and tempered. Astm a320 l43 bolts astm a320 l43 hex bolts astm a320. A320 a320m 05 standard specification for alloysteel and stainless steel bolting materials for lowtemperature service, additional elements, austenitic stainless steel, boltssteel, chromiummolybdenum steel, fastenerssteel, markings on fittings, nickelchromiummolybdenum alloy steel, pressure vessel service, stainless steel bolting material, starting material, steel barsalloy, steel. Standard practice for cleaning, descaling, and passivation of stainless steel parts, equipment, and systems1 this standard is issued under the. A320a320m 01 standard specification for alloysteel bolting materials for lowtemperature. All l7 bolts and grade 7 nuts must be charpies impact tested standard for a320 l7l7m for service temperature lower than 29. Astm standards for pipes, carbon steel pipe astm code.
A320a320m 01 standard specification for alloysteel bolting materials for low temperature. This property is due to presence of sulphur in the steel composition, as the sulphur content improves machining, decreases corossion resistance although it remains good in mild environment and reduces the toughness. For more specific information, please refer to the actual astm a320 specification which can be purchased directly from astm international. Aisi 316 is an austentic grade second to 304 in commercial importance it has additional molybdenum which gives improved corossion resistance when exposed to chlorides, it is immune to grain bundaries carbide precipitation. A320 bolts can be specified in several different grades. Astm a320 grade l7 is a standard specification for high tensile 4140 alloy steel bolting materials, intended for use in low temperature services. Contact dan by phone, through our form, by email, or via chat if you have any questions. Standard specification for alloysteel and stainless steel bolting for. Scope this specification covers alloy steel and stainless steel bolting materials for low temperature service. Lightning bolt is an iso 9001 certified fastener manufacturer for astm a320 grade b8 class 2 stud bolts. Bar applications include forging, heat treating, cold drawing, machining and many structural components note 1. Astm a320 a320m 01 standard specification for alloysteel.
Standard practice for cleaning, descaling, and passivation. Class 2 strain hardened required for high pressurelarger sizes refer to manufacturer and low temperature service. Astm a320a320m11a standard specification for alloysteel. Standard specification for alloysteel and stainless steel bolting for lowtemperature service.
This standard has been approved for use by agencies of the department of defense. The astm a320 specification is another popular specification used in the fastener industry. Alloysteel and stainless steel bolting for lowtemperature service1. Astm a320 gr b8f bolts screws studs stud bolts torqbolt. Various astm carbon steel, alloy steel and stainless steel. Din 982 prevailing torque nuts with nonmetalic insert dimensions, specifications, standard, weights, equivalent and download pdf email. Astm a30712 standard specification for carbon steel bolts. Astm a320 grade l7 fasteners manufacturers astm a320. Astm a320a320m01 standard specification for alloysteel bolting materials for lowtemperature service. Astma320 standard specification for alloysteel and.
Astm standard covers alloy steel and stainless steel bolting materials for. Astm a320 scope this specification covers alloy steel and stainless steel bolting materials for low temperature service. Astm a320a320m18 standard specification for alloysteel and stainless steel bolting for lowtemperature service. A 194a 194m specification for carbon and alloy steel. Astm a320 is a standard material specification covering alloy and stainless steel bolting materials for pressure vessels, valves, flanges, and fittings for low temperature services. An astm designation number identifies a unique version of an astm standard. Astm a320 specification astm a320 grade l7 grade l43 grade. Call or email us lightning bolt and supply today, where our fastener experts can meet all of your fastener needs any fasteners any material. Astm a320 a320m 05 standard specification for alloysteel.
Astm a320 standard specification for alloysteel and stainless steel bolting materials for low temperature service. Astm a320 grade b8f b8m astm a320 grade b8m b8 astm a320 grade b8 aisi 304 14 thru 34 over 34 thru 1 over 1 thru 114 over 114 thru 112 100,000 80,000 65,00 50,00 100,000 80,000 65,00 50,00 b8c astm a320 grade b8c aisi 347 b8f astm a320 grade b8f aisi 303or 303se b8m astm a320 grade b8m aisi 316 b8t astm a320. Nuts for bolts for high pressure or high temperature. Astm, sae and iso grade markings for steel fasteners american. Din 3570 ubolts dimensions, specifications, standard, weights, equivalent and download pdf email. Grade 660 fasteners are used in bolting boilers, pressure vessels, pipeline flanges and valves, intended for high temperature service. This specification covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for lowtemperature service. Astm, sae and iso bolting material projectmaterials. A194 grade 4 have been withdrawn from astm standard due to lack of use and availability. Originally approved in 1948, the astm a320 specification covers alloy steel and stainless steel bolting materials for low temperature service.
Astm a320 l7 stud bolt manufacturer, astm a320 l7m stud bolt with two nuts,asme b18. Astm a320 a320m 18 standard specification for alloy. Astm a320 b8m aisi ss 316 bolts, astm sa320 b8m aisi ss 316. Ah 300 series stainless steel solution treated 304 304l. Astm a320a320m 11a standard specification for alloysteel and stainless steel bolting for lowtemperature service. An l is added as a suffix to indicate charpies testing on nuts only i. Astm a320 grade l7 material is chemically equivalent to astm b638 grade 660 stainless steel alloy, also known by alloy a286 and uns s66286, heat treated to achieve properties defined in astm a453 specification. Astm a320 grade l7 specification boltport fasteners. A320 a320m18 standard specification for alloysteel and stainless steel bolting for lowtemperature service bolts. Astm a320 a320m 18 standard specification for alloysteel and. Astm a320 specification includes chemical composition, mechanical properties, dimensional reference standards, recommended nuts and washers for grades like l7, l43, b8, b8m, b8c, b8t and many others with notch. P stud bolts, astm a320 sa193 grade l7m, plain the information below lists the required dimensional, chemical and physical characteristics of the products in this purchase order.
F astm a320 gr b8b8m bolting must be impact tested. Do not use these tables for design or ordering purposes. Aisi 303 is most easily machinable steel of all austenitic grades of stainless steel. The term bolting material as used in this specification covers, rolled, forged or strain hardened bars, bolts, screws, studs and stud bolts. Astm a320 specification includes chemical composition, mechanical properties, dimensional reference standards, recommended nuts and washers for grades like l7, l43. These steel standards, astm standard for boiler tube are helpful in guiding metallurgical laboratories and refineries. Active standard astm a320 a320m developed by subcommittee. This website summarizes the similarities and differences between many of the grades. Additional grades of a320 bolts exist but are not used frequently enough to list on this site. Astm a320 l7 stud bolt manufacturer,astm a320 l7m stud bolt with two nuts,asme b18. The term bolting material as used in this specification covers rolled, forged. Astm a320a320m11 standard specification for alloysteel and stainless steel bolting for lowtemperature service. Astm a320a320m11a standard specification for alloy.
Astm a320 a320m 15 standard specification for alloy. The astm a320 specification covers alloy steel and stainless steel bolting materials for low temperature service. Astm a320 specification astm a320 grade l7 grade l43. Like the astm a193 specification, unless otherwise specified, the 8un thread series is specified on fastener larger than 1 in diameter.
Astm a320a320m18 standard specification for alloysteel. We stock a large amount of astm a320 grade b8m stud bolts. Standard practice for cleaning, descaling, and passivation of. Our customers can procure these astm a320 b8m class 1 bolts as per their specifications and also at best possible prices. Download a complimentary pdf of our fastener markings chart. Astm international helping our world work better standards catalog 2016. This document is available in either paper or pdf format. This standard is issued under the fixed designation a320a320m. Last previous edition approved in 2011 as a320a320m11. Astm a320 a320m18 standard specification for alloysteel and stainless steel bolting for lowtemperature service. For annual book of astm standards volume information, refer to the standards document summary page on the. Astm a320 specification includes chemical composition, mechanical properties, dimensional reference standards, recommended nuts and washers for grades like l7, l43, b8, b8m, b8c, b8t and many others with notch toughness requirements. This standard covers rolled, forged, or strain hardened bars, bolts, screws, studs, and stud bolts used for pressure vessels, valves, flanges, and fittings. Astm standards for pipes, carbon steel pipe astm code, astm.
Standard specification for alloysteel and stainless steel bolting materials for lowtemperature service. Astm a350 gr lf2 astm a352 gr lcb astm a320 gr l7 alloy astm a194 gr 7 lowtemp astm a333 gr 3 astm a420 gr wpl3 astm a350 gr lf3 astm a352 gr lc3. Standard specification for alloysteel and stainless steel bolting for low. Astm a320 a320m01 standard specification for alloysteel bolting materials for lowtemperature service superseded see active link, below.
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