ASTM A490 A490M Heavy Hex Structural Bolt
Kufotokozera Kwachidule:
ASTM A490 A490M Heavy Hex Structural Bolts Ma bolts amapangidwira kuti azigwiritsidwa ntchito polumikizana ndi mapangidwe. Malumikizidwewa akukhudzidwa ndi zofunikira za Specification for Structural Joints Kugwiritsa Ntchito Maboti a ASTM A490, ovomerezedwa ndi Research Council on Structural Connections, ovomerezedwa ndi American Institute of Steel Construction ndi Industrial Fastener Institute. Kukula: ASME B18.2.6, ASME/ANSI B18.2.3.7M Inchi Kukula: 1/2″-1.1/2″ ndi utali wosiyanasiyana Kukula kwa Metric: M12-...
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ASTM A490 A490M Maboti Olemera a Hex Structural
Ma bolts amapangidwa kuti agwiritsidwe ntchito polumikizana ndi zomangamanga. Malumikizidwewa akukhudzidwa ndi zofunikira za Specification for Structural Joints Kugwiritsa Ntchito Maboti a ASTM A490, ovomerezedwa ndi Research Council on Structural Connections, ovomerezedwa ndi American Institute of Steel Construction ndi Industrial Fastener Institute.
Kukula: ASME B18.2.6, ASME/ANSI B18.2.3.7M
Inchi Kukula: 1/2″-1.1/2″ ndi kutalika kosiyanasiyana
Kukula kwa Metric: M12-M36 yokhala ndi kutalika kosiyanasiyana
Gulu: ASTM A490 A490M Mtundu-1
Malizitsani: Black Oxide, Zinc Plating, Dacromet, ndi zina zotero
Kulongedza: Chochuluka pafupifupi 25 kgs katoni iliyonse, makatoni 36 aliwonse phale
Ubwino: Ubwino Wapamwamba ndi Kuwongolera Kwabwino Kwambiri, Mtengo Wopikisana, Kutumiza munthawi yake; Thandizo laukadaulo, Malipoti a Supply Test
Chonde khalani omasuka kulankhula nafe kuti mumve zambiri.
Chithunzi cha ASTM A490
Isanatuluke mu 2016, mawonekedwe a ASTM A490 anali atazimitsidwa ndi kutenthedwa, chitsulo cha alloy, ma bolt olemera a hex kuchokera pa 1/2 ″ m'mimba mwake mpaka 1-1/2 ″ wokhala ndi mphamvu yochepera 150 ksi. Mabotiwa amapangidwa kuti azigwiritsidwa ntchito polumikizana ndi kamangidwe kotero amakhala ndi ulusi wamfupi kuposa ma bawuti wamba a hex. Onani tsamba la Structural Bolts patsamba lathu kuti muwone kutalika kwa ulusi ndi miyeso ina yofananira. Mabawuti a A490 ndi ofanana pakugwiritsa ntchito komanso kukula kwake kwa mabawuti olemera a hex a A325 koma amapangidwa kuchokera ku chitsulo cha aloyi m'malo mwa chitsulo chapakatikati cha kaboni, zomwe zimapangitsa chomangira champhamvu kwambiri. Mafotokozedwe a A490 amagwira ntchito pamaboti olemera a hex okha. Pamabawuti okhala ndi ulusi wosiyanasiyana utali kuposa momwe amatchulira mabawuti koma okhala ndi makina ofanana, onani Specification A354 grade BD. Mabawuti a ASTM A490 sayenera kuphimbidwa ndi kuviika kotentha, kuyika kwamakina, kapena kuyika ma electroplating ndi zinki chifukwa cha chiwopsezo cha hydrogen embrittlement. ASTM yavomereza zokutira ma bolt a A490 okhala ndi Zinc/Aluminium Corrosion Protective Coatings pa ASTM F1136 Grade 3, yomwe imatchedwa Geomet. Kuyesa kowonjezera mu mawonekedwe a Magnetic Particle Inspection for Longitudinal Discontinuities and Transverse Cracks ndikofunikira pamafotokozedwe a A490.
Zithunzi za A490
TYPE 1 | Sing'anga carbon ndi aloyi chitsulo. |
---|---|
TYPE 2 | Adatulutsidwa mu 2002. |
TYPE 3 | Weathering zitsulo. |
M | Metric A490. |
Mitundu ya kulumikizana kwa A490
SC | Chotsani kulumikizana kofunikira. |
---|---|
N | Kulumikizana kwamtundu wokhala ndi ulusi wophatikizidwa mu ndeke yometa ubweya. |
X | Kulumikizana kwamtundu wamtundu wokhala ndi ulusi wosaphatikizidwa mundege yometa ubweya. |
A490 Mechanical Properties
Kukula | Tensile, ksi | Yield, ksi | Elong. %, min | RA%, min |
---|---|---|---|---|
1/2 – 1-1/2 | 150-173 | 130 | 14 | 40 |
A490 Chemical Properties
Type 1 Bolts | ||
---|---|---|
Chinthu | Miyeso 1/2 mpaka 1-3/8 | Kukula 1-1/2 |
Kaboni, max | 0.30 - 0.48% | 0.35 - 0.53% |
Phosphorous, max | 0.040% | 0.040% |
Sulphur, max | 0.040% | 0.040% |
Alloying Elements | * | * |
* Chitsulo, monga tafotokozera ndi American Iron and Steel Institute, chidzaonedwa kuti ndi aloyi pamene kuchuluka kwakukulu komwe kumaperekedwa kwa zomwe zili ndi alloying kumadutsa malire awa: Manganese, 1.65%, silicon, 0.60%, mkuwa , 0.60%, kapena momwe mulingo wotsimikizika kapena kuchuluka pang'ono kwa chilichonse mwazinthu zotsatirazi zafotokozedwa kapena zofunikira mkati mwa gawo lovomerezeka la zitsulo zopangira aloyi: aluminium, chromium mpaka 3.99%, cobalt, columbium, molybdenum, faifi tambala, titaniyamu, tungsten, vanadium, zirconium kapena zinthu zina zilizonse zowonjezera zomwe zimawonjezeredwa kuti mupeze zomwe mukufuna. |
Type 3 Bolts | ||
---|---|---|
Chinthu | Miyezo 1/2 mpaka 3/4 | Kukula pamwamba 3/4 |
Mpweya | 0.20 - 0.53% | 0.30 - 0.53% |
Manganese, min | 0.40% | 0.40% |
Phosphorous, max | 0.035% | 0.035% |
Sulphur, max | 0.040% | 0.040% |
Mkuwa | 0.20 - 0.60% | 0.20 - 0.60% |
Chromium, min | 0.45% | 0.45% |
Nickel, min | 0.20% | 0.20% |
or | ||
Molybdenum, min | 0.15% | 0.15% |
A490 Analimbikitsa Hardware
Mtedza | Ochapira | |||
---|---|---|---|---|
Mtundu 1 | Mtundu 3 | Mtundu 1 | Mtundu 3 | |
A563DH | A563DH3 | F436-1 | F436-3 | |
Zindikirani: Mtedza wogwirizana ndi A194 Grade 2H ndi malo abwino oti mugwiritse ntchito ndi ma bolt olemera a A490 a hex. Tsatirani ulalo wa Tchati cha ASTM A563 Nut Compatibility Chart. |
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