Alloy steels an tsara su ta hanyar lambobin lambobi huɗu na AISI kuma sun ƙunshi nau'ikan ƙarfe daban-daban, kowanne tare da abun da ke ciki wanda ya wuce iyakokin B, C, Mn, Mo, Ni, Si, Cr, da Va da aka saita don karafa na carbon.
AISI 4140 gami karfe ne chromium-, molybdenum-, da manganese-dauke da low gami karfe. Yana da ƙarfin gajiya mai ƙarfi, abrasion da juriya mai tasiri, tauri, da ƙarfin torsional. Takardar bayanan mai zuwa yana ba da bayyani na AISI 4140 alloy karfe.
Ƙasa | China | Japan | Jamus | Amurka | Birtaniya |
Daidaitawa | GB/T 3077 | Saukewa: G4105 | DIN (W-Nr.) EN 10250 |
AISI/ASTM ASTM A29 |
Farashin BS970 |
Daraja | 42CrMo | Saukewa: SCM440 | 42crmo4 /1.7225 | 4140 | EN19/709M40 |
Daraja | C | Si | Mn | P | S | Cr | Mo | Ni |
42CrMo | 0.38-0.45 | 0.17-0.37 | 0.5-0.80 | ≤0.035 | ≤0.035 | 0.9-1.2 | 0.15-0.25 | - |
Saukewa: SCM440 | 0.38-0.43 | 0.15-0.35 | 0.6-0.85 | ≤0.035 | ≤0.04 | 0.9-1.2 | 0.15-0.30 | - |
42crmo4 /1.7225 | 0.38-0.45 | ≤ 0.4 | 0.6-0.9 | ≤0.025 | ≤0.035 | 0.9-1.2 | 0.15-0.30 | - |
4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤0.035 | ≤0.04 | 0.8-1.1 | 0.15-0.25 | - |
EN19/709M40 | 0.35-0.45 | 0.15-0.35 | 0.5-0.80 | ≤0.035 | ≤0.035 | 0.9-1.5 | 0.2-0.40 | - |
Daraja | Ƙarfin ƙarfi σb (MPa) |
Ƙarfin bayarwa σs (MPa) |
Tsawaitawa δ5 (%) |
Ragewa ψ (%) |
Ƙimar Tasiri Akv (J) |
Tauri |
4140 | ≥ 1080 | ≥930 | ≥12 | ≥45 | ≥63 | 28-32HRC |
Girman | Zagaye | Tsawon 6-1200 mm |
Plate /Flat/Toshe | Kauri 6mm-500mm |
|
Nisa 20mm-1000mm |
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Maganin zafi | An daidaita; Annealed; An kashe ; Haushi | |
Yanayin saman | Baƙar fata; Bawon; goge; Injin; Nika; Juya; Milled | |
Yanayin bayarwa | Jarumi; Zafafan birgima; Zane sanyi | |
Gwaji | Ƙarfin ƙarfi, Ƙarfin Haɓaka, elongation, yanki na raguwa, ƙimar tasiri, taurin, girman hatsi, gwajin ultrasonic, binciken Amurka, gwajin ƙwayar magnetic, da dai sauransu. | |
Sharuɗɗan biyan kuɗi | T/T;L/C;/Kudi gram/ Paypal | |
Sharuɗɗan ciniki | FOB; CIF; C&F; da dai sauransu. | |
Lokacin bayarwa | 30-45 kwanaki | |
Aikace-aikace | AISI 4140 karfe sami da yawa aikace-aikace a matsayin forgings ga Aerospace, mai da gas, mota, aikin gona da tsaro masana'antu da dai sauransu Hankula aikace-aikace na 4140 karfe amfani sun hada da: jabu gears, spindles, gyarawa, jigs, kwala, Axles, conveyor sassa, hankaka sanduna, shiga sassa, shafts, sprockets, studs, pinions, famfo shafts, raguna, da zobe gears da dai sauransu |
Abubuwan halayen jiki na AISI 4140 gami da ƙarfe an haskaka su a cikin tebur mai zuwa.
Kayayyaki | Ma'auni | Imperial |
---|---|---|
Yawan yawa | 7.85 g /cm3 | 0.284 lb / in³ |
Wurin narkewa | 1416°C | 2580°F |
Tebur mai zuwa yana fayyace kaddarorin inji na AISI 4140 gami karfe.
Kayayyaki | Ma'auni | Imperial |
---|---|---|
Ƙarfin ƙarfi | 655 MPa | 95000 psi |
Ƙarfin bayarwa | 415 MPa | 60200 psi |
Modules mai girma (na al'ada don karfe) | 140 GPA | 20300 ku |
Shear modulus (na al'ada don karfe) | 80 gpa | 11600 ku |
Na roba modules | 190-210 GPA | 27557-30458 ksi |
Rabon Poisson | 0.27-0.30 | 0.27-0.30 |
Tsawon lokacin hutu (a cikin 50 mm) | 25.70% | 25.70% |
Hardness, Brinell | 197 | 197 |
Hardness, Knoop (an juyo daga taurin Brinell) | 219 | 219 |
Hardness, Rockwell B (an juyo daga taurin Brinell) | 92 | 92 |
Hardness, Rockwell C (an juyo daga taurin Brinell. Ƙimar da ke ƙasa da kewayon HRC na al'ada, don dalilai na kwatanta kawai) | 13 | 13 |
Hardness, Vickers (an juyo daga taurin Brinell) | 207 | 207 |
Machinability (dangane da AISI 1212 azaman 100 machinability) | 65 | 65 |
Ana ba da kaddarorin thermal na AISI 4140 gami da ƙarfe a cikin tebur mai zuwa.
Kayayyaki | Ma'auni | Imperial |
---|---|---|
Ƙididdigar faɗaɗawar thermal (@ 0-100°C/32-212°F) | 12.2µm/m°C | 6.78 µin / in°F |
Ƙarƙashin zafi (@ 100°C) | 42.6 W / mK | 296 BTU a cikin /hr.ft².°F |
Sauran nadi daidai da AISI 4140 gami karfe an jera su a cikin tebur mai zuwa.
Farashin 6349 | ASTM A193 (B7, B7M) | ASTM A506 (4140) | ASTM A752 (4140) |
Farashin 6381 | ASTM A194 (7, 7M) | ASTM A513 | Saukewa: ASTM A829 |
Farashin 6382 | ASTM A29 (4140) | ASTM A513 (4140) | SAE J1397 (4140) |
Farashin 6390 | ASTM A320 (L7, L7M, L7D) | ASTM A519 (4140) | SAE J404 (4140) |
Farashin 6395 | ASTM A322 (4140) | ASTM A646 (4140) | SAE J412 (4140) |
Farashin 6529 | ASTM A331 (4140) | ASTM A711 |
AISI 4140 alloy karfe yana da kyau machinability a cikin annealed yanayin.
Samar daAISI 4140 gami karfe yana da babban ductility. Ana iya kafa shi ta amfani da fasaha na al'ada a cikin yanayin da aka shafe. Yana buƙatar ƙarin matsi ko ƙarfi don kafawa saboda ya fi ƙarfin karafa na carbon.
WaldaAISI 4140 gami karfe za a iya welded ta amfani da duk na al'ada dabaru. Duk da haka, kayan aikin injiniya na wannan karfe za su yi tasiri idan an haɗa shi a cikin yanayin zafi, kuma ya kamata a yi maganin zafi bayan walda.
AISI 4140 gami karfe yana mai zafi a 845°C (1550°F) sannan a kashe mai. Kafin taurin, ana iya daidaita shi ta hanyar dumama shi a 913°C (1675°F) na dogon lokaci, sannan sanyaya iska.
ƘirƙiraAISI 4140 karfen ƙarfe an ƙirƙira shi a 926 zuwa 1205°C (1700 zuwa 2200°F)
AISI 4140 gami karfe na iya yin zafi aiki a 816 zuwa 1038°C (1500 zuwa 1900°F)
AISI 4140 gami karfe za a iya yi sanyi aiki ta amfani da na al'ada hanyoyin a cikin annealed yanayin.
AISI 4140 gami da karfe ana goge shi a 872°C (1600°F) sannan kuma a hankali sanyaya a cikin tanderun.
AISI 4140 gami karfe za a iya zafinsa a 205 zuwa 649°C (400 zuwa 1200°F) dangane da taurin da ake so. Za a iya ƙara ƙarfin ƙarfe idan yana da ƙananan zafin jiki. Misali, ana iya samun ƙarfin juzu'i na 225 ksi ta yanayin zafi a 316°C (600°F), kuma ana iya samun ƙarfin ƙarfi na 130 ksi ta yanayin zafi a 538°C (1000°F).
AISI 4140 gami karfe za a iya taurare ta sanyi aiki, ko dumama da quenching.