{"id":2940,"date":"2026-09-15T11:19:51","date_gmt":"2026-09-15T08:19:51","guid":{"rendered":"https:\/\/www.defencemetal.com\/index.php\/aisi-4140\/"},"modified":"2026-09-25T16:30:29","modified_gmt":"2026-09-25T13:30:29","slug":"aisi-4140","status":"publish","type":"page","link":"https:\/\/www.defencemetal.com\/index.php\/aisi-4140\/","title":{"rendered":"AISI 4140"},"content":{"rendered":"

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AISI 4140 \/ UNS G41400 \/ AMS 6349 \/ AMS 6382<\/h1>\n
DEFENCE METAL<\/span><\/p>\n
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AISI 4140<\/div>\n
UNS G41400 (u\u00e7ak kalitesi E4140 = G41406) \u00b7 W.Nr. 1.7225 \u00b7 EN 42CrMo4 (k\u00fck\u00fcrtl\u00fc t\u00fcrevi 42CrMoS4 = 1.7227) \u00b7 ASTM A29 \/ SAE J404 band\u0131: C %0,38-0,43 \u2013 Mn %0,75-1,00 \u2013 Si %0,15-0,35 \u2013 Cr %0,80-1,10 \u2013 Mo %0,15-0,25 \u2013 P en \u00e7ok %0,035 \u2013 S en \u00e7ok %0,040 \u2013 kalan Fe. N\u0130KEL \u015eARTNAME GERE\u011e\u0130 DE\u011e\u0130LD\u0130R; 4140’ta nikel art\u0131k elementtir. EN 10083-3 42CrMo4 band\u0131 AYNI DE\u011e\u0130LD\u0130R: C %0,38-0,45 \u2013 Si en \u00e7ok %0,40 \u2013 Mn %0,60-0,90 \u2013 Cr %0,90-1,20 \u2013 Mo %0,15-0,30 \u2013 P en \u00e7ok %0,025 \u2013 S en \u00e7ok %0,035. \u0130ki bant krom taraf\u0131nda tam \u00f6rt\u00fc\u015fmez (ASTM taban\u0131 %0,80, EN taban\u0131 %0,90; ASTM tavan\u0131 %1,10, EN tavan\u0131 %1,20) ve mangan taraf\u0131nda kay\u0131kt\u0131r. Bu y\u00fczden 42CrMo4 sertifikas\u0131 ile gelen mal, otomatik olarak 4140 sipari\u015fine uygun say\u0131lmaz; kabul, d\u00f6k\u00fcm analizinin her iki band\u0131 da sa\u011flamas\u0131na ba\u011fl\u0131d\u0131r. MARTENZ\u0130T\u0130K ISLAH \u00c7EL\u0130\u011e\u0130D\u0130R: \u00f6stenitleme + ya\u011fa su verme ile martenzite d\u00f6ner, sonra TEMPERLEN\u0130R. PASLANMAZ DE\u011e\u0130LD\u0130R. \u00c7\u00d6KELME SERTLE\u015eMEZ; H900 \/ H1025 \/ H1150 benzeri bir ya\u015fland\u0131rma kademesi YOKTUR.<\/div>\n
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Kar\u0131\u015ft\u0131r\u0131lmamas\u0131 gerekenler<\/div>\n

AISI 4340<\/a>H11<\/a><\/div>\n<\/div>\n

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Ne i\u00e7in<\/div>\n
Orta-y\u00fcksek mukavemetin toklukla birlikte istendi\u011fi, \u0131s\u0131l i\u015flemle sertle\u015ftirilerek kullan\u0131lan makine ve yap\u0131 par\u00e7alar\u0131 i\u00e7in al\u0131n\u0131r: mil ve \u015faft, di\u015fli, pim ve bur\u00e7, hidrolik silindir mili, kal\u0131p tutucu ve plaka, sondaj ve i\u015f makinesi par\u00e7alar\u0131, havac\u0131l\u0131kta ikincil yap\u0131 ve ba\u011flant\u0131 elemanlar\u0131.<\/div>\n<\/div>\n
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Formlar<\/div>\n
Yuvarlak \u00e7ubuk \u00b7 lama \u00b7 levha \u00b7 sac \u00b7 boru \u00b7 d\u00f6vme. T\u00fcm formlar sipari\u015f baz\u0131nda temin edilmektedir.<\/div>\n<\/div>\n
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Standartlar<\/div>\n
AMS (do\u011frulanm\u0131\u015f, d\u00fcz 4140 kimyas\u0131 0,95Cr \u2013 0,20Mo \u2013 C %0,38-0,43): 6382 (\u00e7ubuk, d\u00f6vme, ring ve d\u00f6vme \/ fla\u015f-kaynakl\u0131 ring k\u00fct\u00fc\u011f\u00fc; U\u00c7AK KAL\u0130TES\u0130; TAVLI) \u00b7 6349 (yaln\u0131zca \u00c7UBUK; NORMAL\u0130ZE) \u00b7 6529 (yaln\u0131zca \u00c7UBUK; \u00d6ZEL U\u00c7AK KAL\u0130TES\u0130 TEM\u0130ZL\u0130K; NORMAL\u0130ZE) \u00b7 6381 (MEKAN\u0130K TUBE; ilk yay\u0131n 1942, son revizyon K\/2022) \u00b7 6395 (SAC, \u015eER\u0130T, LEVHA) \u00b7 6452 (KAYNAK TEL\u0130; vakum ergitme; ortam kontroll\u00fc ambalaj) \u00b7 6390 (mekanik tube \u2014 SAE katalo\u011funda 4140 kimyas\u0131yla kay\u0131tl\u0131, y\u00fcr\u00fcrl\u00fck durumu do\u011frulanamad\u0131; standart notuna bak\u0131n\u0131z). ASTM: A29 \/ A29M (s\u0131cak haddelenmi\u015f ala\u015f\u0131ml\u0131 \u00e7ubuk genel \u015fartlar\u0131) \u00b7 A322 (standart kalite ala\u015f\u0131ml\u0131 \u00e7ubuk) \u00b7 A331 (so\u011fuk \u00e7ekilmi\u015f \u00e7ubuk) \u00b7 A519 (diki\u015fsiz mekanik tube) \u00b7 A513 (ERW mekanik tube) \u00b7 A506 (s\u0131cak haddelenmi\u015f sac ve \u015ferit) \u00b7 A711 (d\u00f6vme k\u00fct\u00fc\u011f\u00fc) \u00b7 A646 (premium kalite havac\u0131l\u0131k bloom ve k\u00fct\u00fck) \u00b7 A752 (tel \u00e7ubuk) \u00b7 A829 (ala\u015f\u0131ml\u0131 yap\u0131 levhas\u0131) \u00b7 A193 B7 ve B7M ile A194 2H \/ 2HM (c\u0131vata ve somun) \u00b7 A320 L7 ve L7M (d\u00fc\u015f\u00fck s\u0131cakl\u0131k c\u0131vata). EN \/ ISO: EN 10083-3 42CrMo4 (1.7225) ve 42CrMoS4 (1.7227) \u00b7 ISO 683-2. SAE: J404 \u00b7 J412 \u00b7 J1397.
AMS NUMARALARI B\u0130RB\u0130R\u0130N\u0130N YER\u0130NE GE\u00c7MEZ. Alt\u0131 numaran\u0131n alt\u0131s\u0131 da ayn\u0131 kimyasal band\u0131 (0,95Cr \u2013 0,20Mo \u2013 C %0,38-0,43) ta\u015f\u0131r, ama \u00dcR\u00dcN FORMU, TESL\u0130M DURUMU ve TEM\u0130ZL\u0130K SEV\u0130YES\u0130 farkl\u0131d\u0131r: 6382 TAVLI \u00e7ubuk-d\u00f6vme-ringdir ve ‘Aircraft Quality’ ibaresi ta\u015f\u0131r;<\/span><\/div>\n<\/div>\n
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Art\u0131s\u0131<\/div>\n
Tek en \u00f6nemli pratik \u00fcst\u00fcnl\u00fc\u011f\u00fc, ayn\u0131 malzemenin hem yap\u0131sal \u0131slah tablosuna hem de c\u0131vata \u015fartnamesine taban olu\u015fturmas\u0131 ve her ikisinde de say\u0131yla garanti verilmesidir.<\/div>\n<\/div>\n
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Kaynak<\/div>\n
KAYNAK ED\u0130LEB\u0130L\u0130R, ANCAK \u00d6N TAV ZORUNLUDUR ve malzemenin teslim durumu kaynak karar\u0131n\u0131 belirler. \u00d6N TAV: Welding Answers, Procedure Handbook of Arc Welding’e at\u0131fla 13 mm’ye (\u00bd in\u00e7) kadar 205-260 \u00b0C (400-500 \u00b0F), 13-50 mm (\u00bd-2 in\u00e7) aras\u0131 316-371 \u00b0C (600-700 \u00b0F) verir;<\/div>\n<\/div>\n
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S\u0131n\u0131rlar\u0131<\/div>\n
1) PASLANMAZ DE\u011e\u0130LD\u0130R. Krom oran\u0131 %0,80-1,10’dur ve pasif tabaka olu\u015fturmaz. Ya\u011flama, boya, fosfat, kaplama veya ba\u015fka bir koruma olmadan nemli ortamda paslan\u0131r; deniz ve klor\u00fcrl\u00fc ortam i\u00e7in uygun de\u011fildir.
\n2) TEMPERLEME BANDI SE\u00c7\u0130M\u0130: 250-450 \u00b0C band\u0131 yap\u0131sal \u0131slah i\u00e7in kullan\u0131lmaz.<\/div>\n<\/div>\n
TEKL\u0130F \u0130STE<\/a>T\u00fcm ala\u015f\u0131ml\u0131 \u00e7elikler →<\/a>TEKN\u0130K DETAYLAR ↓<\/span><\/div>\n
Veriler \u00fcretici veri sayfalar\u0131ndan derlenmi\u015ftir · sipari\u015f \u00f6ncesi g\u00fcncel \u015fartnameden teyit ediniz<\/div>\n<\/div>\n<\/div>\n

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