{"id":2949,"date":"2026-09-15T11:32:04","date_gmt":"2026-09-15T08:32:04","guid":{"rendered":"https:\/\/www.defencemetal.com\/index.php\/h11\/"},"modified":"2026-09-25T16:30:41","modified_gmt":"2026-09-25T13:30:41","slug":"h11","status":"publish","type":"page","link":"https:\/\/www.defencemetal.com\/index.php\/h11\/","title":{"rendered":"H11"},"content":{"rendered":"

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H11 \/ AMS 6487 \/ AMS 6437<\/h1>\n
DEFENCE METAL<\/span><\/p>\n
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H11<\/div>\n
UNS T20811 \u00b7 W.Nr. 1.2343 \u00b7 EN ISO 4957 X37CrMoV5-1 (eski DIN ad\u0131 X38CrMoV5-1) \u00b7 JIS SKD6 \u00b7 BS BH11 \u00b7 ~%5 Cr \u2013 %1,3 Mo \u2013 %0,4 V \u2013 C ~%0,37. %5 KROMLU SICAK \u0130\u015e TAKIM \u00c7EL\u0130\u011e\u0130D\u0130R. EN ISO 4957 band\u0131 (1.2343): C %0,33-0,41 \u2013 Si %0,80-1,20 \u2013 Mn %0,25-0,50 \u2013 Cr %4,80-5,50 \u2013 Mo %1,10-1,50 \u2013 V %0,30-0,50 \u2013 P en \u00e7ok %0,030 \u2013 S en \u00e7ok %0,020. ASTM A681 \/ AISI H11 band\u0131 AYNI DE\u011e\u0130LD\u0130R: C %0,33-0,43 \u2013 Mn %0,20-0,50\/0,60 \u2013 Si %0,80-1,20\/1,25 \u2013 Cr %4,75-5,50 \u2013 Mo %1,10-1,60 \u2013 V %0,30-0,60. \u0130ki bant karbon tavan\u0131nda (EN %0,41, ASTM %0,43) ve vanadyum tavan\u0131nda (EN %0,50, ASTM %0,60) \u00f6rt\u00fc\u015fmez; 1.2343 sertifikas\u0131 ile gelen mal otomatik olarak ASTM A681 H11 sipari\u015fine uygun say\u0131lmaz. HAVACILIK H-11’\u0130 (AMS 6487 \/ 6437) \u00dc\u00c7\u00dcNC\u00dc B\u0130R BANTTIR: C %0,38-0,43, nominal 5,0Cr \u2013 1,3Mo \u2013 0,50V; AMS 6487 ayr\u0131ca SARF ELEKTROTLU VAKUM YEN\u0130DEN ERG\u0130TME (CEVM\/VAR) \u015fart\u0131 ta\u015f\u0131r. PASLANMAZ DE\u011e\u0130LD\u0130R. \u00c7\u00d6KELME SERTLE\u015eMEZ; H900 \/ H1025 \/ H1150 benzeri bir ya\u015fland\u0131rma kademesi YOKTUR. Sertle\u015fme yolu: \u00f6stenitleme \u2192 hava\/ya\u011f\/tuz banyosu ile sertle\u015ftirme \u2192 \u00c7\u0130FT (tercihen \u00dc\u00c7L\u00dc) TEMPERLEME. Temperleme e\u011frisinde \u0130K\u0130NC\u0130L SERTLE\u015eME vard\u0131r: 450-510 \u00b0C civar\u0131nda sertlik yeniden y\u00fckselir.<\/div>\n
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Kar\u0131\u015ft\u0131r\u0131lmamas\u0131 gerekenler<\/div>\n

AISI 4140<\/a><\/div>\n<\/div>\n

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Ne i\u00e7in<\/div>\n
\u0130ki ayr\u0131 i\u015f i\u00e7in al\u0131n\u0131r ve bu iki i\u015f ayn\u0131 malzeme kalitesiyle kar\u015f\u0131lanmaz. (1) SICAK \u0130\u015e TAKIMI: bas\u0131n\u00e7l\u0131 d\u00f6k\u00fcm kal\u0131b\u0131, d\u00f6vme kal\u0131b\u0131, ekstr\u00fczyon tak\u0131m\u0131 (liner, stem, konteyner g\u00f6mle\u011fi, bask\u0131 pabucu, mandrel, matris tutucu), s\u0131cak kesme b\u0131\u00e7a\u011f\u0131, s\u0131cak z\u0131mba, plastik enjeksiyon kal\u0131b\u0131 \u2014 yani kal\u0131b\u0131n\u2026<\/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 bazl\u0131 temin edilmektedir. D\u0130KKAT: AMS kapsam\u0131 forma g\u00f6re ayr\u0131\u015f\u0131r \u2014 AMS 6487 yaln\u0131zca \u00e7ubuk, d\u00f6vme ve d\u00f6vme k\u00fct\u00fc\u011f\u00fcn\u00fc, AMS 6437 yaln\u0131zca sac, \u015ferit ve levhay\u0131 kapsar; boru i\u00e7in do\u011frulanm\u0131\u015f bir H-11 AMS numaras\u0131 bulunamam\u0131\u015ft\u0131r (standart haritas\u0131na bak\u0131n\u0131z).<\/div>\n<\/div>\n
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Standartlar<\/div>\n
AMS (Y\u00dcR\u00dcRL\u00dcKTE, tek tek do\u011frulanm\u0131\u015f): 6487 \u2014 ‘Steel, Bars, Forgings, and Forging Stock 5.0Cr – 1.3Mo – 0.50V (0.38 – 0.43C) (H-11) Consumable Electrode Vacuum Re-Melted’, premium u\u00e7ak kalitesi, g\u00fcncel revizyon M\/2021 (N revizyonu SAE’de \u00e7al\u0131\u015fma halinde) \u00b7 6437 \u2014 ‘Steel, Sheet, Strip, and Plate, 5.0Cr – 1.3Mo – 0.50V (0.38 – 0.43C) (H-11), Aircraft Quality’, g\u00fcncel revizyon L\/2025 (\u00f6nceki K\/2020). AMS (\u0130PTAL ED\u0130LM\u0130\u015e \u2014 S\u0130PAR\u0130\u015eE YAZILMAZ): 6485H\/1989 ‘Steel Bars and Forgings, 5.0Cr 1.3Mo 0.50V (0.38-0.43C)’ \u2014 Ekim 2006’da \u0130PTAL, AMS 6487<\/b> ile kar\u015f\u0131lan\u0131r \u00b7 6488H ‘Steel, Bars and Forgings 5.0Cr 1.3Mo 0.50V (0.38-0.43C)’ (premium kalite) \u2014 Ocak 2008’de \u0130PTAL; ANSI kayd\u0131 ‘benzer ancak zorunlu olarak ayn\u0131 olmayan \u00fcr\u00fcnler AMS 6487<\/b>‘de kapsanm\u0131\u015ft\u0131r’ notunu ta\u015f\u0131r. ASTM: A681 \u2014 ‘Standard Specification for Tool Steels Alloy’; kapsam\u0131 s\u0131cak veya so\u011fuk i\u015flenmi\u015f \u00e7ubuk, levha, sac, \u015ferit, filma\u015fin, tel ve d\u00f6vmedir. EN \/ ISO: EN ISO 4957:2018 ‘Tool steels’ (ISO 4957:2018, 3. bask\u0131, 2018-06) \u2014 1.2343 \/ X37CrMoV5-1. D\u0130\u011eER ULUSAL: JIS G4404 SKD6 \u00b7 BS 4659 BH11. SEKT\u00d6REL: NADCA #207 kabul ve \u0131s\u0131l i\u015flem kriterleri (B\u00d6HLER W300 ISOBLOC sayfas\u0131 NADCA D1830 \/ #207 atamas\u0131n\u0131 ta\u015f\u0131r).
TAKIM \u00c7EL\u0130\u011e\u0130 H11 \u0130LE HAVACILIK H-11’\u0130 AYNI \u015eEY DE\u011e\u0130LD\u0130R. Fark \u00fc\u00e7 noktadad\u0131r:
\n1) KARBON BANDI. ASTM A681 H11 band\u0131 C %0,33-0,43; AMS 6487 ve AMS 6437 ba\u015fl\u0131klar\u0131ndaki band C %0,38-0,43’t\u00fcr. Havac\u0131l\u0131k band\u0131 tak\u0131m \u00e7eli\u011fi band\u0131n\u0131n ALT YARISINI DI\u015eARIDA BIRAKIR.<\/span><\/div>\n<\/div>\n
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Art\u0131s\u0131<\/div>\n
Tek en \u00f6nemli pratik \u00fcst\u00fcnl\u00fc\u011f\u00fc \u0130K\u0130NC\u0130L SERTLE\u015eMED\u0130R: temperleme s\u0131cakl\u0131\u011f\u0131 y\u00fckseldik\u00e7e sertlik \u00f6nce d\u00fc\u015fer, sonra YEN\u0130DEN Y\u00dcKSEL\u0130R. Lucefin’in 1020 \u00b0C’den ya\u011fa verilmi\u015f numunede \u00f6l\u00e7t\u00fc\u011f\u00fc e\u011fri \u015fudur: 250 \u00b0C’de 52 HRC, 350 \u00b0C’de 53,5 HRC, 450 \u00b0C’de 55,5 HRC, 510 \u00b0C’de 56 HRC.<\/div>\n<\/div>\n
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Kaynak<\/div>\n
KAYNAK ED\u0130LEB\u0130L\u0130R, ANCAK Y\u00dcKSEK \u00d6N TAV ZORUNLUDUR ve par\u00e7an\u0131n teslim durumu kaynak karar\u0131n\u0131 belirler. \u00d6N TAV: B\u00d6HLER’in tak\u0131m kayna\u011f\u0131 el kitab\u0131 1.2343 \/ W300 s\u0131n\u0131f\u0131 i\u00e7in yumu\u015fak tavl\u0131 durumda 350-400 \u00b0C, sertle\u015ftirilmi\u015f durumda 400-450 \u00b0C verir.<\/div>\n<\/div>\n
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S\u0131n\u0131rlar\u0131<\/div>\n
1) PASLANMAZ DE\u011e\u0130LD\u0130R. Krom oran\u0131 %4,75-5,50’dir ve bu oran pasif tabaka olu\u015fturmaya yetmez. Ya\u011flama, kaplama veya ba\u015fka bir koruma olmadan nemli ortamda paslan\u0131r; deniz ve klor\u00fcrl\u00fc ortam i\u00e7in uygun de\u011fildir.<\/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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