{"id":6218,"date":"2026-09-25T19:52:55","date_gmt":"2026-09-25T16:52:55","guid":{"rendered":"https:\/\/www.defencemetal.com\/index.php\/2026\/09\/25\/custom-455-17-4ph-farki\/"},"modified":"2026-09-30T10:44:49","modified_gmt":"2026-09-30T07:44:49","slug":"custom-455-17-4ph-farki","status":"publish","type":"post","link":"https:\/\/www.defencemetal.com\/index.php\/2026\/09\/25\/custom-455-17-4ph-farki\/","title":{"rendered":"Custom 455 ile 17-4PH Aras\u0131ndaki Fark Nedir?"},"content":{"rendered":"

Custom 455<\/strong> ve 17-4PH<\/strong> ikisi de \u00e7\u00f6kelme sertle\u015fmeli (PH) martenzitik paslanmaz \u00e7eliktir: \u00e7\u00f6zeltiye al\u0131n\u0131r, sonra ya\u015fland\u0131r\u0131larak sertle\u015ftirilir. Aralar\u0131ndaki fark, mukavemet ile korozyon direnci aras\u0131nda yap\u0131lan tercihtedir.<\/p>\n

Temel ayr\u0131m: krom<\/h3>\n

17-4PH’nin kromu %15,00 – 17,50<\/strong>‘dir. Custom 455’in kromu ise %11,00 – 12,50<\/strong> — yani belirgin \u015fekilde daha d\u00fc\u015f\u00fck. Buna kar\u015f\u0131l\u0131k Custom 455 nikeli %7,50 – 9,50’ye \u00e7\u0131kar\u0131r ve titanyum<\/strong> ile sertle\u015fir; 17-4PH ise bak\u0131r ve niyobyumla sertle\u015fir.<\/p>\n

Bunun sonucunu Carpenter Technology’nin kendi iki veri sayfas\u0131 a\u00e7\u0131k\u00e7a g\u00f6steriyor: Custom 455’in genel korozyon direncini Tip 430 ile, Custom 630’unkini (17-4PH) ise Tip 302\/304 ile k\u0131yasl\u0131yor.<\/strong> Ayn\u0131 \u00fcretici, iki dok\u00fcman, net bir s\u0131ralama.<\/p>\n

K\u0131sacas\u0131: Custom 455 mukavemeti kromdan feragat ederek sat\u0131n al\u0131r.<\/strong><\/p>\n

Rakamlarla kar\u015f\u0131la\u015ft\u0131rma<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u00d6ZELL\u0130K<\/th>\nCustom 455 (S45500)<\/th>\n17-4PH (S17400)<\/th>\n<\/tr>\n<\/thead>\n
Krom (Cr)<\/strong><\/td>\n%11,00 – 12,50<\/strong><\/td>\n%15,00 – 17,50<\/strong><\/td>\n<\/tr>\n
Nikel (Ni)<\/strong><\/td>\n%7,50 – 9,50<\/strong><\/td>\n%3,00 – 5,00<\/strong><\/td>\n<\/tr>\n
Bak\u0131r (Cu)<\/td>\n%1,50 – 2,50<\/td>\n%3,00 – 5,00<\/td>\n<\/tr>\n
Niyobyum + Tantal (Nb+Ta)<\/td>\n%0,10 – 0,50<\/td>\n%0,15 – 0,45<\/td>\n<\/tr>\n
Molibden (Mo)<\/td>\nmax %0,50<\/td>\nbelirtilmez<\/td>\n<\/tr>\n
Mangan (Mn)<\/td>\nmax %0,50<\/td>\nmax %1,00<\/td>\n<\/tr>\n
Silisyum (Si)<\/td>\nmax %0,50<\/td>\nmax %1,00<\/td>\n<\/tr>\n
Karbon (C)<\/td>\nmax %0,05 (\u00fcretici) \/ max %0,03 (ASTM A564)<\/td>\nmax %0,07<\/td>\n<\/tr>\n
Fosfor (P)<\/td>\nmax %0,040 (\u00fcretici) \/ max %0,015 (ASTM)<\/td>\nmax %0,040<\/td>\n<\/tr>\n
K\u00fck\u00fcrt (S)<\/td>\nmax %0,030 (\u00fcretici) \/ max %0,015 (ASTM)<\/td>\nmax %0,030<\/td>\n<\/tr>\n
ASTM A564 tipi<\/td>\nXM-16<\/td>\n630<\/td>\n<\/tr>\n
Sertle\u015fme mekanizmas\u0131<\/td>\ntitanyum \u00e7\u00f6kelmesi<\/td>\nbak\u0131r \u00e7\u00f6kelmesi<\/td>\n<\/tr>\n
Genel korozyon direnci<\/td>\nTip 430 seviyesinde<\/td>\nTip 302\/304 seviyesinde<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Custom 455’in mekanik de\u011ferleri<\/h3>\n

A\u015fa\u011f\u0131dakiler ASTM A564 Tip XM-16’n\u0131n \u015fartname minimumlar\u0131d\u0131r<\/strong> — tipik de\u011fer de\u011fil, garanti edilen alt s\u0131n\u0131rd\u0131r. Standard\u0131n \u00fc\u00e7 ayr\u0131 bask\u0131s\u0131n\u0131n (2004, 2007\/ASME SA-564, 2019) reprod\u00fcksiyonlar\u0131 kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131; rakamlar \u00fc\u00e7 bask\u0131da da birebir ayn\u0131 \u00e7\u0131kt\u0131. Ge\u00e7erlilik: 150 mm’ye kadar \u00e7ubuk ve profil, boyuna y\u00f6n.<\/p>\n

\n\n\n\n\n\n\n\n\n
DURUM<\/th>\nRm min<\/th>\nRp0,2 min<\/th>\nA min<\/th>\nKesit daralmas\u0131 min<\/th>\nSertlik min<\/th>\n<\/tr>\n<\/thead>\n
H900<\/strong><\/td>\n1620 MPa (235 ksi)<\/td>\n1515 MPa (220 ksi)<\/td>\n%8<\/td>\n%30<\/td>\n47 HRC \/ 444 HBW<\/td>\n<\/tr>\n
H950<\/strong><\/td>\n1515 MPa (220 ksi)<\/td>\n1415 MPa (205 ksi)<\/td>\n%10<\/td>\n%40<\/td>\n44 HRC \/ 415 HBW<\/td>\n<\/tr>\n
H1000<\/strong><\/td>\n1415 MPa (205 ksi)<\/td>\n1275 MPa (185 ksi)<\/td>\n%10<\/td>\n%40<\/td>\n40 HRC \/ 363 HBW<\/td>\n<\/tr>\n
Durum A (\u00e7\u00f6zeltiye al\u0131nm\u0131\u015f)<\/td>\n\u015fart yok<\/td>\n\u015fart yok<\/td>\n—<\/td>\n—<\/td>\nmaks 331 HBW \/ 36 HRC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n

ASTM A564’te XM-16 i\u00e7in H1050 durumu YOKTUR.<\/p>\n

Standard\u0131n \u00fc\u00e7 bask\u0131s\u0131n\u0131n \u00fc\u00e7\u00fc de XM-16 i\u00e7in yaln\u0131z H900, H950 ve H1000<\/strong> tan\u0131mlar. Piyasada dola\u015fan H1050 rakamlar\u0131 \u00fcretici tipik<\/em> tablolar\u0131ndan gelir, \u015fartname minimumu de\u011fildir. Sipari\u015fe “H1050, ASTM A564’e g\u00f6re” yazmak kar\u015f\u0131l\u0131ks\u0131zd\u0131r.<\/p>\n<\/div>\n

Is\u0131l i\u015flem<\/h3>\n

\u00c7\u00f6zeltiye alma 830 ± 15 °C (1525 ± 25 °F), h\u0131zl\u0131 so\u011futma<\/strong>. Ya\u015fland\u0131rma tek kademelidir ve d\u00f6rt saat s\u00fcrer:<\/p>\n

\n\n\n\n\n\n\n\n
DURUM<\/th>\nYa\u015fland\u0131rma s\u0131cakl\u0131\u011f\u0131<\/th>\nS\u00fcre<\/th>\nSo\u011futma<\/th>\n<\/tr>\n<\/thead>\n
H900<\/td>\n480 °C (900 °F)<\/td>\n4 saat<\/td>\nhavada<\/td>\n<\/tr>\n
H950<\/td>\n510 °C (950 °F)<\/td>\n4 saat<\/td>\nhavada<\/td>\n<\/tr>\n
H1000<\/td>\n540 °C (1000 °F)<\/td>\n4 saat<\/td>\nhavada<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

17-4PH’nin H1150M gibi \u00e7ift kademeli \u00e7evrimlerinin aksine burada so\u011futma (refrigeration) veya ikinci kademe gerekmez. 540 °C \/ 4 saat \u00e7evriminin sertle\u015ftirme mekanizmas\u0131 — bak\u0131rca zengin \u00e7\u00f6keltiler, Ni₃Ti (η) ve G-faz\u0131 — Pekin Teknoloji \u00dcniversitesi’nin 2026 tarihli bir \u00e7al\u0131\u015fmas\u0131nda ba\u011f\u0131ms\u0131z olarak incelenmi\u015ftir.<\/p>\n

Sipari\u015f verirken: iki farkl\u0131 kimya seti dola\u015f\u0131yor<\/h3>\n

Custom 455 i\u00e7in iki ayr\u0131 bile\u015fim s\u0131n\u0131r\u0131 yay\u0131mlan\u0131r ve aralar\u0131ndaki fark sertifikay\u0131 etkiler:<\/p>\n

\n\n\n\n\n\n\n\n\n
ELEMENT<\/th>\nASTM A564 XM-16 \/ ASTM F899<\/th>\nCarpenter veri sayfas\u0131<\/th>\n<\/tr>\n<\/thead>\n
Karbon (C)<\/td>\nmax %0,03<\/td>\nmax %0,05<\/td>\n<\/tr>\n
Fosfor (P)<\/td>\nmax %0,015<\/td>\nmax %0,040<\/td>\n<\/tr>\n
K\u00fck\u00fcrt (S)<\/td>\nmax %0,015<\/td>\nmax %0,030<\/td>\n<\/tr>\n
Titanyum (Ti)<\/td>\n%0,90 – 1,40<\/td>\n%0,80 – 1,40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Yani Carpenter’\u0131n kendi tip analizine g\u00f6re sertifikal\u0131 bir malzeme ASTM A564 XM-16’dan kalabilir.<\/strong> Hangisine g\u00f6re istedi\u011finizi sipari\u015fe yaz\u0131n.<\/p>\n

Bir d\u00fczeltme de gerekiyor: bu ala\u015f\u0131m tek kaynakl\u0131 de\u011fildir. Universal Stainless<\/strong> ve Fort Wayne Metals<\/strong> da VIM+VAR yoluyla ergitiyor, ala\u015f\u0131m\u0131n kendi Avrupa malzeme numaras\u0131 var (1.4543 \/ X3CrNiCuTiNb12-9<\/strong>) ve ASTM F899 Class 5<\/strong> kapsam\u0131nda cerrahi alet malzemesi olarak listeleniyor. Do\u011fru ifade “tek kaynakl\u0131” de\u011fil, “s\u0131n\u0131rl\u0131 say\u0131da ergiticisi olan”<\/strong>d\u0131r.<\/p>\n

Bu tablonun okunu\u015fu.<\/strong> Kaynak ad\u0131 yaz\u0131lmayan sat\u0131rlar en az d\u00f6rt ba\u011f\u0131ms\u0131z kurulu\u015fta do\u011frulanm\u0131\u015ft\u0131r. Parantez i\u00e7inde kurulu\u015f ad\u0131 ge\u00e7en sat\u0131rlar daha az say\u0131da kaynakta bulunabildi\u011fi i\u00e7in kayna\u011f\u0131yla birlikte veriliyor. Do\u011frulayamad\u0131\u011f\u0131m\u0131z hi\u00e7bir de\u011fer yaz\u0131lmam\u0131\u015ft\u0131r.<\/p>\n

Is\u0131l i\u015flem<\/h3>\n

17-4PH:<\/strong> \u00e7\u00f6zeltiye alma 1038 ± 14 °C<\/strong>, ard\u0131ndan 32 °C alt\u0131na so\u011futma (bu ad\u0131m zorunludur). Ya\u015fland\u0131rma s\u0131cakl\u0131klar\u0131 durumu belirler: H900 = 482 °C, H1025 = 551–552 °C, H1075 = 580 °C, H1100 = 593–595 °C, H1150 = 620–621 °C.<\/strong><\/p>\n

Custom 455:<\/strong> tek kademeli ya\u015fland\u0131rma ile sertle\u015fir; so\u011futma (refrigeration) veya \u00e7ift i\u015flem gerektirmez. 17-4PH’nin H1150M gibi \u00e7ift kademeli \u00e7evrimlerine kar\u015f\u0131l\u0131k bu bir i\u015flem sadeli\u011fi avantaj\u0131d\u0131r.<\/p>\n

H900 tuza\u011f\u0131 — 17-4PH al\u0131rken en \u00f6nemli karar<\/h3>\n
\n

En y\u00fcksek sertlik her zaman do\u011fru tercih de\u011fildir.<\/p>\n

Carpenter’\u0131n kendi tipik de\u011ferleri, ya\u015fland\u0131rma s\u0131cakl\u0131\u011f\u0131 y\u00fckseldik\u00e7e toklu\u011fun nas\u0131l artt\u0131\u011f\u0131n\u0131 g\u00f6steriyor: H900’de 21 J, H1150’de 75 J, H1150M’de 136 J<\/strong> — akma dayan\u0131m\u0131 ise s\u0131ras\u0131yla 1262, 869 ve 600 MPa’ya iniyor. Rolled Alloys da ayn\u0131 e\u011filimi bildiriyor.<\/p>\n

Daha kritik olan\u0131 gerilmeli korozyon \u00e7atlamas\u0131d\u0131r. Cleveland-Cliffs’in deniz ortam\u0131 testlerinde, akma dayan\u0131m\u0131n\u0131n %90’\u0131nda y\u00fcklenmi\u015f kaynakl\u0131 numunelerde H900 68 g\u00fcn i\u00e7inde k\u0131r\u0131ld\u0131; H1025, H1075 ve H1150 ise 25 y\u0131l\u0131 a\u015fk\u0131n s\u00fcrede hi\u00e7 k\u0131r\u0131lmad\u0131.<\/strong> Carpenter, Cleveland-Cliffs ve B\u00d6HLER ayn\u0131 kural\u0131 koyuyor: mukavemet \u015fart\u0131n\u0131 kar\u015f\u0131layan en y\u00fcksek<\/em> s\u0131cakl\u0131kta ya\u015fland\u0131r\u0131n ve hi\u00e7bir ko\u015fulda 552 °C’nin alt\u0131na inmeyin.<\/strong><\/p>\n<\/div>\n

Sipari\u015f verirken dikkat<\/h3>\n
\n

D\u00f6rt nokta<\/p>\n

1.<\/strong> Custom 455® Carpenter Technology’nin tescilli markas\u0131d\u0131r — tek kaynakl\u0131 bir ala\u015f\u0131md\u0131r. 17-4PH ise d\u00fcnya \u00e7ap\u0131nda \u00e7ok kaynakl\u0131d\u0131r. Bu bir tedarik s\u00fcresi ve ikinci kaynak meselesidir.<\/p>\n

2.<\/strong> Carpenter’\u0131n tip analizine g\u00f6re sertifikal\u0131 Custom 455, karbon, fosfor, k\u00fck\u00fcrt ve titanyumda ASTM A564 XM-16’dan kalabilir.<\/strong> Hangisine g\u00f6re istedi\u011finizi yaz\u0131n.<\/p>\n

3.<\/strong> H1150M ile H1150D ayn\u0131 \u015fey de\u011fildir. H1150M 760 °C\/2 saat + 621 °C\/4 saattir; Rolled Alloys H1150D’yi 621 °C’de iki kez 4 saat olarak tan\u0131ml\u0131yor. Farkl\u0131 \u00e7evrimler, farkl\u0131 \u00f6zellikler.<\/p>\n

4.<\/strong> Durum A (yaln\u0131zca \u00e7\u00f6zeltiye al\u0131nm\u0131\u015f) bir servis durumu de\u011fildir. 17-4PH kullan\u0131lmadan \u00f6nce mutlaka ya\u015fland\u0131r\u0131lmal\u0131d\u0131r.<\/p>\n<\/div>\n

Hangisi sizin i\u015finiz i\u00e7in?<\/h3>\n

Custom 455:<\/strong> \u00e7ok y\u00fcksek mukavemetin \u00f6ncelikli, korozyon ortam\u0131n\u0131n hafif oldu\u011fu yerler — havac\u0131l\u0131k ba\u011flant\u0131lar\u0131 ve y\u00fcksek gerilmeli miller, cerrahi ve ortopedik el aletleri, matkap u\u00e7lar\u0131, tornavidalar.<\/p>\n

17-4PH:<\/strong> mukavemet ile korozyon direncinin birlikte gerekti\u011fi yerler — havac\u0131l\u0131k ve f\u00fcze fitingleri, petrol sahas\u0131 vana bile\u015fenleri, pompa ve vana milleri, di\u015fliler, ba\u011flant\u0131 elemanlar\u0131, kimyasal proses ekipman\u0131, deniz \u015faftlar\u0131, g\u0131da i\u015fleme.<\/p>\n

G\u00f6sterimler, standartlar ve AMS kar\u015f\u0131l\u0131klar\u0131<\/h3>\n

Ayn\u0131 \u00e7elik, hangi sistemde konu\u015ftu\u011funuza g\u00f6re farkl\u0131 isimle an\u0131l\u0131r. Sipari\u015f ve sertifika kar\u0131\u015f\u0131kl\u0131klar\u0131n\u0131n \u00e7o\u011fu buradan \u00e7\u0131kar, o y\u00fczden k\u0131saca \u00f6zetleyelim:<\/p>\n