{"id":2601,"date":"2026-10-12T12:09:55","date_gmt":"2026-10-12T12:09:55","guid":{"rendered":"https:\/\/www.diecastingschina.com\/"},"modified":"2026-10-12T12:09:57","modified_gmt":"2026-10-12T12:09:57","slug":"aluminyumun-basincli-dokum-toleransi","status":"publish","type":"post","link":"https:\/\/www.diecastingschina.com\/tr\/aluminyumun-basincli-dokum-toleransi\/","title":{"rendered":"Al\u00fcminyumun bas\u0131n\u00e7l\u0131 d\u00f6k\u00fcm tolerans\u0131 nedir?"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Giri\u015f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u015eu konu hakk\u0131nda konu\u015fmak <a href=\"https:\/\/aludiecasting.com\/aluminum-die-casting\/\" target=\"_blank\" rel=\"noopener\">al\u00fcminyum bas\u0131n\u00e7l\u0131 d\u00f6k\u00fcm<\/a> Toleranslar konusu, hassas imalat d\u00fcnyas\u0131nda yapabilece\u011finiz muhtemelen en verimli sohbet konusudur. E\u011fer \u201cher yerde \u00b10,02 mm\u201d notuyla bir \u00e7izimi kal\u0131p d\u00f6k\u00fcm makinesine yerle\u015ftirmi\u015f bir m\u00fchendis iseniz, size de en az bir kez hemen hemen ayn\u0131 \u015fey s\u00f6ylenmi\u015ftir.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/1-3-1024x576.jpg\" alt=\"\" class=\"wp-image-2602\" srcset=\"https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/1-3-1024x576.jpg 1024w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/1-3-300x169.jpg 300w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/1-3-768x432.jpg 768w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/1-3-1536x864.jpg 1536w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/1-3-18x10.jpg 18w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/1-3.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Al\u00fcminyum kal\u0131p d\u00f6k\u00fcm\u00fc, temelde \u00e7elik kal\u0131p i\u00e7inde y\u00fcksek bas\u0131n\u00e7 alt\u0131nda erimi\u015f metalin kat\u0131la\u015fmas\u0131n\u0131n fiziksel kurallar\u0131yla s\u0131n\u0131rl\u0131d\u0131r; ancak y\u00fcksek \u00fcretim h\u0131zlar\u0131, ola\u011fan\u00fcst\u00fc boyutsal tutarl\u0131l\u0131k ve m\u00fckemmel y\u00fczey kalitesi sa\u011flar. D\u00f6k\u00fcm halindeki bir al\u00fcminyum tenekenin ger\u00e7ek kapasitesini bilmek, ikincil i\u015fleme ne zaman gerekli oldu\u011funu anlamak ve NADCA ile ISO 8062-3 gibi end\u00fcstri standartlar\u0131n\u0131n bu s\u0131n\u0131rlar\u0131 nas\u0131l tan\u0131mlad\u0131\u011f\u0131n\u0131 bilmek, maliyet etkin par\u00e7alar ile sorunlu ve pahal\u0131 par\u00e7alar aras\u0131ndaki fark\u0131 belirler.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu makale \u015funlar\u0131 sunmaktad\u0131r:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Al\u00fcminyum kal\u0131p d\u00f6k\u00fcm toleranslar\u0131 i\u00e7in anla\u015f\u0131lmas\u0131 kolay, say\u0131lara dayal\u0131 bir referans k\u0131lavuzu.<\/li>\n\n\n\n<li>Bu, modern y\u00fcksek bas\u0131n\u00e7l\u0131 kal\u0131p d\u00f6k\u00fcm\u00fcn\u00fcn ger\u00e7ek yeteneklerine ili\u015fkin bilgileri i\u00e7ermektedir.<\/li>\n\n\n\n<li>Standart ve hassas kalite s\u0131n\u0131flar\u0131 aras\u0131ndaki fark.<\/li>\n\n\n\n<li>Par\u00e7a geometrisinin ve proses de\u011fi\u015fkenlerinin etkisi.<\/li>\n\n\n\n<li>D\u00f6k\u00fcm \u00e7iziminde neredeyse her zaman i\u015fleme tabi tutulan par\u00e7alar ve toleranslar\u0131n do\u011fru \u015fekilde belirtilmesi.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A\u015fa\u011f\u0131daki bilgiler, tasarlad\u0131\u011f\u0131n\u0131z \u015fanz\u0131man g\u00f6vdesi, elektronik muhafaza veya yap\u0131sal otomotiv par\u00e7as\u0131 i\u00e7in beklentiler belirlemenize yard\u0131mc\u0131 olacakt\u0131r.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">D\u00f6k\u00fcm Halindeki Al\u00fcminyumun Ger\u00e7ek\u00e7i Olarak Ne Kadar Y\u00fck Ta\u015f\u0131yabilece\u011fi<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.diecastingschina.com\/tr\">Bas\u0131n\u00e7l\u0131 d\u00f6k\u00fcm<\/a> erimi\u015f al\u00fcminyumun y\u00fcksek h\u0131z ve bas\u0131n\u00e7 alt\u0131nda sertle\u015ftirilmi\u015f \u00e7elik bir kal\u0131ba zorla bas\u0131lmas\u0131yla ger\u00e7ekle\u015ftirilen bir i\u015flemdir. Metal, kat\u0131la\u015f\u0131rken ve so\u011furken b\u00fcz\u00fcl\u00fcr. Bu b\u00fcz\u00fclme, kal\u0131b\u0131n mekanik s\u0131n\u0131rlamalar\u0131yla birlikte <a href=\"https:\/\/www.plasticmold.net\/die-casting-moulds\/\" target=\"_blank\" rel=\"noopener\">kal\u0131p<\/a>, ayr\u0131m \u00e7izgisinin konumu ve duvar kal\u0131nl\u0131\u011f\u0131n\u0131n homojenli\u011fi, d\u00f6k\u00fcm halinde elde edilebilecek en d\u00fc\u015f\u00fck toleranslar\u0131 belirler.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A\u015fa\u011f\u0131da, yayg\u0131n olarak kullan\u0131lan al\u00fcminyum ala\u015f\u0131mlar\u0131 olan A380 ve ADC12\u2019nin \u00fcretim hatlar\u0131 i\u00e7in tipik \u00e7al\u0131\u015fma toleranslar\u0131 verilmi\u015ftir:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>\u00d6zellik Boyutu<\/strong><\/td><td><strong>Tipik D\u00f6k\u00fcm Halindeki Tolerans<\/strong><\/td><td><strong>En \u0130yi Senaryo (Dikkatli Proses Kontrol\u00fc)<\/strong><\/td><\/tr><\/thead><tbody><tr><td>En fazla 25 mm<\/td><td>\u00b10,10 mm<\/td><td>\u00b10,07 mm<\/td><\/tr><tr><td>25 \u2013 100 mm<\/td><td>\u00b10,15 mm<\/td><td>\u00b10,10 mm<\/td><\/tr><tr><td>100 \u2013 250 mm<\/td><td>\u00b10,25 mm<\/td><td>\u00b10,18 mm<\/td><\/tr><tr><td>250 \u2013 500 mm<\/td><td>\u00b10,35 mm<\/td><td>\u00b10,25 mm<\/td><\/tr><tr><td>Delikler\/ma\u015fa pimleri (\u00e7ap)<\/td><td>\u00b10,10 mm<\/td><td>\u00b10,07 mm<\/td><\/tr><tr><td>100 mm'ye d\u00fc\u015fen d\u00fczl\u00fck<\/td><td>\u00b10,20 mm<\/td><td>Uygun kal\u0131p tasar\u0131m\u0131yla \u00b10,10 mm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Slaytlar ve karotlar, ay\u0131rma \u00e7izgisinin \u00f6tesine uzanan boyutlar\u0131 olu\u015fturmak i\u00e7in kullan\u0131l\u0131r ve bu boyutlara ek pay eklenir. Rakamlardaki en b\u00fcy\u00fck de\u011fi\u015fiklikler \u00fc\u00e7 fakt\u00f6rden kaynaklan\u0131r:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ayr\u0131m \u00e7izgisi ile alan aras\u0131ndaki mesafe<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">'nin her iki b\u00f6l\u00fcm\u00fcnde de yer alan \u00f6zellikler <a href=\"https:\/\/www.plasticmold.net\/die-casting-moulds\/\" target=\"_blank\" rel=\"noopener\">kal\u0131p<\/a> daha geni\u015f bir aral\u0131\u011fa sahip olmal\u0131d\u0131r. M\u00fcmk\u00fcn oldu\u011funca, kritik d\u00fcz y\u00fczeyler veya s\u0131zd\u0131rmazl\u0131k y\u00fczeyleri kal\u0131b\u0131n tek bir taraf\u0131nda bulunmal\u0131d\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Duvar kal\u0131nl\u0131\u011f\u0131n\u0131n homojenli\u011fi<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">2 mm\u2019nin aniden 6 mm\u2019ye d\u00f6n\u00fc\u015ft\u00fc\u011f\u00fc ani bir kal\u0131plama i\u015flemi, so\u011fuma s\u0131ras\u0131nda gerilmeye ve \u015fekil bozulmas\u0131na neden olacakt\u0131r. Duvar kal\u0131nl\u0131\u011f\u0131n\u0131n homojen olmas\u0131, bir tasar\u0131m tercihi de\u011fil; tolerans aral\u0131klar\u0131n\u0131n daha dar u\u00e7lar\u0131nda kal\u0131nl\u0131k de\u011ferlerine ula\u015fmak i\u00e7in bir gerekliliktir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ala\u015f\u0131m se\u00e7imi<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Silikon i\u00e7eren ala\u015f\u0131mlar, daha yumu\u015fak veya daha mukavemetli di\u011fer ala\u015f\u0131mlara k\u0131yasla daha d\u00fczenli bir b\u00fcz\u00fclme g\u00f6sterir. \u0130\u015flenmi\u015f bir 6061 \u00fcr\u00fcn\u00fc i\u00e7in tasarlanan bir tasar\u0131m, kal\u0131p d\u00f6k\u00fcm\u00fcne uyarlan\u0131rken, tolerans b\u00f6l\u00fcm\u00fcn\u00fcn neredeyse her zaman revize edilmesi gerekecektir.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/5-1-1024x576.jpg\" alt=\"\" class=\"wp-image-2603\" srcset=\"https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/5-1-1024x576.jpg 1024w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/5-1-300x169.jpg 300w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/5-1-768x432.jpg 768w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/5-1-18x10.jpg 18w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/5-1-1536x864.jpg 1536w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/5-1.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">NADCA ve ISO Standartlar\u0131: Al\u00fcminyum Bas\u0131n\u00e7l\u0131 D\u00f6k\u00fcm Toleranslar\u0131<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">En yayg\u0131n olarak kullan\u0131lan iki ana standart vard\u0131r: Kuzey Amerika D\u00f6k\u00fcm Derne\u011fi (NADCA) \u00dcr\u00fcn Spesifikasyon Standartlar\u0131 ve ISO 8062-3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">NADCA Standard\u0131 ile Hassas Toleranslar Aras\u0131ndaki Fark<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">NADCA\u2019n\u0131n iki pratik seviyesi bulunmaktad\u0131r.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Standart Tolerans, yetkin bir d\u00f6k\u00fcmc\u00fcn\u00fcn, makul bir kal\u0131p \u00f6mr\u00fc ve normal denetim ko\u015fullar\u0131 alt\u0131nda tam \u00fcretim h\u0131z\u0131nda sa\u011flayabilece\u011fi toleranst\u0131r.<\/li>\n\n\n\n<li>Hassas Tolerans, \u015fekli, oturmas\u0131 veya i\u015flevi k\u00fc\u00e7\u00fck toleranslara duyarl\u0131 olan \u00f6zellikler i\u00e7in kullan\u0131lan, daha dar bir tolerans aral\u0131\u011f\u0131d\u0131r.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Standart se\u00e7enek en d\u00fc\u015f\u00fck maliyetlidir ve \u00e7o\u011fu uygulamaya uygundur. Erken a\u015famalarda kararla\u015ft\u0131r\u0131lan bir hassasiyet \u00f6zelli\u011fi, bazen sadece makul bir ek maliyetle sa\u011flanabilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do\u011frusal boyutlar, ay\u0131rma \u00e7izgisi eklemeleri, k\u0131zak\/ma\u00e7a eklemeleri, a\u00e7\u0131sall\u0131k, e\u011fim, d\u00fczl\u00fck ve ma\u00e7a delik \u00e7aplar\u0131 i\u00e7in hem standart hem de hassas de\u011ferler verilmi\u015ftir. E\u015fmerkezlilik ve ay\u0131rma \u00e7izgisi kaymas\u0131 i\u00e7in ise bir standart de\u011fer belirtilmi\u015ftir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">The casting tolerance grades are defined in ISO 8062-3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Castings are graded according to ISO 8062-3 from DCTG 1 (finest) to DCTG 16 (coarsest). The recommended grade varies for aluminum and magnesium <a href=\"https:\/\/aludiecasting.com\/?s=pressure+die+casting\" target=\"_blank\" rel=\"noopener\">pressure die castings<\/a>, depending on the largest overall dimension of the part:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Largest Overall Dimension<\/strong><\/td><td><strong>Recommended Grade (Aluminum &amp; Magnesium)<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Up to 50 mm<\/td><td>DCTG 6<\/td><\/tr><tr><td>Over 50 mm up to 180 mm<\/td><td>DCTG 7<\/td><\/tr><tr><td>Over 180 mm up to 500 mm<\/td><td>DCTG 8<\/td><\/tr><tr><td>Over 500 mm<\/td><td>DCTG 9<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">These grades are based on a reasonably long production run and a developed process. Complex geometries are typically quoted one grade lower. The wall thicknesses are assumed to be one grade thicker than the general linear tolerance. Total values for the tolerances of these grades are higher with increasing nominal size: a feature of 100\u2013160 mm at DCTG 8 has a total tolerance of 1.8 mm (\u00b10.9 mm).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ISO does not use a plus-only parting-line adder as NADCA does. Explicitly specify an asymmetric tolerance on the dimension if a greater tolerance is required in one direction than the other.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/3-2-1024x576.jpg\" alt=\"\" class=\"wp-image-2606\" srcset=\"https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/3-2-1024x576.jpg 1024w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/3-2-300x169.jpg 300w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/3-2-768x432.jpg 768w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/3-2-1536x864.jpg 1536w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/3-2-18x10.jpg 18w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/3-2.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Features for Post-Casting Machining: Essential<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Some of these characteristics can only be maintained to the necessary precision if the process is controlled carefully, but not if the casting is done as cast:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Precision bores and bearing seats. Generally, anything that a bearing or seal rides on requires \u00b10.02 to \u00b10.05 mm. A tolerance of 0.3 to 0.8 mm of stock should be planned for machining.<\/li>\n\n\n\n<li>Flat sealing faces. A facing pass is almost always applied to gasket and O-ring surfaces.<\/li>\n\n\n\n<li>The following M6 threads are tapped. Small threads can be cut or formed after being cast; larger cast-in threads are possible.<\/li>\n\n\n\n<li>Concentricity (or true-position relationships) smaller than about \u00b1 0.03 mm. These features should be machined in a single set up from the same datum.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">To allow intentional machining stock in just those faces to allow the finishing operation to remove clean metal and not engage residual warp or shrinkage variation in the mold.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Tolerances on a Casting Drawing<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There are four practical rules to be followed in making drawings:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Tightly mark the functional faces. Precision or individual tolerances are applied to bearing seats, sealing faces, mating threads, and alignment features.<\/li>\n\n\n\n<li>Allow surfaces that don&#8217;t perform a function to breathe. As cast tolerances on non-critical dimensions are standard, they also come without additional cost and do not restrict the process.<\/li>\n\n\n\n<li>Prefer GD&amp;T for positional relationships. It is a straightforward callout and much easier for a supplier to quote and check than a pile of bilateral linear tolerances.<\/li>\n\n\n\n<li>Explicitly identify which faces will be machined. The caster can then form the proper stock allowance during the forming process.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">A general tolerance note in or adjacent to the title block should refer to either NADCA Section 4A (Standard or Precision) or ISO 8062-3 and the relevant DCTG grade. Individual tighter tolerances are specified only where needed to override the general note.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/2-1-1024x576.jpg\" alt=\"\" class=\"wp-image-2604\" srcset=\"https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/2-1-1024x576.jpg 1024w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/2-1-300x169.jpg 300w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/2-1-768x432.jpg 768w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/2-1-18x10.jpg 18w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/2-1-1536x864.jpg 1536w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/2-1.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Factors That Limit Achievable Tolerance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">However, many physical and process factors limit the amount that can be stored even in the published tables:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Part size and shape<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">These are the most challenging and are usually large, thin-walled, or abrupt changes in wall thickness.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Wear and alignment of the dies<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A gradual increase in the amount of shifting occurs between the two halves over the life of the tool.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Clamping force<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">When the machine size is not adequate for the area to be produced, the die will open up a little bit under the injection pressure, creating some variation in each of the dimensions that cross the parting line.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Shrinkage properties and solidification of alloys<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Final dimensions are affected by process parameters such as metal temperature, velocity profile, die temperature, and cycle timing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If a tolerance is required that is more precise than the NADCA precision for the feature length or the corresponding ISO for the feature length, the economical answer is nearly always to cast with stock and machine the feature.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Methods of Quality Control for ensuring Tolerance Capability<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Today&#8217;s modern <a href=\"https:\/\/aludiecasting.com\/aluminum-die-casting\/\" target=\"_blank\" rel=\"noopener\">al\u00fcmi\u0307nyum d\u00f6k\u00fcm<\/a> facilities incorporate conventional gauging with modern non-destructive techniques and statistical process control. Coordinate measuring machines are used to check first articles and, on a sample basis, critical dimensions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, if internal porosity or cold shut is found during real-time X-ray or, if warranted by the situation, during on-line CT, it can be a sign of an integrity issue even if the external dimensional tolerances are met. Key process variables and capability keys are tracked using statistical process control to ensure that the process is corrected before parts are out of specification.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ppk is sometimes needed to be greater than 1.67 at PPAP for critical characteristics. Since new dies are designed with intentional tolerances for wear, so that the dimensions are closer to the nominal, NAO (as-cast) is more applicable to assess the feature using Cp rather than Cpk.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Practical Guidelines for Designers and Procurement Teams<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Whenever possible, keep all main datums in one die half and off slides. Dimensions measured from a datum in the opposite half automatically pick up parting-line and shift adders.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use a draft early (usually of 1-3\u00b0 depending on draft depth) to prevent distortion of the part by the ejection force.<\/li>\n\n\n\n<li>Select alloys that have a known shrinkage, if close as-cast tolerances are needed.<\/li>\n\n\n\n<li>Communicate with the caster at the design phase about parting line, draft, datum scheme, and the features that will be machined.<\/li>\n\n\n\n<li><strong>Machining stock<\/strong>: 0.3 to 0.8 mm is left for most aluminum components 100 \u2013 300 mm in size. The volume of stock should not be too high, or it wastes material and cycle time, nor too low, or the cleanup will not be complete.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>The functional requirements and cost, all considered, can be met with aluminum die castings, routinely, using these practices.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/4-3-1024x576.jpg\" alt=\"\" class=\"wp-image-2605\" srcset=\"https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/4-3-1024x576.jpg 1024w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/4-3-300x169.jpg 300w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/4-3-768x432.jpg 768w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/4-3-1536x864.jpg 1536w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/4-3-18x10.jpg 18w, https:\/\/www.diecastingschina.com\/wp-content\/uploads\/2026\/10\/4-3.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">S\u0131k\u00e7a Sorulan Sorular<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">What are the common tolerances for the aluminum die casting?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Under normal production conditions, the as-cast linear tolerances of aluminum are normally \u00b10.10 mm for a value below 25 mm, and \u00b10.25\u20130.35 mm for a value larger than 25 mm. The formal reference is provided by NADCA Standard or Precision tables or ISO 8062-3 tables (DCTG 6\u20139 if overall part size).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Is it possible to die cast aluminum?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes. Aluminum is one of the most commonly die-cast metals in the world. A380, ADC12, and A356 are among the many alloys commonly used on both hot-chamber (less common for aluminum) and cold-chamber high-pressure die casting machines. They create complex geometries, thin walls, excellent surface finish, and high production rates for automotive, electronics, industrial, and consumer applications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Can 6061 aluminum be used for casting?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">6061 is a very good wrought alloy, and not a desirable alloy for die casting. It is not as well suited for high-pressure die casting as the dedicated casting alloys, A380 or ADC12, because of its solidification properties, fluidity, and shrinkage. The mechanical property specifications for the material of the original design are nearly always different when the design is transferred to die casting, and it is also frequently necessary to change the tolerances on the material.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What are the normal tolerances of aluminum?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In regard to die casting, but outside of the specific process, the term \u201cstandard tolerances for aluminum\u201d can apply to a number of processes (extrusion, machining, sheet metal, etc.). In high-pressure die casting, the relevant standards are the NADCA Product Specification Standards (Section 4A) and ISO 8062-3. The typical as-cast tolerance is about \u00b10.10 mm, which increases with feature size, and precision grades have slightly smaller bands on some dimensions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sonu\u00e7<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/aludiecasting.com\/aluminum-die-casting\/\" target=\"_blank\" rel=\"noopener\">Al\u00fcminyum d\u00f6k\u00fcm<\/a> offers excellent productivity and complexity, but its dimensional ability is ultimately limited by solidification physics, die design, and process control. The practical cast tolerances of \u00b10.10 mm for small features and \u00b10.25-0.35 mm for larger features are realistic and economical based on the standard or ISO 8062-3 guidelines of NADCA.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Selected dimensions can be further tightened with precision grades and controlled processes, but it is almost always necessary to intentionally machine stock and perform secondary operations to ensure critical bores, sealing faces, and close positional relationships.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Have experienced die casters involved at the early stage, define the tolerances that count, and aluminum die casting is an extremely effective way to get precision parts that assemble easily and reliably in production.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction Talking about aluminum die-casting tolerances is probably the most productive conversation you can have in the precision manufacturing world. If you are any engineer who has ever put a drawing on a die caster with the notation \u201c\u00b10.02 mm all over,\u201d you have been told by about the same factor at least once. Aluminum [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":2602,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[17,72,37],"class_list":["post-2601","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-die-casting","tag-aluminium-part","tag-aluminum","tag-aluminum-die-casting"],"_links":{"self":[{"href":"https:\/\/www.diecastingschina.com\/tr\/wp-json\/wp\/v2\/posts\/2601","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.diecastingschina.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.diecastingschina.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.diecastingschina.com\/tr\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.diecastingschina.com\/tr\/wp-json\/wp\/v2\/comments?post=2601"}],"version-history":[{"count":1,"href":"https:\/\/www.diecastingschina.com\/tr\/wp-json\/wp\/v2\/posts\/2601\/revisions"}],"predecessor-version":[{"id":2607,"href":"https:\/\/www.diecastingschina.com\/tr\/wp-json\/wp\/v2\/posts\/2601\/revisions\/2607"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.diecastingschina.com\/tr\/wp-json\/wp\/v2\/media\/2602"}],"wp:attachment":[{"href":"https:\/\/www.diecastingschina.com\/tr\/wp-json\/wp\/v2\/media?parent=2601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.diecastingschina.com\/tr\/wp-json\/wp\/v2\/categories?post=2601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.diecastingschina.com\/tr\/wp-json\/wp\/v2\/tags?post=2601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}