{"id":1401,"date":"2026-04-02T16:09:05","date_gmt":"2026-04-02T08:09:05","guid":{"rendered":"https:\/\/www.jycomat.com\/?post_type=product&p=1401"},"modified":"2026-04-02T16:10:06","modified_gmt":"2026-04-02T08:10:06","slug":"aisi-4340-steel-36crnimo4-1-6511-en24-817m40-sncm439","status":"publish","type":"product","link":"https:\/\/www.jycomat.com\/pl\/produkt\/aisi-4340-steel-36crnimo4-1-6511-en24-817m40-sncm439\/","title":{"rendered":"Stal AISI 4340 \/ 36CrNiMo4 \/ 1.6511 \/ EN24 \/ 817M40 \/ SNCM439"},"content":{"rendered":"
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Specyfikacja stali AISI 4340 i odpowiednie normy<\/h3>
Kraj<\/td>USA<\/td>Wielka Brytania<\/td>Wielka Brytania<\/td>Japonia<\/td><\/tr>
Standard<\/td>ASTM A29<\/td>EN 10250<\/td>BS 970<\/td>JIS G4103<\/td><\/tr>
Stopnie<\/td>4340<\/td>36CrNiMo4\/
1.6511<\/td>		EN24\/817M40<\/td>SNCM 439\/SNCM8<\/td><\/tr><\/tbody><\/table><\/div>

Sk\u0142ad chemiczny stali i r\u00f3wnowa\u017cnik\u00f3w ASTM 4340<\/h3>
Standard<\/td>Klasa<\/td>C<\/td>Mn<\/td>P<\/td>S<\/td>Si<\/td>Ni<\/td>Cr<\/td>Mo<\/td><\/tr>
ASTM A29<\/td>4340<\/td>0.38-0.43<\/td>0.60-0.80<\/td>0.035<\/td>0.040<\/td>0.15-0.35<\/td>1.65-2.00<\/td>0.70-0.90<\/td>0.20-0.30<\/td><\/tr>
EN 10250<\/td>36CrNiMo4\/
1.6511<\/td>		0.32-0.40<\/td>0.50-0.80<\/td>0.035<\/td>0.035<\/td>\u22660.40<\/td>0.90-1.20<\/td>0.90-1.2<\/td>0.15-0.30<\/td><\/tr>
BS 970<\/td>EN24\/817M40<\/td>0.36-0.44<\/td>0.45-0.70<\/td>0.035<\/td>0.040<\/td>0.1-0.40<\/td>1.3-1.7<\/td>1.00-1.40<\/td>0.20-0.35<\/td><\/tr>
JIS G4103<\/td>SNCM 439\/SNCM8<\/td>0.36-0.43<\/td>0.60-0.90<\/td>0.030<\/td>0.030<\/td>0.15-0.35<\/td>1.60-2.00<\/td>0.60-1.00<\/td>0.15-0.30

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Stal AISI Alloy 4340 W\u0142a\u015bciwo\u015bci mechaniczne<\/h3>
W\u0142a\u015bciwo\u015bci mechaniczne

(stan po obr\u00f3bce cieplnej)<\/p><\/td>

Stan<\/td>Sekcja orzekaj\u0105ca
mm<\/td>		Wytrzyma\u0142o\u015b\u0107 na rozci\u0105ganie MPa<\/td>Wytrzyma\u0142o\u015b\u0107 na rozci\u0105ganie
MPa<\/td>		Elong.
%<\/td>		Izod Impact
J<\/td>		Brinell
Twardo\u015b\u0107<\/td><\/tr>
T<\/td>250<\/td>850-1000<\/td>635<\/td>13<\/td>40<\/td>248-302<\/td><\/tr>
T<\/td>150<\/td>850-1000<\/td>665<\/td>13<\/td>54<\/td>248-302<\/td><\/tr>
U<\/td>100<\/td>930-1080<\/td>740<\/td>12<\/td>47<\/td>269-331<\/td><\/tr>
\u00a0<\/td><\/tr>
V<\/td>63<\/td>1000-1150<\/td>835<\/td>12<\/td>47<\/td>293-352<\/td><\/tr>
W<\/td>30<\/td>1080-1230<\/td>925<\/td>11<\/td>41<\/td>311-375<\/td><\/tr>
X<\/td>30<\/td>1150-1300<\/td>1005<\/td>10<\/td>34<\/td>341-401<\/td><\/tr>
\u00a0<\/td><\/tr>
Y<\/td>30<\/td>1230-1380<\/td>1080<\/td>10<\/td>24<\/td>363-429<\/td><\/tr>
Z<\/td>30<\/td>1555-<\/td>1125<\/td>5<\/td>10<\/td>444-<\/td><\/tr><\/tbody><\/table><\/div>

W\u0142a\u015bciwo\u015bci termiczne<\/h3>
W\u0142a\u015bciwo\u015bci<\/td>Metryczny<\/td>Imperial<\/td><\/tr>
Wsp\u00f3\u0142czynnik rozszerzalno\u015bci cieplnej (20\u00b0C\/68\u00b0F, pr\u00f3bka utwardzona olejem, temperatura 600\u00b0C (1110\u00b0F))<\/td>12,3 \u00b5m\/m\u00b0C<\/td>6,83 \u00b5in\/in\u00b0F<\/td><\/tr>
Przewodno\u015b\u0107 cieplna (typowa stal)<\/td>44,5 W\/mK<\/td>309 BTU in\/h.ft\u00b2.\u00b0F<\/td><\/tr><\/tbody><\/table><\/div>

Kucie stali stopowej 4340<\/h3>

Najpierw podgrzej stal 4340, podgrzej do 1150\u00b0C - maksymalnie 1200\u00b0C do kucia, przytrzymaj, a\u017c temperatura b\u0119dzie jednolita w ca\u0142ym przekroju.<\/p>

Nie ku\u0107 w temperaturze poni\u017cej 850 \u00b0C. 4340 ma dobre w\u0142a\u015bciwo\u015bci kucia, ale nale\u017cy zachowa\u0107 ostro\u017cno\u015b\u0107 podczas ch\u0142odzenia, poniewa\u017c stal wykazuje podatno\u015b\u0107 na p\u0119kanie. Po operacji kucia obrabiany przedmiot powinien by\u0107 ch\u0142odzony tak wolno, jak to mo\u017cliwe. Zaleca si\u0119 ch\u0142odzenie w piasku lub suchym wapnie itp.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Stal AISI 4340 to \u015bredniow\u0119glowa, niskostopowa stal znana ze swojej ci\u0105gliwo\u015bci i wytrzyma\u0142o\u015bci w stosunkowo du\u017cych przekrojach. AISI 4340 to tak\u017ce jeden z rodzaj\u00f3w stali niklowo-chromowo-molibdenowej. Stal stopowa 4340 jest zazwyczaj dostarczana hartowana i odpuszczana w zakresie rozci\u0105gania 930 - 1080 Mpa.<\/p>","protected":false},"featured_media":1402,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[22],"product_tag":[64],"class_list":["post-1401","product","type-product","status-publish","has-post-thumbnail","product_cat-mold-steel","product_tag-mold-steel","desktop-align-left","tablet-align-left","mobile-align-left","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.jycomat.com\/pl\/wp-json\/wp\/v2\/product\/1401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jycomat.com\/pl\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.jycomat.com\/pl\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jycomat.com\/pl\/wp-json\/wp\/v2\/comments?post=1401"}],"version-history":[{"count":0,"href":"https:\/\/www.jycomat.com\/pl\/wp-json\/wp\/v2\/product\/1401\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jycomat.com\/pl\/wp-json\/wp\/v2\/media\/1402"}],"wp:attachment":[{"href":"https:\/\/www.jycomat.com\/pl\/wp-json\/wp\/v2\/media?parent=1401"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.jycomat.com\/pl\/wp-json\/wp\/v2\/product_brand?post=1401"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.jycomat.com\/pl\/wp-json\/wp\/v2\/product_cat?post=1401"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.jycomat.com\/pl\/wp-json\/wp\/v2\/product_tag?post=1401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}