Ihe nkedo aja aja isi awọ

Nkedo ajaÍgwè isi awọ emepụtara bụ njikọ dị ọnụ ahịa nke ukwuu n'ihi na ígwè isi awọ adịghị ọnụ ọnụ na nkedo ájá nwere ike iru imewe na-agbanwe agbanwe na ụlọ.Ihe nkedo isi awọ(nke a na-akpọkwa ígwè nkedo isi awọ) bụ otu igwe nkedo gụnyere ọtụtụ ụdị ọkwa dịka nhọpụta dị iche iche nke ụkpụrụ dị iche iche siri dị. Ihe nkedo isi awọ bụ ụdị ígwè-carbon alloy na ọ na-enweta aha ya "isi awọ" n'ihi na akụkụ ha na-egbutu na-ele anya isi awọ. Ọdịdị metallographic nke ígwè nkedo isi awọ bụ nke ihe mejupụtara ya bụ flake graphite, metal matrix na eutectic ókè ọka. N'oge ígwè isi awọ, Carbon dị na graphite flake. Dị ka otu n'ime ihe nkedo a na-ejikarị eme ihe, nkedo isi awọ nwere ọtụtụ uru na ọnụ ahịa, nkedo na machinablity. Mmepụta dịka ụkpụrụ ASTM A48, A536; DIN 1691, 1693; ISO 185, 1083; EN 1561, 1563; DIN 1691, 1693; AS 1830, 1831; JIS, UNI, NF, BS, UNF, NBN, AS, SS, NS. Ọkwa ihe gụnyere:

• ISO185: 100, 150, 200, 250, 300
• ASTM A48: NO.20, NO.25, NO.30, NO.35, NO.40, NO.45
• DIN 1691: GG10, GG15, GG20, GG25, GG30
• EN 1561: EN-GJL-100, EN-GJL-150, EN-GJL-200, EN-GJL-250, EN-GJL-300
• BS 1452: 100, 150, 200, 250, 300
• AS 1830: T150, T220, T260, T300