{"id":4004,"date":"2024-06-29T15:08:45","date_gmt":"2024-06-29T15:08:45","guid":{"rendered":"https:\/\/machining-quote.com\/?p=4004"},"modified":"2024-07-09T09:33:06","modified_gmt":"2024-07-09T09:33:06","slug":"304-vs-420-stainless-steel","status":"publish","type":"post","link":"https:\/\/machining-quote.com\/el\/bolg\/304-vs-420-stainless-steel\/","title":{"rendered":"\u03a0\u03bf\u03b9\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03ac \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c5 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 304 \u03ba\u03b1\u03b9 420"},"content":{"rendered":"<h4>\u03a0\u03af\u03bd\u03b1\u03ba\u03b1\u03c2 \u03c0\u03b5\u03c1\u03b9\u03b5\u03c7\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd<\/h4>\n<ul>\n<li><a href=\"#equivalents\">\u03a0\u03bf\u03b9\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03b1 \u03b9\u03c3\u03bf\u03b4\u03cd\u03bd\u03b1\u03bc\u03b1 \u03c4\u03bf\u03c5 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c5 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 304 \u03ba\u03b1\u03b9 420;<\/a><\/li>\n<li><a href=\"#comparison\">SS420 \u03ba\u03b1\u03b9 SS304: \u03a0\u03bf\u03b9\u03bf \u03b5\u03af\u03bd\u03b1\u03b9 \u03ba\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf;<\/a><\/li>\n<li><a href=\"#pros-cons\">\u03a0\u03bb\u03b5\u03bf\u03bd\u03b5\u03ba\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03bc\u03b5\u03b9\u03bf\u03bd\u03b5\u03ba\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03c4\u03b7\u03c2 \u03c7\u03c1\u03ae\u03c3\u03b7\u03c2 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c5 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 304 \u03ad\u03bd\u03b1\u03bd\u03c4\u03b9 420<\/a><\/li>\n<li><a href=\"#corrosion-resistance\">\u0391\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 \u03c3\u03c4\u03b7 \u03b4\u03b9\u03ac\u03b2\u03c1\u03c9\u03c3\u03b7 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 420 vs 304<\/a><\/li>\n<li><a href=\"#knife\">304 vs 420 \u03bc\u03b1\u03c7\u03b1\u03af\u03c1\u03b9 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1<\/a><\/li>\n<li><a href=\"#chemical-composition\">AISI 420 vs 304 \u03a7\u03b7\u03bc\u03b9\u03ba\u03ae \u03a3\u03cd\u03bd\u03b8\u03b5\u03c3\u03b7<\/a><\/li>\n<li><a href=\"#heat-resistance\">\u0391\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 \u03c3\u03c4\u03b7 \u03b8\u03b5\u03c1\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1: \u0391\u03bd\u03b1\u03bb\u03cd\u03bf\u03bd\u03c4\u03b1\u03c2 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 420 vs 304<\/a><\/li>\n<li><a href=\"#machinability\">\u0394\u03c5\u03bd\u03b1\u03c4\u03cc\u03c4\u03b7\u03c4\u03b1 \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ae\u03c2 \u03ba\u03b1\u03c4\u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b1\u03c2 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c5 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 420 \u03c3\u03b5 \u03c3\u03cd\u03b3\u03ba\u03c1\u03b9\u03c3\u03b7 \u03bc\u03b5 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 304<\/a><\/li>\n<li><a href=\"#heat-treatment\">\u0394\u03b9\u03b1\u03b4\u03b9\u03ba\u03b1\u03c3\u03af\u03b5\u03c2 \u03b8\u03b5\u03c1\u03bc\u03b9\u03ba\u03ae\u03c2 \u03b5\u03c0\u03b5\u03be\u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b1\u03c2 \u03b3\u03b9\u03b1 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 420 \u03ba\u03b1\u03b9 304<\/a><\/li>\n<li><a href=\"#summary\">\u03a3\u03c5\u03bd\u03bf\u03c0\u03c4\u03b9\u03ba\u03cc \u03b3\u03c1\u03ac\u03c6\u03b7\u03bc\u03b1 \u03c4\u03b7\u03c2 \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03ac\u03c2 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd 304 \u03ba\u03b1\u03b9 420 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1<\/a><\/li>\n<li><a href=\"#conclusion\">\u03a3\u03c5\u03bc\u03c0\u03ad\u03c1\u03b1\u03c3\u03bc\u03b1<\/a><\/li>\n<\/ul>\n<p>\u00ab\u0391\u03c0\u03cc \u03c4\u03b9\u03c2 \u03ba\u03bf\u03c5\u03b6\u03af\u03bd\u03b5\u03c2 \u03c3\u03c4\u03b1 \u03bc\u03b1\u03c7\u03b1\u03b9\u03c1\u03bf\u03c0\u03af\u03c1\u03bf\u03c5\u03bd\u03b1: \u0395\u03be\u03b5\u03c1\u03b5\u03c5\u03bd\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b7\u03bd \u03b5\u03c5\u03b5\u03bb\u03b9\u03be\u03af\u03b1 \u03c4\u03bf\u03c5 304 \u03ba\u03b1\u03b9 \u03c4\u03b7 \u03c3\u03ba\u03bb\u03b7\u03c1\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c4\u03bf\u03c5 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c5 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 420\u00bb<\/p>\n<p>\u039f\u03b9 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03b9 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b5\u03c2 304 \u03ba\u03b1\u03b9 420 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03b5\u03c5\u03c1\u03ad\u03c9\u03c2 \u03bb\u03cc\u03b3\u03c9 \u03c4\u03b7\u03c2 \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae\u03c2 \u03c3\u03c4\u03b7 \u03b4\u03b9\u03ac\u03b2\u03c1\u03c9\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae\u03c2 \u03c4\u03bf\u03c5\u03c2. \u0397 \u03ba\u03cd\u03c1\u03b9\u03b1 \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03ac \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2 \u03ad\u03b3\u03ba\u03b5\u03b9\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7 \u03c7\u03b7\u03bc\u03b9\u03ba\u03ae \u03c4\u03bf\u03c5\u03c2 \u03c3\u03cd\u03bd\u03b8\u03b5\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b9\u03c2 \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ad\u03c2 \u03c4\u03bf\u03c5\u03c2 \u03b9\u03b4\u03b9\u03cc\u03c4\u03b7\u03c4\u03b5\u03c2, \u03c0\u03bf\u03c5 \u03c5\u03c0\u03b1\u03b3\u03bf\u03c1\u03b5\u03cd\u03bf\u03c5\u03bd \u03c4\u03b9\u03c2 \u03b5\u03b9\u03b4\u03b9\u03ba\u03ad\u03c2 \u03c7\u03c1\u03ae\u03c3\u03b5\u03b9\u03c2 \u03c4\u03bf\u03c5\u03c2 \u03c3\u03c4\u03b7 \u03b2\u03b9\u03bf\u03bc\u03b7\u03c7\u03b1\u03bd\u03af\u03b1. \u039f \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c2 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1\u03c2 304, \u03bc\u03ad\u03c1\u03bf\u03c2 \u03c4\u03b7\u03c2 \u03bf\u03b9\u03ba\u03bf\u03b3\u03ad\u03bd\u03b5\u03b9\u03b1\u03c2 \u03c4\u03c9\u03bd \u03c9\u03c3\u03c4\u03b5\u03bd\u03b9\u03c4\u03b9\u03ba\u03ce\u03bd, \u03b5\u03af\u03bd\u03b1\u03b9 \u03b9\u03b4\u03b9\u03b1\u03af\u03c4\u03b5\u03c1\u03b1 \u03b1\u03bd\u03b8\u03b5\u03ba\u03c4\u03b9\u03ba\u03cc\u03c2 \u03c3\u03c4\u03b7 \u03b4\u03b9\u03ac\u03b2\u03c1\u03c9\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03b5\u03c5\u03ad\u03bb\u03b9\u03ba\u03c4\u03bf, \u03ba\u03c5\u03c1\u03af\u03c9\u03c2 \u03bb\u03cc\u03b3\u03c9 \u03c4\u03b7\u03c2 \u03c5\u03c8\u03b7\u03bb\u03ae\u03c2 \u03c0\u03b5\u03c1\u03b9\u03b5\u03ba\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03ac\u03c2 \u03c4\u03bf\u03c5 \u03c3\u03b5 \u03c7\u03c1\u03ce\u03bc\u03b9\u03bf \u03ba\u03b1\u03b9 \u03bd\u03b9\u03ba\u03ad\u03bb\u03b9\u03bf. \u039f \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c2 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1\u03c2 420, \u03ad\u03bd\u03b1 \u03bc\u03b1\u03c1\u03c4\u03b5\u03bd\u03c3\u03b9\u03c4\u03b9\u03ba\u03cc \u03ba\u03c1\u03ac\u03bc\u03b1, \u03c0\u03b5\u03c1\u03b9\u03ad\u03c7\u03b5\u03b9 \u03c5\u03c8\u03b7\u03bb\u03cc\u03c4\u03b5\u03c1\u03b1 \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03b1 \u03ac\u03bd\u03b8\u03c1\u03b1\u03ba\u03b1, \u03c0\u03c1\u03bf\u03c3\u03c6\u03ad\u03c1\u03bf\u03bd\u03c4\u03b1\u03c2 \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b7 \u03c3\u03ba\u03bb\u03b7\u03c1\u03cc\u03c4\u03b7\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae \u03b1\u03bb\u03bb\u03ac \u03bc\u03b9\u03ba\u03c1\u03cc\u03c4\u03b5\u03c1\u03b7 \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae \u03c3\u03c4\u03b7 \u03b4\u03b9\u03ac\u03b2\u03c1\u03c9\u03c3\u03b7 \u03c3\u03b5 \u03c3\u03cd\u03b3\u03ba\u03c1\u03b9\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03bf 304.<\/p>\n<h2 id=\"equivalents\">\u03a0\u03bf\u03b9\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03b1 \u03b9\u03c3\u03bf\u03b4\u03cd\u03bd\u03b1\u03bc\u03b1 \u03c4\u03bf\u03c5 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c5 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 304 \u03ba\u03b1\u03b9 420;<\/h2>\n<table>\n<tbody>\n<tr>\n<th>\u03a0\u03c1\u03cc\u03c4\u03c5\u03c0\u03bf<\/th>\n<th>304 \u0391\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03b1\u03c4\u03c3\u03ac\u03bb\u03b9<\/th>\n<th>420 \u0391\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03b1\u03c4\u03c3\u03ac\u03bb\u03b9<\/th>\n<\/tr>\n<tr>\n<td>EN<\/td>\n<td>1.4301<\/td>\n<td>1.4021<\/td>\n<\/tr>\n<tr>\n<td>ISO<\/td>\n<td>4301<\/td>\n<td>4021<\/td>\n<\/tr>\n<tr>\n<td>\u03ba\u03b9\u03bd\u03ad\u03b6\u03b9\u03ba\u03b1<\/td>\n<td>06Cr19Ni10<\/td>\n<td>2Cr13<\/td>\n<\/tr>\n<tr>\n<td>\u0399\u03b1\u03c0\u03c9\u03bd\u03b9\u03ba\u03ac<\/td>\n<td>SUS304<\/td>\n<td>SUS420J1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"comparison\">SS420 \u03ba\u03b1\u03b9 SS304: \u03a0\u03bf\u03b9\u03bf \u03b5\u03af\u03bd\u03b1\u03b9 \u03ba\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf;<\/h2>\n<ul>\n<li><strong>304 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1:<\/strong> \u03a4\u03bf \u03ba\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf \u03b3\u03b9\u03b1 \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae \u03c3\u03c4\u03b7 \u03b4\u03b9\u03ac\u03b2\u03c1\u03c9\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03bc\u03bf\u03c1\u03c6\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7.<\/li>\n<li><strong>420 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1:<\/strong> \u03a4\u03bf \u03ba\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf \u03b3\u03b9\u03b1 \u03c4\u03b7 \u03c3\u03ba\u03bb\u03b7\u03c1\u03cc\u03c4\u03b7\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b7 \u03c3\u03c5\u03b3\u03ba\u03c1\u03ac\u03c4\u03b7\u03c3\u03b7 \u03c4\u03c9\u03bd \u03ac\u03ba\u03c1\u03c9\u03bd.<\/li>\n<\/ul>\n<h2 id=\"pros-cons\">\u03a0\u03bb\u03b5\u03bf\u03bd\u03b5\u03ba\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03bc\u03b5\u03b9\u03bf\u03bd\u03b5\u03ba\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03c4\u03b7\u03c2 \u03c7\u03c1\u03ae\u03c3\u03b7\u03c2 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c5 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 304 \u03ad\u03bd\u03b1\u03bd\u03c4\u03b9 420<\/h2>\n<table>\n<tbody>\n<tr>\n<th>\u038c\u03c8\u03b7<\/th>\n<th>304 \u0391\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03b1\u03c4\u03c3\u03ac\u03bb\u03b9<\/th>\n<th>420 \u0391\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03b1\u03c4\u03c3\u03ac\u03bb\u03b9<\/th>\n<\/tr>\n<tr>\n<td>\u0391\u03bd\u03c4\u03bf\u03c7\u03ae \u03c3\u03c4\u03b7 \u03b4\u03b9\u03ac\u03b2\u03c1\u03c9\u03c3\u03b7<\/td>\n<td>\u03a5\u03c8\u03b7\u03bb\u03ae<\/td>\n<td>\u039c\u03ad\u03c4\u03c1\u03b9\u03b1<\/td>\n<\/tr>\n<tr>\n<td>\u03a3\u03ba\u03bb\u03b7\u03c1\u03cc\u03c4\u03b7\u03c4\u03b1<\/td>\n<td>\u039c\u03ad\u03c4\u03c1\u03b9\u03b1<\/td>\n<td>\u03a5\u03c8\u03b7\u03bb\u03ae<\/td>\n<\/tr>\n<tr>\n<td>\u0394\u03b9\u03b1\u03bc\u03bf\u03c1\u03c6\u03c9\u03c3\u03b9\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1<\/td>\n<td>\u0395\u03be\u03b1\u03b9\u03c1\u03b5\u03c4\u03b9\u03ba\u03cc<\/td>\n<td>\u03a6\u03c4\u03c9\u03c7\u03cc<\/td>\n<\/tr>\n<tr>\n<td>\u03a3\u03c5\u03b3\u03ba\u03bf\u03bb\u03bb\u03b7\u03c3\u03b9\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1<\/td>\n<td>\u0395\u03be\u03b1\u03b9\u03c1\u03b5\u03c4\u03b9\u03ba\u03cc<\/td>\n<td>\u039c\u03ad\u03c4\u03c1\u03b9\u03b1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"corrosion-resistance\">\u0391\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 \u03c3\u03c4\u03b7 \u03b4\u03b9\u03ac\u03b2\u03c1\u03c9\u03c3\u03b7 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 420 vs 304<\/h2>\n<ul>\n<li><strong>304 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1:<\/strong> \u03a0\u03bf\u03bb\u03cd \u03b1\u03bd\u03b8\u03b5\u03ba\u03c4\u03b9\u03ba\u03cc \u03c3\u03c4\u03b7 \u03c3\u03ba\u03bf\u03c5\u03c1\u03b9\u03ac \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c3\u03b7. \u039a\u03b1\u03c4\u03ac\u03bb\u03bb\u03b7\u03bb\u03bf \u03b3\u03b9\u03b1 \u03c5\u03b3\u03c1\u03cc \u03ba\u03b1\u03b9 \u03b1\u03bb\u03bc\u03c5\u03c1\u03cc \u03c0\u03b5\u03c1\u03b9\u03b2\u03ac\u03bb\u03bb\u03bf\u03bd.<\/li>\n<li><strong>420 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1:<\/strong> \u039b\u03b9\u03b3\u03cc\u03c4\u03b5\u03c1\u03bf \u03b1\u03bd\u03b8\u03b5\u03ba\u03c4\u03b9\u03ba\u03cc \u03c3\u03c4\u03b7 \u03c3\u03ba\u03bf\u03c5\u03c1\u03b9\u03ac. \u039a\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b1 \u03c3\u03b5 \u03be\u03b7\u03c1\u03ac \u03c0\u03b5\u03c1\u03b9\u03b2\u03ac\u03bb\u03bb\u03bf\u03bd\u03c4\u03b1.<\/li>\n<\/ul>\n<h2 id=\"knife\">304 vs 420 \u03bc\u03b1\u03c7\u03b1\u03af\u03c1\u03b9 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1<\/h2>\n<ul>\n<li><strong>304 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1:<\/strong> \u039a\u03b1\u03bb\u03cc \u03b3\u03b9\u03b1 \u03bc\u03b1\u03c7\u03b1\u03af\u03c1\u03b9\u03b1 \u03ba\u03bf\u03c5\u03b6\u03af\u03bd\u03b1\u03c2 \u03c0\u03bf\u03c5 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b1\u03bd\u03c4\u03b9\u03c3\u03c4\u03ad\u03ba\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7 \u03c3\u03ba\u03bf\u03c5\u03c1\u03b9\u03ac.<\/li>\n<li><strong>420 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1:<\/strong> \u039a\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b1 \u03b3\u03b9\u03b1 \u03bb\u03b5\u03c0\u03af\u03b4\u03b5\u03c2 \u03c0\u03bf\u03c5 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03c0\u03b1\u03c1\u03b1\u03bc\u03ad\u03bd\u03bf\u03c5\u03bd \u03ba\u03bf\u03c6\u03c4\u03b5\u03c1\u03ad\u03c2, \u03cc\u03c0\u03c9\u03c2 \u03c7\u03b5\u03b9\u03c1\u03bf\u03c5\u03c1\u03b3\u03b9\u03ba\u03ac \u03b5\u03c1\u03b3\u03b1\u03bb\u03b5\u03af\u03b1 \u03ba\u03b1\u03b9 \u03bc\u03b1\u03c7\u03b1\u03b9\u03c1\u03bf\u03c0\u03af\u03c1\u03bf\u03c5\u03bd\u03b1.<\/li>\n<\/ul>\n<h2 id=\"chemical-composition\">AISI 420 vs 304 \u03a7\u03b7\u03bc\u03b9\u03ba\u03ae \u03a3\u03cd\u03bd\u03b8\u03b5\u03c3\u03b7<\/h2>\n<table>\n<tbody>\n<tr>\n<th>\u03a3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03bf<\/th>\n<th>304 \u0391\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03b1\u03c4\u03c3\u03ac\u03bb\u03b9<\/th>\n<th>420 \u0391\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03b1\u03c4\u03c3\u03ac\u03bb\u03b9<\/th>\n<\/tr>\n<tr>\n<td>\u03a7\u03c1\u03ce\u03bc\u03b9\u03bf<\/td>\n<td>18-20%<\/td>\n<td>12-14%<\/td>\n<\/tr>\n<tr>\n<td>\u039d\u03b9\u03ba\u03ad\u03bb\u03b9\u03bf<\/td>\n<td>8-10.5%<\/td>\n<td>\u039a\u03b1\u03bd\u03ad\u03bd\u03b1<\/td>\n<\/tr>\n<tr>\n<td>\u0386\u03bd\u03b8\u03c1\u03b1\u03ba\u03b1\u03c2<\/td>\n<td>\u039c\u03ad\u03b3\u03b9\u03c3\u03c4\u03bf 0,08%<\/td>\n<td>0.15-0.40%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"heat-resistance\">\u0391\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 \u03c3\u03c4\u03b7 \u03b8\u03b5\u03c1\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1: \u0391\u03bd\u03b1\u03bb\u03cd\u03bf\u03bd\u03c4\u03b1\u03c2 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 420 vs 304<\/h2>\n<ul>\n<li><strong>304 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1:<\/strong> \u0391\u03bd\u03c4\u03ad\u03c7\u03b5\u03b9 \u03ad\u03c9\u03c2 \u03ba\u03b1\u03b9 870\u00b0C \u03c3\u03b5 \u03c3\u03c5\u03bd\u03b5\u03c7\u03ae \u03c7\u03c1\u03ae\u03c3\u03b7. \u039a\u03b1\u03bb\u03cc \u03b3\u03b9\u03b1 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ad\u03c2 \u03c3\u03b5 \u03c5\u03c8\u03b7\u03bb\u03ad\u03c2 \u03b8\u03b5\u03c1\u03bc\u03bf\u03ba\u03c1\u03b1\u03c3\u03af\u03b5\u03c2.<\/li>\n<li><strong>420 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1:<\/strong> \u0391\u03bd\u03c4\u03ad\u03c7\u03b5\u03b9 \u03ad\u03c9\u03c2 \u03ba\u03b1\u03b9 650\u00b0C. \u039a\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf \u03b3\u03b9\u03b1 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ad\u03c2 \u03c0\u03bf\u03c5 \u03c7\u03c1\u03b5\u03b9\u03ac\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c5\u03c8\u03b7\u03bb\u03ae \u03c3\u03ba\u03bb\u03b7\u03c1\u03cc\u03c4\u03b7\u03c4\u03b1.<\/li>\n<\/ul>\n<h2 id=\"machinability\">\u0394\u03c5\u03bd\u03b1\u03c4\u03cc\u03c4\u03b7\u03c4\u03b1 \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ae\u03c2 \u03ba\u03b1\u03c4\u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b1\u03c2 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c5 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 420 \u03c3\u03b5 \u03c3\u03cd\u03b3\u03ba\u03c1\u03b9\u03c3\u03b7 \u03bc\u03b5 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 304<\/h2>\n<ul>\n<li><strong>304 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1:<\/strong> \u03a0\u03b9\u03bf \u03b5\u03cd\u03ba\u03bf\u03bb\u03bf \u03c3\u03c4\u03b7 \u03bc\u03b7\u03c7\u03b1\u03bd\u03ae. \u03a4\u03b5\u03af\u03bd\u03b5\u03b9 \u03bd\u03b1 \u03b4\u03bf\u03c5\u03bb\u03b5\u03cd\u03b5\u03b9 \u03c3\u03ba\u03bb\u03b7\u03c1\u03ac.<\/li>\n<li><strong>420 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1:<\/strong> \u03a0\u03b9\u03bf \u03b4\u03cd\u03c3\u03ba\u03bf\u03bb\u03bf \u03c3\u03c4\u03b7 \u03bc\u03b7\u03c7\u03b1\u03bd\u03ae \u03bb\u03cc\u03b3\u03c9 \u03c4\u03b7\u03c2 \u03c5\u03c8\u03b7\u03bb\u03ae\u03c2 \u03c3\u03ba\u03bb\u03b7\u03c1\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2. \u0391\u03c0\u03b1\u03b9\u03c4\u03b5\u03af \u03c7\u03b1\u03bc\u03b7\u03bb\u03cc\u03c4\u03b5\u03c1\u03b5\u03c2 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b5\u03c2 \u03ba\u03b1\u03b9 \u03c0\u03b9\u03bf \u03c3\u03c4\u03b9\u03b2\u03b1\u03c1\u03ac \u03b5\u03c1\u03b3\u03b1\u03bb\u03b5\u03af\u03b1.<\/li>\n<\/ul>\n<h2 id=\"heat-treatment\">\u0394\u03b9\u03b1\u03b4\u03b9\u03ba\u03b1\u03c3\u03af\u03b5\u03c2 \u03b8\u03b5\u03c1\u03bc\u03b9\u03ba\u03ae\u03c2 \u03b5\u03c0\u03b5\u03be\u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b1\u03c2 \u03b3\u03b9\u03b1 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 420 \u03ba\u03b1\u03b9 304<\/h2>\n<ul>\n<li><strong>304 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1:<\/strong> \u0394\u03b5\u03bd \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03c3\u03ba\u03bb\u03b7\u03c1\u03c5\u03bd\u03b8\u03b5\u03af \u03bc\u03b5 \u03b8\u03b5\u03c1\u03bc\u03b9\u03ba\u03ae \u03b5\u03c0\u03b5\u03be\u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b1. \u03a3\u03ba\u03bb\u03b7\u03c1\u03cd\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c8\u03c5\u03c7\u03c1\u03ae \u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b1.<\/li>\n<li><strong>420 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1:<\/strong> \u039c\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03c3\u03ba\u03bb\u03b7\u03c1\u03c5\u03bd\u03b8\u03b5\u03af \u03bc\u03b5 \u03b8\u03ad\u03c1\u03bc\u03b1\u03bd\u03c3\u03b7 \u03c3\u03c4\u03bf\u03c5\u03c2 950-1050\u00b0C \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b7 \u03c3\u03c5\u03bd\u03ad\u03c7\u03b5\u03b9\u03b1 \u03c3\u03b2\u03ae\u03c3\u03b9\u03bc\u03bf.<\/li>\n<\/ul>\n<h2 id=\"summary\">\u03a3\u03c5\u03bd\u03bf\u03c0\u03c4\u03b9\u03ba\u03cc \u03b3\u03c1\u03ac\u03c6\u03b7\u03bc\u03b1 \u03c4\u03b7\u03c2 \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03ac\u03c2 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd 304 \u03ba\u03b1\u03b9 420 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1<\/h2>\n<table>\n<tbody>\n<tr>\n<th>\u038c\u03c8\u03b7<\/th>\n<th>304 \u0391\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03b1\u03c4\u03c3\u03ac\u03bb\u03b9<\/th>\n<th>420 \u0391\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03b1\u03c4\u03c3\u03ac\u03bb\u03b9<\/th>\n<\/tr>\n<tr>\n<td>\u0391\u03bd\u03c4\u03bf\u03c7\u03ae \u03c3\u03c4\u03b7 \u03b4\u03b9\u03ac\u03b2\u03c1\u03c9\u03c3\u03b7<\/td>\n<td>\u03a5\u03c8\u03b7\u03bb\u03ae<\/td>\n<td>\u039c\u03ad\u03c4\u03c1\u03b9\u03b1<\/td>\n<\/tr>\n<tr>\n<td>\u03a3\u03ba\u03bb\u03b7\u03c1\u03cc\u03c4\u03b7\u03c4\u03b1<\/td>\n<td>\u039c\u03ad\u03c4\u03c1\u03b9\u03b1<\/td>\n<td>\u03a5\u03c8\u03b7\u03bb\u03ae<\/td>\n<\/tr>\n<tr>\n<td>\u0394\u03b9\u03b1\u03bc\u03bf\u03c1\u03c6\u03c9\u03c3\u03b9\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1<\/td>\n<td>\u0395\u03be\u03b1\u03b9\u03c1\u03b5\u03c4\u03b9\u03ba\u03cc<\/td>\n<td>\u03a6\u03c4\u03c9\u03c7\u03cc<\/td>\n<\/tr>\n<tr>\n<td>\u03a3\u03c5\u03b3\u03ba\u03bf\u03bb\u03bb\u03b7\u03c3\u03b9\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1<\/td>\n<td>\u0395\u03be\u03b1\u03b9\u03c1\u03b5\u03c4\u03b9\u03ba\u03cc<\/td>\n<td>\u039c\u03ad\u03c4\u03c1\u03b9\u03b1<\/td>\n<\/tr>\n<tr>\n<td>\u0391\u03bd\u03c4\u03bf\u03c7\u03ae \u03c3\u03c4\u03b7 \u03b8\u03b5\u03c1\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1<\/td>\n<td>\u0388\u03c9\u03c2 870\u00b0C<\/td>\n<td>\u0388\u03c9\u03c2 650\u00b0C<\/td>\n<\/tr>\n<tr>\n<td>\u0395\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ad\u03c2<\/td>\n<td>\u039c\u03b1\u03b3\u03b5\u03b9\u03c1\u03b9\u03ba\u03ac \u03c3\u03ba\u03b5\u03cd\u03b7, \u0399\u03b1\u03c4\u03c1\u03b9\u03ba\u03ad\u03c2 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ad\u03c2<\/td>\n<td>\u039c\u03b1\u03c7\u03b1\u03b9\u03c1\u03bf\u03c0\u03ae\u03c1\u03bf\u03c5\u03bd\u03b1, \u03a7\u03b5\u03b9\u03c1\u03bf\u03c5\u03c1\u03b3\u03b9\u03ba\u03ac \u03b5\u03c1\u03b3\u03b1\u03bb\u03b5\u03af\u03b1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"conclusion\">\u03a3\u03c5\u03bc\u03c0\u03ad\u03c1\u03b1\u03c3\u03bc\u03b1<\/h2>\n<p>\u0397 \u03ba\u03cd\u03c1\u03b9\u03b1 \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03ac \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c5 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 304 \u03ba\u03b1\u03b9 420 \u03ad\u03b3\u03ba\u03b5\u03b9\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7 \u03c7\u03b7\u03bc\u03b9\u03ba\u03ae \u03c4\u03bf\u03c5\u03c2 \u03c3\u03cd\u03bd\u03b8\u03b5\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b9\u03c2 \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ad\u03c2 \u03c4\u03bf\u03c5\u03c2 \u03b9\u03b4\u03b9\u03cc\u03c4\u03b7\u03c4\u03b5\u03c2. \u039f \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c2 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1\u03c2 304 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03be\u03b1\u03b9\u03c1\u03b5\u03c4\u03b9\u03ba\u03ac \u03b1\u03bd\u03b8\u03b5\u03ba\u03c4\u03b9\u03ba\u03cc\u03c2 \u03c3\u03c4\u03b7 \u03b4\u03b9\u03ac\u03b2\u03c1\u03c9\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c3\u03b7, \u03ba\u03b1\u03b8\u03b9\u03c3\u03c4\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03bf\u03bd \u03ba\u03b1\u03c4\u03ac\u03bb\u03bb\u03b7\u03bb\u03bf \u03b3\u03b9\u03b1 \u03b4\u03b9\u03ac\u03c6\u03bf\u03c1\u03b5\u03c2 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ad\u03c2 \u03ba\u03b1\u03b9 \u03c0\u03b5\u03c1\u03b9\u03b2\u03ac\u03bb\u03bb\u03bf\u03bd\u03c4\u03b1. \u0391\u03c0\u03cc \u03c4\u03b7\u03bd \u03ac\u03bb\u03bb\u03b7 \u03c0\u03bb\u03b5\u03c5\u03c1\u03ac, \u03bf \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c2 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1\u03c2 420 \u03ad\u03c7\u03b5\u03b9 \u03c5\u03c8\u03b7\u03bb\u03cc\u03c4\u03b5\u03c1\u03b7 \u03c0\u03b5\u03c1\u03b9\u03b5\u03ba\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c3\u03b5 \u03ac\u03bd\u03b8\u03c1\u03b1\u03ba\u03b1, \u03c0\u03b1\u03c1\u03ad\u03c7\u03bf\u03bd\u03c4\u03b1\u03c2 \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b7 \u03c3\u03ba\u03bb\u03b7\u03c1\u03cc\u03c4\u03b7\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae, \u03b1\u03bb\u03bb\u03ac \u03bb\u03b9\u03b3\u03cc\u03c4\u03b5\u03c1\u03b7 \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae \u03c3\u03c4\u03b7 \u03b4\u03b9\u03ac\u03b2\u03c1\u03c9\u03c3\u03b7, \u03ba\u03b1\u03b8\u03b9\u03c3\u03c4\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03bf\u03bd \u03b9\u03b4\u03b1\u03bd\u03b9\u03ba\u03cc \u03b3\u03b9\u03b1 \u03bc\u03b1\u03c7\u03b1\u03b9\u03c1\u03bf\u03c0\u03ae\u03c1\u03bf\u03c5\u03bd\u03b1 \u03ba\u03b1\u03b9 \u03ac\u03bb\u03bb\u03b5\u03c2 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ad\u03c2 \u03bb\u03b5\u03c0\u03af\u03b4\u03c9\u03bd.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u03a0\u03af\u03bd\u03b1\u03ba\u03b1\u03c2 \u03c0\u03b5\u03c1\u03b9\u03b5\u03c7\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd \u03a0\u03bf\u03b9\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03b1 \u03b9\u03c3\u03bf\u03b4\u03cd\u03bd\u03b1\u03bc\u03b1 \u03c4\u03bf\u03c5 \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf\u03c5 \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 304 \u03ba\u03b1\u03b9 420; SS420 \u03ba\u03b1\u03b9 SS304: \u03a0\u03bf\u03b9\u03bf \u03b5\u03af\u03bd\u03b1\u03b9 \u03ba\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf; \u03a0\u03bb\u03b5\u03bf\u03bd\u03b5\u03ba\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03bc\u03b5\u03b9\u03bf\u03bd\u03b5\u03ba\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03c4\u03b7\u03c2 \u03c7\u03c1\u03ae\u03c3\u03b7\u03c2 304 vs 420 \u0391\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03b1\u03c4\u03c3\u03ac\u03bb\u03b9 420 vs 304 \u0391\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03b1\u03c4\u03c3\u03ac\u03bb\u03b9 \u0391\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 \u03c3\u03c4\u03b7 \u03b4\u03b9\u03ac\u03b2\u03c1\u03c9\u03c3\u03b7 304 vs 420 \u039c\u03b1\u03c7\u03b1\u03af\u03c1\u03b9 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 AISI 420 vs 304 \u03a7\u03b7\u03bc\u03b9\u03ba\u03ae \u03a3\u03cd\u03bd\u03b8\u03b5\u03c3\u03b7 \u0391\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 \u03c3\u03c4\u03b7 \u03b8\u03b5\u03c1\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1: \u0391\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 \u03c3\u03b5 \u03a3\u03c4\u03b1\u03b8\u03b5\u03c1\u03cc\u03c4\u03b7\u03c4\u03b1 4 \u03c3\u03b5 \u0391\u03bd\u03ac\u03bb\u03c5\u03c3\u03b7 30<\/p>","protected":false},"author":1,"featured_media":4073,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","content-type":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-4004","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-material-selection-guide"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/machining-quote.com\/el\/wp-json\/wp\/v2\/posts\/4004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/machining-quote.com\/el\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/machining-quote.com\/el\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/machining-quote.com\/el\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/machining-quote.com\/el\/wp-json\/wp\/v2\/comments?post=4004"}],"version-history":[{"count":2,"href":"https:\/\/machining-quote.com\/el\/wp-json\/wp\/v2\/posts\/4004\/revisions"}],"predecessor-version":[{"id":4007,"href":"https:\/\/machining-quote.com\/el\/wp-json\/wp\/v2\/posts\/4004\/revisions\/4007"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/machining-quote.com\/el\/wp-json\/wp\/v2\/media\/4073"}],"wp:attachment":[{"href":"https:\/\/machining-quote.com\/el\/wp-json\/wp\/v2\/media?parent=4004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/machining-quote.com\/el\/wp-json\/wp\/v2\/categories?post=4004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/machining-quote.com\/el\/wp-json\/wp\/v2\/tags?post=4004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}