{"id":18250,"date":"2026-09-13T20:39:54","date_gmt":"2026-09-13T12:39:54","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=18250"},"modified":"2026-10-21T11:23:50","modified_gmt":"2026-10-21T03:23:50","slug":"tool-steel-hot-hardness-chart","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/tool-steel-hot-hardness-chart\/","title":{"rendered":"Tabela de Dureza a Quente do A\u00e7o Ferramenta (HRC a 315-650\u00b0C)"},"content":{"rendered":"

tabela de dureza a quente do a\u00e7o ferramenta<\/h1>\n\n\n\n

Dureza a quente — Dureza Rockwell C medida em temperatura elevada<\/a> — para a\u00e7os r\u00e1pidos e a\u00e7os para matrizes selecionados. A tabela mostra como a dureza cai \u00e0 medida que a temperatura de ensaio aumenta, classificando cada grau quanto \u00e0 dureza a vermelho em servi\u00e7o com trabalho a quente e a\u00e7os r\u00e1pidos.<\/p>\n\n\n\n

AISI<\/th>Temperatura ambiente<\/th>315 °C (600 °F)<\/th>425 °C (800 °F)<\/th>540 °C (1000 °F)<\/th>650 °C (1200 °F)<\/th><\/tr><\/thead>
A\u00e7os-ferramenta r\u00e1pidos<\/td><\/tr>
M1<\/a><\/td>65<\/td>61<\/td>58<\/td>54<\/td>32<\/td><\/tr>
M2<\/td>65<\/td>62<\/td>59<\/td>55<\/td>36<\/td><\/tr>
M3, classe 1<\/td>65<\/td>63<\/td>60<\/td>56<\/td>36<\/td><\/tr>
M3, classe 2<\/td>65<\/td>63<\/td>60<\/td>56<\/td>36<\/td><\/tr>
M4<\/a><\/td>66<\/td>63<\/td>60<\/td>56<\/td>37<\/td><\/tr>
M7<\/td>65<\/td>61<\/td>58<\/td>54<\/td>35<\/td><\/tr>
M10<\/td>65<\/td>60<\/td>57<\/td>52<\/td>33<\/td><\/tr>
M30<\/td>65<\/td>63<\/td>58<\/td>55<\/td>35<\/td><\/tr>
M33<\/td>65<\/td>64<\/td>60<\/td>57<\/td>40<\/td><\/tr>
M36<\/td>65<\/td>64<\/td>60<\/td>57<\/td>40<\/td><\/tr>
M42<\/td>68<\/td>66<\/td>65<\/td>62<\/td>44<\/td><\/tr>
M50<\/td>64<\/td>59<\/td>57<\/td>52<\/td>—<\/td><\/tr>
M52<\/td>64<\/td>60<\/td>57<\/td>53<\/td>—<\/td><\/tr>
T1<\/td>65<\/td>61<\/td>57<\/td>53<\/td>33<\/td><\/tr>
T4<\/td>65<\/td>61<\/td>59<\/td>55<\/td>38<\/td><\/tr>
T5<\/td>66<\/td>62<\/td>60<\/td>56<\/td>40<\/td><\/tr>
T15<\/td>68<\/td>64<\/td>61<\/td>57<\/td>42<\/td><\/tr>
A\u00e7os para matrizes de trabalho a frio<\/td><\/tr>
A2<\/td>60<\/td>52<\/td>46<\/td>35<\/td>—<\/td><\/tr>
A8<\/td>58<\/td>55<\/td>52<\/td>45<\/td>—<\/td><\/tr>
D2<\/td>60<\/td>53<\/td>47<\/td>38<\/td>—<\/td><\/tr>
D4<\/td>62<\/td>52<\/td>46<\/td>37<\/td>—<\/td><\/tr>
A\u00e7os para matrizes de trabalho a quente<\/td><\/tr>
H11<\/td>54<\/td>49<\/td>47<\/td>42<\/td>22<\/td><\/tr>
H12<\/a><\/td>54<\/td>49<\/td>47<\/td>42<\/td>22<\/td><\/tr>
H13<\/td>55<\/td>49<\/td>47<\/td>42<\/td>22<\/td><\/tr>
H19<\/a><\/td>54<\/td>51<\/td>47<\/td>42<\/td>31<\/td><\/tr>
H21<\/td>54<\/td>52<\/td>49<\/td>45<\/td>29<\/td><\/tr>
H23<\/td>41<\/td>32<\/td>30<\/td>28<\/td>25<\/td><\/tr>
H26<\/td>58<\/td>54<\/td>50<\/td>46<\/td>31<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n