AISI P20 + ni / 1.2738, DIN 40CrMnNiMo8-6-4
- Grade:
Clique Para Email do Vendedor
Partilhar este anúncio
Especificação, Chemical & desempenho mecânico
esignation by Standards
| Marca | Ravne No. | Esteira. Não. | DIN | EN | AISI |
| UTOPNIN | 249 | 1.2738 | 40CrMnNiMo8-6-4 | - | P20 Mod. |
Composição quimica (em% em peso)
| C | Si | Mn | Cr | Mo | Ni | V | W | Outros |
| 0.40 | 0.30 | 1.45 | 1.95 | 0.20 | 1.05 | - | - | - |
Descrição
This steel is in the category generally labeled as Mold Steels. Nickel and chromium are the alloying elements for hardness and toughness. Cold work tool steel with good machinability, excellent polishability, suitable for texturing. Improved through hardenability comapred to Mat.No. 1.2311.Aplicações
Typically used for relatively low temperature applications such as die casting dies and injection molds, synthetic plastic moulds dies, for large moulds.Propriedades físicas (valores médios) à temperatura ambiente
Módulo de elasticidade [103 x N / mm2]: 205
Densidade [g / cm3]: 7.80
Condutividade térmica [W / mK]: 29.0
Capacidade térmica específica [J / gK]: 0.46Coeficiente de Expansão Térmica Linear 10-6oC-1
| 20-100oC | 20-200oC | 20-300oC | 20-400oC | 20-500oC | 20-600oC | 20-700oC |
| 11.7 | 12.3 | 13.0 | 13.3 | 13.7 | 13.7 | 14.0 |
Continuous Cooling Transformation (CCT) Diagram
Recozimento macio
Aquecer para 710-740oC, esfrie lentamente. Isso produzirá uma dureza Brinell máxima de 235.Aliviar o estresse
Stress relieving to remove machining stresses should be carried out by heating to 650oC, mantendo por uma hora no calor, seguido de resfriamento do ar. Esta operação é realizada para reduzir a distorção durante o tratamento térmico.Endurecimento
Endurecer de uma temperatura de 840-880oC followed by oil, air ot warm bath (180-220oC) quenching. Hardness after quenching is 52 HRC.Temperamento
Tempering temperature: See the data bellow.Temperatura de Revenimento (oC) vs. Hardness (HRC) vs. Tensile Stregth (N/mm2)
| 100oC | 200oC | 300oC | 400oC | 500oC | 600oC | 700oC |
| 52 | 51 | 49 | 46 | 42 | 36 | 28 |
| 1790 | 1730 | 1620 | 1480 | 1330 | 1140 | 920 |
Diagrama de têmpera
Forjar
Temperatura de conformação a quente: 1093-898oC.Usinabilidade
Machinability is relatively good at about 80% that of the W group water hardening steels.Soldagem
This alloy is weldable by conventional methods. Contact the alloy supplier for details and weld procedures.Aviso Legal
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available
