2 # Edifício, zona P5 Quan Shui, Distrito de Ganjingzi, Dalian, China

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1.2714

Início>Produtos>Aços para ferramentas de trabalho a quente>1.2714

Aços para ferramentas de trabalho a quente Mat.No. 1.2714, barra redonda DIN 56NiCrMoV7

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Especificações

Designação por Padrões

Esteira. Não.DINENAISI
1.271456NiCrMoV755CrMo8-

Composição Química (em% em peso)

CSiMnCrMoNiVWOutros
0.550.250.751.100.451.650.10--

Descrição:

Nickel hot work tool steel with good hardenability. Uniform hardness over section also at great dimensions. Resistance under impact loadings. Very good strength and toughness. Good tempering resistance and dimensional stability. Tools can be water or air cooled.

Aplicações:

Forging tools, dies of all sorts, shapes and sizes, hot forging and pressing tools for steel and metal. Moulds, bushings, piercers etc. 

Propriedades físicas (valores médios) à temperatura ambiente

Modulus of elasticity [103 x N/mm2]: 215 

Densidade [g/cm3]: 7.84

Condutividade térmica [W/mK]: 36.0 

Resistividade elétrica [Ohm mm2/m]: 0.30

Capacidade de calor específico [J/gK]: 0.46

Thermal conductivity [W/m.K]

20 ° C500 ° C600 ° C
36.036.836.0

Electric resistivity [Ohm mm2/m]

20 ° C500 ° C600 ° C
0.300.700.84

Specific heat capacity[J/g.K]

20 ° C500 ° C600 ° C
0.460.550.59

Coefficient of Linear Thermal Expansion 10ˉ6 °C-1

20-100 ° C20-200 ° C20-300 ° C20-400 ° C20-500 ° C20-600 ° C20-700 ° C
11.712.113.013.514.014.314.6

Soft Annealing:

Heat to 650-700°C, cool slowly in furnace. This will produce a maximum Brinell hardness of 248.

Alívio do stress:

Stress relieving to remove machining stresses should be carried out by heating to 650°C, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

Endurecimento:

Oil: Harden from a temperature of 830-870°C followed by oil quenching. Hardness after quenching is 58 HRC.

Air: Harden from a temperature of 830-900°C followed by air quenching. Hardness after quenching is 56 HRC. 

Têmpera:

Tempering temperature: See the data bellow.

Têmpera em óleo

Tempering Temperature (°C) vs. Hardness (HRC)vvs. Hardness (HRC) vs. Tensile Stregth (N/mm2)

100 ° C200 ° C300 ° C400 ° C450 ° C500 ° C550 ° C600 ° C650 ° C
57555249474542.53935
214019801790162015301440134512301110

Quenching in air:

Tempering Temperature (oC) vs. Hardness (HRC) vs. Hardness (HRC) vs. Tensile Stregth (N/mm2)

100 ° C200 ° C300 ° C400 ° C450 ° C500 ° C550 ° C600 ° C650 ° C
555350474543403732
198018451680153014401360126011701020

Forjamento:

Hot forming temperature: 1050-850°C. 

Maquinabilidade:

Due to its abrasion resistant nature, machining in the hardened condition should be limited to finish grinding.


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