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China Silicon Steel Manufacturer & Exporter | High-Quality Steel Products | Baowu

1.2738 Aço para moldes

1.2738 mould steel is no ordinary mould steel. It is a specially engineered, pre-hardened premium plastic mould steel. Its core value lies in:

Zoe@baowuchina.com
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Detalhes do produto

Ⅰ.What is 1.2738 mould steel? What makes it distinctive?

 

1.2738 mould steel is no ordinary mould steel. It is a specially engineered, pre-hardened premium plastic mould steel. Its core value lies in:

 

‘Pre-hardened and ready to use’ – saving time and effort: The material undergoes precise tempering (pre-hardening) before leaving the factory, achieving an ideal hardness range of approximately HRC 30-36. This eliminates the need for complex and time-consuming quenching and tempering processes upon receipt, significantly shortening the mould manufacturing cycle. It also reduces the risk of heat treatment deformation, keeping project timelines firmly under control.

 

Graus equivalentesGBDIN              AISIJIS DAIDO
3Cr2MnNiMo1.2738 P20+Ni — —
Composição químicaCSiMnCrPS  Ni  MoWOther
0.35-0.480.20-0.401.30-1.601.80-2.100.03MAX0.03MAX0.90-1.200.15-0.25--
Tamanho disponívelBarra redondaDiâmetroComprimento
10-800mm2000-6000mm
Barra planaEspessuraLarguraComprimento
16-1000mm200-2200mm2000-6000mm
Estado da superfícieSuperfície preta/ Rectificada/ Maquinada
Dureza recozida28-35 HCR (After tempering )
CaraterísticasGood polishing and photo-etching properties

Good machinability

High purity and good homogeneity                                                                                                                           

Uniform hardness

AplicaçõesInjection moulds for thermoplastics
Extrusion dies for thermoplastics
Blow moulds
Forming tools, press – brake dies (possibly flame hardened or nitrided )
Aluminium die casting prototype dies
Structural components, shafts .
Tratamento térmicoAnnealing710 – 730 °C
Hardness after annealingMax. 240 HB
Stress relievingApprox. 600 °C
Hot forming1050 – 850 °C
Hardening870 – 890 °C
Quenching mediaOil, Salt bath, Vacuum
Hardness after quenching50 – 54 HRC
Hardness after tempering100 °C200 °C300 °C400°C
52HRC51HRC49HRC46HRC

 

Pure lineage, stable and reliable: Premium 1.2738 employs advanced smelting techniques (e.g., EAF+LF+VD), ensuring high purity and uniform, dense microstructure. This inherently endows it with outstanding toughness, dimensional stability, and exceptional polishing performance, fundamentally guaranteeing long mould life and consistent product quality.

 

All-round performer, balanced performance: In its pre-hardened state, it perfectly balances high toughness, excellent machinability (cutting, milling, EDM), outstanding polishing capability (achieving mirror-like A1 grade), and superb etching performance. This makes it the ideal choice for manufacturing high-quality plastic products with stringent requirements.

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