Thép khuôn 1.2738

Thép khuôn 1.2738

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:

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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.

 

Các cấp độ tương đươngAnhDIN              AISIJIS DAIDO
3Cr2MnNiMo1.2738 P20+Ni — —
Thành phần hóa họcCSiMnCrPS  Ni  Thứ HaiWOther
0.35-0.480.20-0.401.30-1.601.80-2.100.03MAX0.03MAX0.90-1.200.15-0.25
Kích thước có sẵnThanh trònĐường kínhChiều dài
10–800 mm2.000–6.000 mm
Thanh phẳngĐộ dàyChiều rộngChiều dài
16-1000mm200-2200mm2.000–6.000 mm
Tình trạng bề mặtBề mặt màu đen / Được mài / Được gia công
Độ cứng sau khi ủ28-35 HCR (After tempering )
Đặc điểmGood polishing and photo-etching properties

Good machinability

High purity and good homogeneity                                                                                                                           

Uniform hardness

Ứng dụngInjection 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 .
Xử lý nhiệtAnnealing710 – 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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