Good polishing and photo-etching properties Alloy Die Block AISI
P20+NI/718H/1.2738
Product Introduction
718H is a vacuum-melting chromium-nickel-molybdenum alloy steel
that has been hardened and tempered before it leaves the factory.
It offers the following advantages: No risk of quench cracking and
heat treatment; no need for heat treatment; shorten the cycle time;
Cost (for example, without overseas Chinese is deformation); easy
to amend the mold; nitriding and surface hardening can be applied
to improve the mold surface hardness and wear resistance.
718H steel is pre-hard mirror anti-acid plastic mould steel. The
steel pre-hardened, uniform material, high cleanliness, excellent
polishing performance and lithography. Also has high hardenability,
good electrical processing performance and striae processing
performance. Pre-hardened steel without quenching can also be used
for the mold bore, flange flame hardening can be implemented, the
hardness can be increased to 52HRC.
Advantages/Features
Good polishing and photo-etching properties
Good machinability
High purity and good homogeneity
Uniform hardness
No hardening risks
No hardening costs
Time saving (i.e., no waiting for heat treatment)
Lower tool cost (e.g., no distortion to rectify)
Modifications easily carried out
Can be subsequently nitrided to increase surface wear resistance
and locally flame hardened to reduce surface damage.
Similar Standards
| Chinese | American | German | Japanese | Swedish |
| GB | AISI | DIN | JIS | ASSAB |
| 3Cr2NiMnMo | P20+Ni | 1.2378 | PDS5S | 718 |
Chemical Composition
| Grades | C | Si | Mn | P | S | Mo | Ni |
| 1.2738 | 0.35-0.46 | 0.2-0.4 | 1.3-1.6 | ≤0.035 | ≤0.005 | 0.15-0.25 | 0.9-1.2 |
| 718/3Cr2NiMnMo | 0.28-0.40 | 0.2-0.8 | 0.6-1.0 | ≤0.030 | ≤0.030 | 0.30-0.55 | 0.8-1.2 |
| P20+Ni | 0.32-0.40 | 0.2-0.4 | 1.0-1.5 | ≤0.030 | ≤0.035 | 0.30-0.55 | 0.8-1.2 |
Heat Treatment
| Quenching | Tempering |
| Heating Temperature/℃ | Cooling | Hardness/HRC | Heating Temperature/℃ | Cooling | Hardness/HRC |
| 840-870 | Air | ≥50 | 550-640 | Air | 28-36 |
General Applications
Injection moulds for thermoplastics
Extrusion dies for thermo plastics
Blow moulds
Forming tools, press-brake dies (possibly flame hardened or
nitrided)
Aluminium die casting prototype dies
Structural components, shafts
Stock Size
| steel plate | Hot Rolled | Thickness | 20-150mm |
| Width | 2200mm |
| Length | 2000-8000mm |
| Hot Rolled | Thickness | 155-300mm |
| Width | 1600mm |
| Length | 4000-8000mm |
| steel block | Thickness | 300-1000mm | |
| Width | 800-1600mm | |
| Length | 2000-6000mm | |
Why choose us?
Quality Assurance from government owned steel mills
At die & tool steel , we meticulously source materials only from
steel manufacturers to ensure consistency in providing the finest
quality steel products for our customers.
Being in the competitive market today, we clearly understand that
customers are looking for products that are not only best in class
but also affordably priced. We are confident that we are able to
ful fil these two equally vital aspects –our customers' continuous
support over the past two decades is the most heartfelt recognition
to us.
Speedy and Timely Delivery
Knowing that delivering goods to customers' hands on time is as
important as providing quality goods, we treat every business
transaction as a priority. Be it a raw material or a finished
material with machining or heat treatment, every effort will be
made to get your purchase order to you in the shortest lead time.
Quality Commitment
In order to realise competitive products to fulfil our customers'
demands and quality considerations, our integrated quality and work
management system is continuously being improved and developed
further. We document this for our customers by having our quality
management system certified in accordance with ISO 9001. This
measure is accompanied by audits and recertification's on a
regularly prescribed basis.
Our service
We provide quality special steel for all industries.
Orders of any size, any length, ship fast
We carry a unique inventory of specialty special steel
Provide related value-adding services :
metal cutting, sizing, machining (blanking, milling, grinding), and
heat treatment.
Sawing for small or large quantities, sawing-to-size.
Excellent customer service
Contact Us
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