
Product Description Details
1.2312 tool steel is ideally suited for the production of moulds
where improved machinability is required. Typical applications
include die holders, zinc die casting dies, backers, bolsters and
injection moulds.
The versatility of this plastic mould tool steel with its high tensile characteristics enables uses for a variety of other applications such as shafts and wear strips.
Pre-hardened hardness: 28-32 HRC
1, Grade
W.Nr | DIN | AFNOR | AISI/SAE |
1.2312 | 40CrMnMoS8-6 | (40CMD8S) | P20+S |
2, Application:
1) Used for plastic mould, good polish with corrosion-resisting;
2) Long life and large plastic injection mold products such as home
appliance, computer shell mold;
3) Thermoplastic plastic extrusion die;
4) Blow molding mold and Molding tool.
3, Features:
1) Alloy tool steel which offers good machineability;
2) Excellent polished finish for large section;
3) Supplied in the hardened and tempered condition ready for
machining;
4) In this condition it gives excellent wear resistance.
4, Chemical composition(%)
C | Mn | Si | Cr | Mo | Ni | S+P |
0.28-0.40 | 0.6-1.0 | 0.20-0.80 | 1.40-2.00 | 0.30-0.55 | 0.05-0.10 | ≤0.03 |
5, Phase transition temperature
Ac1 | 740°C |
Ms | 310°C |
6, The hardness of delivery
Pre-hardened and tempered | HB278-325(950-1100N/mm²) |
7, Heat treatment
Annealing | 1) Heated to720-750°C,Two to four hours heat preservation, 2) Furnace cooling |
Stress relief | Preservation 1) Heated to560-650°C and then two to four hours heat 2) Furnace cooling or air cooling |
Pre-hardened | 1) Preheat to 600-650°C 2) Heated to hardening temperature 840-840°C and heat preservation 3) Oil cooling 4) Hardness:HRC51 |
Drawing temper | 1) Immediately after quenching 2) When the 580-650°C,with the 1/inch to heat preservation |
8, Packing: Standard export packing or according to customers' request.
9. About Changfeng Steel
We are a mould steel stockist, main products are plastic mold steel, hot work mould steel, cold work mould steel, alloy steel for mechanical, high speed steel,etc.
We provide high quality products with competitive price, also we arrange fast shipment to satisfy all of our customers.
We are here waiting for a cooperation chance between us, contact us and you will have one more loyal mold steel supplier!
10. The reasons to choose us
1) Competitive price and high quality
2) Accept OEM / ODM orders
3) Smooth production ability(1000tons/month)
4) Approved by ISO9001, CE, SGS every year
5) Quick delivery and standard exporting package
6) Flexible payment with T/T, L/C
7) service with 24 hours reply
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Guangzhou Changfeng Steel Co., LTD
Guangzhou ChangFeng Steel Co., Ltd. is a professional special steel company, which specialized in exporting mould steel products based in China.With twenty years experience in special steel industry, our main products are Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Structural Steel, Tool Steel, Stainless Steel, Carbon Steel and Forged Block.
To ensure provide high quality products to customers, we have close cooperation with many Chinese first class special steel enterprises, including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel, Daye Special Steel. We have thousand tons of stock materials in our own factory and also can provide processing services to customers. We are full of export experience for many years, the product covers America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.
After years of development, the company has established a complete quality management and export service system. We have a group of experienced and competent elites and is capable of offering the best service to clients. Our company equips with large-sized Vertical saw machines, Horizontal saw machines, Milling machines, Grinding machines and other advanced equipments to provide customers with cutting and other processing services. All the products should be inspected the metallographic analysis, hardness, ultrasonic flaw detection and other strict inspection processes, which meet the standards of DIN, AISI, JIS and GB to ensure their function and quality.
Our company keeps the principle of “sincerely cooperation, endless striving for perfection”. We desire to establish the long-term mutual beneficial and win-win relationship with clients all over the world.