
Alloy Steel D2 1.2379 Hot Rolled Steel Bar
D2 is a high carbon, high chromium cold work tool steel. Recommended
for use when greater toughness is required. It offers good wear
resistance and high compressive strength.
1. Chemical composition(%):
C | Cr | Mn | Mo | Si | V | P | S |
1.4-1.6 | 11-13 | 0.3-0.5 | 0.7-1.2 | 0.30-0.5 | ≤0.8 | ≤0.025 | ≤0.025 |
2. Available size(mm):
Flat Bar Size(mm) | Round bar Size(mm) | |||
Thickness | Width | Length | Diameter | Length |
6-160 | 155-810 | 3000-6000 | 50-120 | 3000-6000 |
3. Recommend heat treatment:
Quenching | Tempering | ||||||
Heating temperature/ºC | Cooling way | Hardness (HRC) | Tempering temperature /ºC | Tempering number | Hardness (HRC) | ||
First preheating | Second preheating | Last heating | |||||
600-650 | 800-850 | 1020-1040 | Air Cooling | 61-63 | 500-560 | 2 | ≥58 |
4. Application:
For metal stamping die, drawing die, stainless steel sheet punching
die, high hardness punching die, cutting knife mold, Roll Die,
metal parts production, machinery manufacturing etc.
5. Features:
a. Good processing, heat treatment size stability.
b. Excellent machinability.
c. Excellent dimensional stability when hardened.
d. After hardening and tempering, the high surface hardness match
well with the toughness of the body.
6. Delivery condition:
Surface: Grinding surface, black surface, turned surface and
milling surface according to customer's requirements.
For abundant stock, 15-20 days.
For customized products, 30-50 days.
7. Packing: We provide Standard export packing or according to customers'
request.
8. Terms of payment: 30% deposit T/T and the balance by L/C at sight, or T/T
Heat Treatment
DIN 1.2379 steels alloy should be preheated very slowly to 815℃
(1500°F) and the temperature can be increased to 1010oC (1850°F).
Then held at 1010oC (1850°F) for 20 to 45 minutes and air-cooled
(air quenched).
Annealing
Annealing of 1.2379 tool steels material should be done at 871 to
898°C (1600 to 1650°F) followed by slow furnace cooling at 4.4°C
(40°F) per hour or less, after which cooling rate could be
increased. At the same time, must do something to prevent excessive
carburization or decarburization.
Product:
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.