1.2714 / L6 / 5CrNiMo / SKT4 Hot Work Mold Steel of Special Tool
Steel for Large Forging Dies
Alloy tool steel with lower content of alloy elements. It is also
the traditional hammer forging die steel. It has good toughness,
strength and wear resistance, hardenability, and 300 * 300 * 400mm
workpiece can be fully quenched. The utility model is suitable for
producing large and medium-sized hammer forging dies (>400mm)
with complicated shape and heavy impact load.
► Chemical Composition(%)
| Grade | C | Si | Mn | Cr | Mo | P | S | Ni | V |
| 5CrNiMo | 0.50-0.60 | ≤0.4 | 0.50-0.80 | 0.50-0.80 | 0.10-0.30 | ≤0.030 | ≤0.030 | 1.40-1.80 | - |
| L6 | 0.65-0.75 | 0.10-0.50 | 0.25-0.80 | 0.60-1.20 | ≤0.5 | ≤0.030 | ≤0.030 | 1.20-2.00 | - |
| 1.2714 | 0.50-0.60 | 0.10-0.40 | 0.60-0.90 | 0.80-1.20 | 0.35-0.55 | ≤0.030 | ≤0.030 | 1.50-1.80 | 0.55-0.15 |
| SKT4 | 0.50-0.60 | 0.10-0.40 | 0.60-0.90 | 0.80-1.20 | 0.35-0.55 | ≤0.030 | ≤0.020 | 1.50-1.80 | 0.55 |
► Available Dimension
| Thickness (mm) | Width (mm) | Length (mm) |
| 300-800 | 600-1200 | 2000-6000 |
► Features
a. Heat resistant wear-resistant forged steel, excellent impact
resistance, with proper hardness and good toughness.
b. The composite has good mechanical properties and high
hardenability, and can make the steel with larger section size
obtain a more uniform hardness.
c. Good optical rotation performance is made on the surface of the
mold with low roughness value of 90.
d. Quenching and tempering treatment, hardness of 52 ~ 62HRC (pre
hardening),
e. Can be used directly after cold processing into mold, ensure the
use of the mold performance, but also to avoid the heat treatment
caused by the deformation of the mold.
► Application
a. The steel is used to make all kinds of big and medium hot
forging dies
b. Suitable for all kinds of medium and large hammer forging dies
with complex shape and heavy impact load
c. A large forging die requiring better toughness than 5CrMnMo.
► Recommend Heat Treatment
| Quenching | Tempering |
| Heating temperature(ºC) | Cooling way | Hardness (HRC) | Tempering temperature(ºC) | Tempering number | Hardness (HRC) |
| First preheating | Last heating |
| 600-650 | 830-860 | Oil Cooling | 52-62 | 150-180 | 1 | 53-58 |
► Process: EAF + LF + VD + Forged + Heat Treatment (optional)
► Payment: 30% advance by T/T; Balance pay before the shipment against
shipping documents or irrevocable LC at sight.
► Delivery condition: For abundant stock, 7-15 days.For customized products, 30-50 days.
Company Profile
Guangzhou ChangFeng Steel Co.,Ltd, is located in Guangzhou city, it
was established in 2012,and is an Professional import and export
company with ten years experience of selling special steel, which
mainly sells plastic die steel, hot work die steel, cold work mould
steel, alloy structural steel, bearing steel, tool steel, stainless
steel, carbon steel, etc.We also act on behalf of exporting steels
of mainly steel factories in China, including Baogang group,Shagang
group, Wenfeng group, Xingcheng group, Dongte group, Daye and so
on.We are full of export experience to the market all over the
word, such as America, Germany, France, Italy, Turkey, Singapore,
Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.
