precision forging SKD11 die steel forgings

precision forging SKD11 die steel forgings

SKD11 is a high wear-resistant and tough general cold working die steel, high carbon high chromium alloy tool steel and vacuum degassed refined steel. The steel is pure and has good hardenability and small quenching deformation. The steel is softened by spheroidizing annealing, has good machinability, and the carbide particles are fine and uniform. There is no need to worry about quenching cracking. Special addition of strengthening elements molybdenum and vanadium.

Chinese name SKD-11

Properties Japanese tool steel grade

Chemical composition C carbon 1.40-1.60

Supply status annealed, hardness ≤255HBS

Function;

SKD11 is produced by Hitachi and Datong Steel Plant. Hitachi's SKD11 product name is SLD (the latest improved version is called SLD-MAGIC), and Datong Steel Plant's product name is DC11. Both have factories in the mainland, are the most well-known in the industry, and have the highest price. This steel is an air-cooled hardening cold working die steel widely used internationally. After smelting in an electric furnace and re-dissolving in an electroslag, it has high purity, better toughness, uniform structure, good high temperature strength, toughness and high temperature fatigue resistance, and can withstand sudden temperature changes.

High hardness, high wear resistance, uniform eutectic carbides, good toughness, not easy to crack, hardness > 62HRC after quenching. The nitriding treatment time at 525℃ is 20h/30h/60h, the nitriding layer depth is 0.25mm/0.30mm/0.35mm, and the surface hardness of the part is 1250HV; the nitriding treatment time at 570℃ is 2h, the nitriding layer depth is 10~20μm, and the surface hardness of the part is 950HV.

Chemical composition

C Carbon 1.4~1.6

Si Silicon ≤0.40

Mn Manganese ≤0.60

P Phosphorus ≤0.030

S Sulfur ≤0.030

Cr Chromium 11.0-13.0

Mo Molybdenum 0.80-1.20

Ni Nickel ≤0.50

V Vanadium 0.20-0.50

Cu Copper ≤0.25

Corresponding grades

China GB standard grade Cr12Mo1V, Taiwan CNS standard grade SKD11, Germany DlN standard material number 1.26o1, Germany DIN standard grade x165CrMoV12, Japan Jis standard grade SKD11, South Korea Ks standard grade STD11, Italy UN1 standard grade x165CrM0W12KU, Sweden SS standard grade 2310, Spain UNE Standard grade X160CrM0V12, American AISi/sAE standard grade D2, Russian ROCT standard grade x12M.

Features

1. Good high temperature strength and toughness, good wear resistance, easy to cut;

2. SKD11 is a cold die steel with high strength, toughness and heat resistance balance. In recent years, with the development of isotropic products, it has been increasingly developing towards high toughness. It can make the die life longer, the performance more stable, and easy to process, with small heat treatment deformation.

Product Features

(1) Vacuum degassing and refining, so the internal quality is extremely clean.

(2) Good machinability.

(3) Good hardenability, air cooling can harden, no need to worry about quenching cracks.

(4) Very small heat treatment deformation, extremely small quenching deviation, most suitable for molds with precision requirements.

(5) Excellent wear resistance, most suitable for blanking dies for stainless steel or high-hardness materials.

(6) Good toughness. Cryogenic treatment

To obtain the highest hardness and dimensional stability, the mold is immediately cryogenically cooled to -70 degrees Celsius to -80 degrees Celsius after quenching, kept for 3-4 hours, and then tempered. The hardness of the tool or mold after cryogenic treatment is 1-3HRC higher than that of the conventional heat treatment. For parts with complex shapes and large dimensional changes, cryogenic treatment is at risk of cracking.

Company introduction:

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. was established in 1997. It is a professional manufacturer of rough forgings engaged in manufacturing and processing automotive parts, marine gearbox accessories, and engineering machinery accessories. It can forge materials such as copper alloys, titanium alloys, aluminum alloys, carbon steel, stainless steel, and high-temperature alloys. The company covers an area of ​​more than 10,000 square meters and a standard factory building of 5,000 square meters. It has a complete set of advanced production technologies and equipment from mold design, development, parts manufacturing and processing. It has multiple die forging production lines mainly based on 4000T, 2500T, 1600T, 1000T, and multiple auxiliary production lines. The annual output is 15,000 tons. Exported to more than 20 countries and regions including Germany, the United States, the United Kingdom, France, Russia, etc.