ASTM Standard Alloy Steel Round Bar For Mechanical Mill Certificate

1.6523/SAE8620/20CrNiMo Alloy Steel Round Bar for mechanical 

1.6523/SAE8620/20CrNiMo Alloy Steel Round Bar for mechanical with diameter 22-200mm

Chemical Composition

1.Feature:
1) Demand has high yield strength, tensile strength and fatigue strength, there has enough plasticity
and toughness;
2) Demanding by refining outside the furnace, vacuum electroslag remelting or processing, or double vacuum smelting, vacuum induction furnace smelting suitable heat treatment;
3) Corrosion resistant steel, heat-resistant steel, wear-resistant steel, magnetic steel, and other
special physical and chemical properties of the steel;

2.Application:
1) Zinc, aluminum, magnesium and other alloy die-casting molds;
2) Heat dies and all kinds of hot forged molds;
3) Metal extrusion die holder;

3. Ready Stock:
Round bar dia20-100mm black surface and hot rolled deliver condition.

4. Heat Treatment
1) Preheating 2-4 hours in 500-600°C
2) Keeping temperature for 2 hours in 850-880°C
3) Oil cooling to reach 50-100°C
4) After quenching can reach a hardness of 50-52HRC, then tempered at 200°C
then hardness can reach above 48 HRC

5.Melting Process
1) EAF:Electric Furnace+LF+VD (Optional)
2) ESR:Electric Furnace+LF+VD+Eleroslag Remelted (Optional)


6.Packaging Details:
Packed with plastic film, seaworthing packing, others according to customers' requirements

7.Delivery time:
For abundant stock, 15-20 days.

For customized products, 30-50 days.

8. Payment term: T/T or L/C

All the sizes as require can be customerized as fresh production with MOQ,products of required specifications can be developed/produced per international, chinese or industry standards, or based on agreements with customers.

About us:
Guangzhou ChangFeng Steel Co., Ltd. is a professional special steel company, which specialized in exporting mould steel products based in China. With more than 20 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.

Warehous

Processing

Strict Quality Control