1. SCM440 Steel Round Bar (Diameter 45 mm - 180 mm) steel grade

SCM440 Japan steel round bar is grade steel produced according to JIS standards. In addition, the name SCM440 steel also has the following equivalent steel grades:

- Grade 4140 steel + Hardness according to American AISI standards.

- Steel grade 7225 + Hardness according to DIN standards of Germany.

- Grade PDS3 + Hardness by Nippon manufacturer according to JIS standards of Japan.

- Grade SCM440H steel according to Korean standard KS 3754 or Japanese standard JIS 4052.

2. SCM440 steel characteristics

SCM440 steel round bar is a kind of chromium-molyden steel with outstanding features such as:

- Good resistance to form recognition.

- Good cutting machining.

- Hardness uniformity of all sizes.

- Easily machined by EDM.

SCM440 steel round bar (diameter 190 mm - 220 mm) 

Specification (size) of SCM440 steel round bar according to manufacturer standards:

- Diameter: 45 mm - 180 mm;

- Length: 5500 mm.

The hardness of SCM440 steel after heat treatment (annealing) has a hardness: 50 HRC - 55 HRC.

3. Chemical composition of steel SCM440

SCM440 round bar steel has the following basic chemical components:

- Carbon content accounts for about 0,37% - 0,44%;

- Chromium content accounts for about 0,85% - 1,25%;

- Molipden content accounts for about 0,15% - 0,35%;

- Silicon content accounts for about 0,15% - 0,35%;

- Manganese content accounts for about 0,55% - 0,95%;

- Phosphorus content accounts for about <= 0,03%;

- Sulfur content accounts for about <= 0,03%.

- Copper content accounts for about 0,3;

- Nickel content accounts for about 0,25.

4. Application of round bar  SCM440 steel

With the combination of chemical composition, Round bar Japanese SCM440H steel has good deformation resistance and abrasion resistance commonly used as plastic molds and with a number of other applications such as:

- Gear;

- Making shaft of bearings;

- Accessories;

- Machine details;

- Cutting board;

- The first clamp of the furnace.

Contact with Sevit via:

  * Website: 0332 91 61 61

  * Fanpage: Sevit Special Steel

  * Zalo: Sevit Special Steel