MB-1 | High Cleanliness and High Carbon Steel｜TOKUSHU KINZOKU EXCEL CO., LTD.(TOKKIN)

Cold Rolled Special Steel Strips

High-Cleanliness Steel

MB-1 | High Cleanliness and High Carbon Steel

Overview & Features

MB-1 is our original steel grade, a material lined up for textile machinery parts.
It is a high carbon steel with a Carbon content of about 1.0%. This grade was developed with the aim of achieving high durability to withstand long hours of continuous and high speed use. It has higher cleanliness than made from conventional converter, and its strictly controlled metallurgical structure provides excellent fatigue resistance and wear resistance.

Examples of Applications

Knitting Needles, Knitting Related Parts, Textile Machinery Parts

Available Shapes

Manufacturable Range (COIL, SHEET)

Thickness

0.10-2.0mm

Width

3.0-300mm

Length

COIL or SHEET less than 2000mm

This is the manufacturing range of coils and sheets we manufacture.

Standard

Chemical Composition

Physical Properties

Mechanical Properties

Quenching and Tempering

Cleanliness

Standards

TOKKIN's own grade of steel.
Overseas standards are listed as equivalent or similar to our materials, so please use them as a reference.

DIN

1.1274

Chemical Composition

Physical Properties

The following values are typical values for high carbon steel(Fe-0.8C).

Density

7.84 g/cm³

Magnetism

Strong

Mechanical Properties

The mechanical properties (typical values) of MB-1 in each finish are shown in the table below.

Quenching and Tempering

MB-1is a steel grade that can be quenched.
The general quenching condition is ［Oil cooling at 790～850℃(Water Cooling at 760～820℃ ) ］.
After holding for tens of seconds to several minutes depending on sizes, shapes, required properties, and quenching method, cooling is performed.
Water cooling is harder to quench, but due to the risk of quenching distortion and quench cracking, oil cooling may be used in some cases.
Please select tempering temperature according to required hardness and toughness by referencing quenching and tempering curve.

Cleanliness

This grade has a higher degree of cleanliness than conventional converter steel, aiming for high durability to withstand long hours of continuous use and high-speed use in textile machinery parts.

Steels for Knitting Needles

Our original steel grade, a material lined up for textile machinery parts.

Learn More

Cold Rolled Special Steel Strips

We manufacture carbon steel (SC material) and carbon tool steel (SK material) that conform to "JIS G 3311 Cold Rolled Special Steel Strip" and "JIS G 4802 Cold Rolled Steel Strip for Springs", as well as our own composition-adjusted steel grades for special applications.

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