Cold Rolled Special Steel Strips
High-Cleanliness Steel
Knitting Needles, Knitting Related Parts, Textile Machinery Parts
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.
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
The following values are typical values for high carbon steel(Fe-0.8C).
Density
7.84 g/cm³
Magnetism
Strong
The mechanical properties (typical values) of MB-1 in each finish are shown in the table below.
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.
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.
Our original steel grade, a material lined up for textile machinery parts.
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.