Frequently Asked Questions
Frequently Asked Questions
- Features of NSSC431DP-2
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NSSC431DP-2 has a composite microstructure consisting of Ferrite and Martensite phases.
Its main chemical composition is 16.5% Cr and 2% Ni, which makes it more cost-effective compared with
commonly used austenitic high-strength stainless steels such as SUS304 (18% Cr – 8% Ni).
The material has a fine dual-phase microstructure, resulting in low burr height after punching
and excellent punchability.
This also helps reduce the load on dies and molds, enabling a significant reduction in both material and processing costs.
Application example：Press plates / Lapping carriers / Metal gaskets / Metal masks
- Can you provide export packing?
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We can provide export packaging to meet international shipping requirements.
After packaging, the products can be delivered to a designated location.
With extensive experience in export business, we are capable of shipping to countries worldwide.
- What is bainitic steel and where is it used?
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Bainitic steel is a heat-treated carbon steel (such as S55C or S60C) in which the microstructure is transformed into a bainitic structure.
Compared to hardened steel, it is produced with lower hardness and improved workability.
We stock bainitic steel manufactured by Nippon Steel Corporation. Steel type code is NBS55 and NBS60.
Bainitic steel is commonly used for leaf springs and excellent in processability.
It is also suitable for bending processes, offering better formability than hardened steel.
- Our processing supplier has closed down. Can you support beyond material supply?
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Yes. We work closely with a trusted processing partners and can supply finished product as well as material supply.
Please feel free to contact us for consultation.
- We have obtained a sample, but we do not know the steel grade. Can it be identified?
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Yes. We can identify the steel grade by using our X-ray fluorescence analyzer(XRF).
An analysis report will be provided with the test results. - What is special steel and where is it used?
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Special steel is a type of steel whose performance is maximized through final heat treatment.
Heat treatment increases hardness, providing excellent toughness for spring applications and high wear resistance for sliding surfaces.
Typical applications include various leaf springs requiring toughness,
as well as thrust plates and bearing retainers where wear resistance is critical.
We stock SK85, N63C, SUJ2, SCR420 and bainitic steel. - What is the difference between cold-rolled material and polished material?
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Both are produced through cold rolling and annealing.
However, polished material undergoes these processes multiple times to achieve higher thickness accuracy.
Polished material is manufactured with more time and effort, which results in higher cost compared to standard cold-rolled material.
- What does “CSP” mean ?
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CSP stands for cold-rolled steel for spring applications.
However, “CSP” alone is an incomplete designation and it is completed when a finishing notation is added after CSP.
For stainless steel spring materials, CSP is typically followed by hardness grades such as H, 3/4H, or 1/2H, which together form the correct designation.
In practice, “CSP” is often omitted, and the material is commonly identified only by the hardness grade.
For example, SUS304-H and SUS301-3/4H are formally designated as SUS304CSP-H and SUS301CSP-3/4H.
Please free to contact us first about Special steels and Stainless steels.
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