Akiyama Seiko Co., Ltd.

Akiyama Seiko Co., Ltd.

鋼の力

Japan Quality

Specialty steel
with top-tier quality and precision

Akiyama Seiko Co., Ltd.

About Us

Our company, founded in 1927, is a specialized manufacturer of special steel round bars.
In the early Showa period, when Japan’s industrial sector was just beginning to develop, we succeeded in domestic production of free-cutting steel, which had previously relied on imports.
Free-cutting steel is an essential metal material for precision machinery components and is used in various machine parts such as automobiles, watches, home appliances, and PCs.

Akiyama Seiko Co., Ltd.

Do you have any troubles like these?

✓Are you experiencing machining problems caused by poor material quality?
✓Are difficult-to-machine materials shortening your cutting tool life?
✓Do you need lead-free materials without a significant loss of machinability?
✓Do you want to improve corrosion resistance while maintaining strength?

Let us handle it!

Our Strength

At our company, we specialize in free-cutting steel and other special steels, offering industry-leading quality and a broad range of materials to meet the diverse needs of our customers.

Our materials, which feature excellent machinability, high precision, corrosion resistance, and strength, help solve various manufacturing challenges, improve productivity, and prevent operational issues.

In addition, by supplying the required quantities in a timely manner according to customer needs, we have earned overwhelming support from manufacturing sites.

Let us introduce some of our highly recommended products.
AUSTENITIC STAINLESS STEEL

ASK-3000T

First, we present the austenitic stainless steel “ASK-3000T.”
This is a free-cutting stainless steel based on SUS304, which improves machinability while maintaining high corrosion resistance.
It enables the manufacturing of components that are difficult or even impossible to process with SUS304, dramatically increasing productivity.
ASK-3000T
Raw material “ASK-3000T”
ASK-3000T Machinability and Corrosion Resistance
AUSTENITIC STAINLESS STEEL

ASK-8000

Next, we introduce the austenitic stainless steel “ASK-8000.”
This is a high-strength austenitic stainless steel with excellent corrosion resistance, requiring no heat treatment.
Since heat and surface treatments can be omitted, significant reductions in manufacturing costs are possible.
ASK-8000
Raw material “ASK-8000”
ASK-8000 Machinability and Corrosion Resistance

Promotion Video

Service

Manufacturing and sales of special steel round bars used for cutting processes in precision and electronic device components (such as free-cutting stainless steel, free-cutting steel, medium carbon steel, high carbon steel, etc.)

GLOBAL SUPPLY

VIETNAM PLANT / SOUTHEAST ASIA SUPPLY

At our Vietnam plant (ASV), we can produce materials of the same high quality as in Japan, and we can smoothly supply them to Thailand and other Southeast Asian countries.

Akiyama Seiko manufacturing

Main Products

ASK Original Steel
Free-Cutting Steel
Carbon Steel
Tool Steel
Stainless Steel
Lead-Free Free-Cutting Steel
High-Performance Stainless Steel
Various JIS Standard Steels
Akiyama Seiko factory
Akiyama Seiko manufacturing

Message

In Japan, ASK Brand materials are well-known in the field of cutting processes, but they are still relatively unknown to customers overseas.
We would like to first introduce you to the wide variety of materials we offer, which hold the potential to solve manufacturing challenges and enhance productivity.
Please feel free to contact us.

Akiyama Seiko Co., Ltd.

PIC:Hideyuki Ushiyama

Contact us

Company

Akiyama Seiko Co., Ltd.

Ishioka Factory: 2-2 Kashiwabara, Ishioka City, Ibaraki
Head Office: ASK Nihonbashi Building, 15-17 Nihonbashi-Kodenmacho, Chuo-ku, Tokyo, Japan

Phone +81-3-3663-0311(Head Office)

Akiyama Seiko

Company Profile

Representative
President Shigeru Akiyama

Established
June 1952

Capital
100 million yen

Revenues
10.6 billion yen (fiscal year ended March 2026)

Employees
202 (as of July 2026)

Certifications
ISO 9001 (Company-wide), ISO 14001 (Ishioka Factory)

Overseas bases
AKIYAMA-SC (VIETNAM) Co., Ltd.

Our company has obtained ISO 9001 certification across all departments, and we supply materials for automotive components, ensuring a robust quality control system.

Corporate Website

https://www.ask-akiyama.co.jp/

Our manufacturing sites

Akiyama Seiko Co., Ltd.

Comprehensive after-sales service

We also provide comprehensive after-sales service, and we are fully committed as a company to assisting with material selection, consulting on processing techniques, and providing relevant documentation through our dedicated departments.
The materials you can rely on for any application — that is the "ASK Brand."

If you have any questions or concerns about our products, please feel free to contact us.

Contact us

Akiyama Seiko Co., Ltd.

Ishioka Factory: 2-2 Kashiwabara, Ishioka City, Ibaraki
Head Office: ASK Nihonbashi Building, 15-17 Nihonbashi-Kodenmacho, Chuo-ku, Tokyo, Japan

Phone +81-3-3663-0311(Head Office)