We have compiled a list of manufacturers, distributors, product information, reference prices, and rankings for Spring steel.
ipros is IPROS GMS IPROS One of the largest technical database sites in Japan that collects information on.

Spring steel Product List and Ranking from 5 Manufacturers, Suppliers and Companies | IPROS GMS

Last Updated: Aggregation Period:Feb 18, 2026~Mar 17, 2026
This ranking is based on the number of page views on our site.

Spring steel Manufacturer, Suppliers and Company Rankings

Last Updated: Aggregation Period:Feb 18, 2026~Mar 17, 2026
This ranking is based on the number of page views on our site.

  1. 天彦産業 本社・工場 Osaka//Ferrous/Non-ferrous metals
  2. アキュレイト 東京カスタマーセンター Tokyo//Ferrous/Non-ferrous metals
  3. レーザマックス Okayama//Manufacturing and processing contract
  4. 4 スガワラ Tokyo//Machine elements and parts
  5. 5 前田テクニカ Mie//Manufacturing and processing contract

Spring steel Product ranking

Last Updated: Aggregation Period:Feb 18, 2026~Mar 17, 2026
This ranking is based on the number of page views on our site.

  1. Sales of JIS G4801 spring steel (SUP10) materials 天彦産業 本社・工場
  2. The relationship between the microstructural changes of steel due to annealing and hardness. アキュレイト 東京カスタマーセンター
  3. Causes of hardening properties and tempering variations in spring steel and their effects. アキュレイト 東京カスタマーセンター
  4. Small lot and prototype support. レーザマックス
  5. The relationship between ski downhill courses and the cooling rate of steel quenching. アキュレイト 東京カスタマーセンター

Spring steel Product List

1~7 item / All 7 items

Displayed results

Sales of JIS G4801 spring steel (SUP10) materials

We will accommodate your needs from small inventory sales to futures contracts. Domestic and international sales, delivery available.

Our company sells a wide range of special steel materials, including coils, sheets, plates, round bars, flat steel, and processed products. Each steel manufacturer produces a variety of unique steel grades tailored to individual needs. Regarding the selection of special steel materials, Tenhiko Sangyo leverages its years of experience to propose suitable materials based on the functionality, performance, manufacturing, and processing processes of our customers' products. We can provide products from standard sizes to cut and processed items according to customer requests. We are also capable of shipping both domestically and internationally. Please check our stock items and detailed information in the attached catalog, and feel free to contact us. We also list limited-time special price items (stock items) in the catalog pages. 【Main Steel Grades Handled】 Carbon Steel for Machine Structures: S45C to S55C, etc. Carbon Tool Steel: SK85 Alloy Tool Steel: SKS5 Alloy Steel for Machine Structures: SCM415, SCM435, SNCM, SCR, etc. Spring Steel: SUP Stainless Steel: SUS We also handle a wide range of other steel grades, sizes, and shapes, including wear-resistant steel plates, aluminum, copper, etc. Please feel free to inquire.

  • Special Steel
  • Spring steel

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Small lot and prototype support.

Delivery anywhere in Japan from just 1 item.

Even if the quantity is small, please feel free to consult us about prototypes, etc. We will deliver anywhere in the country from our various locations and factories. *For more details, please download the PDF or feel free to contact us.

  • Prototype Services
  • Spring steel

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Automotive parts stainless spring steel

Automotive parts, stainless spring steel, SUS301CSP, 0.8t, small lot, press processing.

https://www.nc-net.or.jp/company/88354/product/detail/97430/

  • Inverter
  • Spring steel

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

The relationship between ski downhill courses and the cooling rate of steel quenching.

[Reproduction of Private Spring Preparatory School Lecture 30] Explaining what happens when the cooling speed from high temperatures is changed!

Steel has a stepchild called carbon, and when it is rapidly cooled from a high temperature, it does not undergo a straightforward transformation, but instead becomes a solid solution of carbon in alpha iron. This quenched structure is called martensite. The microscopic structure of martensite is needle-like and very hard. For example, the hardness of martensite in spring steel is about 700 on the Brinell hardness scale. However, not all steels achieve this level of hardness. *For more detailed information, please refer to the PDF. Feel free to contact us for further inquiries.*

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

The relationship between the microstructural changes of steel due to annealing and hardness.

[Reproduction of Private Spring Preparatory School Lecture 31] Explaining how tempered martensite changes through tempering!

Now, just as some people fall while sliding down the same slope, there are those who can slide smoothly, similarly, even when steel is hardened under the same conditions, the degree of hardening varies. This is because the ease of hardening depends on the composition of the steel. For example, spring steel of type 11 contains a small amount of boron in addition to manganese and chromium, which allows it to be hardened even in thick diameters of 60 to 70 millimeters. I will explain this further later. So today, let's study how hardened martensite changes through tempering. *The detailed content of the article can be viewed in the PDF. For more information, please feel free to contact us.*

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Causes of hardening properties and tempering variations in spring steel and their effects.

[Reproduction Private Spring Preparatory School Lecture 56] There are also restrictions on the components of special elements! The composition of JIS spring steel is also determined by this.

The components that increase hardenability are manganese, chromium, silicon, and especially boron, which has a significant effect even in small amounts. Now, if we keep adding such special elements, will the hardenability of spring steel increase, allowing us to make springs of any thickness? Not so fast. First, the properties of the steel will change, making it unsuitable for spring steel, and when it comes to thicker materials, shaping becomes very difficult. Being large is not necessarily a good thing. *For more detailed information, please refer to the PDF. Feel free to contact us for more details.*

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

【Spring Trivia】What is spring steel?

Since it is prone to rust, surface treatment and other measures are necessary! Introduction to carbon tool steel.

Spring steel and carbon tool steel with carbon content of 0.4% or more increase in hardness by 2 to 3 times through heat treatment (quenching). By processing in a soft state before heat treatment and then increasing the hardness afterwards, complex shapes can be formed. They are characterized by low heat resistance and strong magnetism. As a note, they are prone to rust, so surface treatment measures are necessary. 【Overview】 ■ Carbon tool steel, etc., increases in hardness by 2 to 3 times through heat treatment (quenching) ■ Complex shapes can be processed by increasing hardness afterwards ■ Characterized by low heat resistance and strong magnetism *For more details, please refer to the related links or feel free to contact us.

  • Spring
  • Special Steel
  • Spring steel

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration