Hardness Testing

Industries & Applications

Examples of Where Our Springs Have Been used By utilizing our spring manufacturing technology that we have nurtured over the years,

we have solved a whole host of spring-related issues in various fields.

Tokai Spring's Forum

Products by Application　Hardness Testing

Product Name：Coil springs, rectangular-wire helical springs, disc springs, torsion springs, flat springs, and all other types

Spec：

Capable of testing springs from other manufacturers as well

Benefits of Requesting Hardness Testing from Tokai Spring Industries

Evaluating Spring Performance Alongside Hardness

While many testing institutions can conduct general material hardness testing, as a spring expert, Tokai Spring Industries performs hardness measurements that consider the spring’s shape and application.

We don’t just treat hardness test results as simple numerical values. Instead, we analyze and offer proposals based on springs’ unique characteristics and applications. For example, based on a spring’s hardness, we can provide practical feedback and optimal recommendations, such as identifying manufacturing process issues or evaluating the impact on the spring’s performance and durability.

To address spring performance issues, Tokai Spring Industries owns hardness testing machines suitable for various types and shapes of springs. The information obtained from hardness testing can help improve existing springs and contribute to our clients’ product development.

INCONELX750
INCONEL718
SUS304-WPB(Correspond to S30400, 1.4301, X5CrNi18-9)
SUS316-WPA(Correspond to S31600, 1.4401, 1.4436, X5CrNiMo17-12-2, X5CrNiMo17-12-3)
SUP10(Correspond to 51CrV4,6150)
SWOSC-V(Correspond to 55SiCr6-3)
SKD(Correspond to H21, X30WCｒV9-3)

etc….

Applicable spring types

Coils springs
Disc springs
Flat springs
Rectangular-wire helical springs
Extension spring
Torsion spring
Friction springs
Flat spiral springs
Volute springs
Springs with special shapes

etc….

Available Equipment

Brinell Hardness Tester
Rockwell Hardness Tester
Rotational Vickers Hardness Tester

FROM R&D TO AFTER-SALES SUPPORT

R&D and Prototyping

SUPPORTING clients who conduct R&D and prototyping activities by committing to carrying out research and collecting necessary data.
Manufacturing

Specializing in producing small-lot orders of 5 or less. we can reproduce the exact same springs that were exclusively made years ago thanks to our in-house production data. Therefore, our clients can completely rely on our reproducibility, short delivery time and product quality.
Replacing & Repairing

Ability to reproduce springs Even if there is no drawing.