Pala hitting surface: reading the spec sheet of a carbon model

Our session today is titled “Pala hitting surface: reading the spec sheet of a carbon model,” and it will follow the plan announced here. Decode a pala spec sheet to separate information from slogans.

The core of the method under the microscope

Keep this fundamental rule in mind: Toray presents standard modulus as the most economical category of carbon fiber in its range.

Keep this fundamental rule in mind: a carbon fiber is a filament about 5 to 10 micrometers in diameter, made up mostly of carbon atoms, with high stiffness and high tensile strength relative to its weight. Hold on to this rule for the parts to come.

Keep this fundamental rule in mind: T700G is a variant of T700S with reinforced fiber-resin adhesion; Toray intends it notably for aerospace and sporting goods. Come back to this idea whenever a doubt arises.

The essential terms

This section puts the terms in order, definition after definition.

Shaft

The part of a badminton racket that connects the handle to the head.

To make the notion tangible, the Laws of Badminton name the shaft among the components of the racket.

To clarify this term, open the entry Shaft.

Intermediate-modulus fiber

A category of carbon fibers that are stiffer than standard-modulus fibers but less stiff than high-modulus ones.

To make the notion tangible, Toray's page on standard, intermediate, and high modulus fibers lets you compare these categories.

A fuller definition awaits you in the entry Intermediate-modulus fiber.

Stringed area

The zone of a badminton racket occupied by the strings, intended for striking the shuttlecock.

Let us take this case to fix ideas: the Laws of Badminton specify that the strings form a bounded surface within the head of the racket.

For the complete definition, see the entry Stringed area.

How to proceed

One practice to recommend: the home page of the International Padel Federation (FIP) does not detail the permitted dimensions or materials of palas; these requirements are found in its regulatory documents, which you should consult directly.

How to check that it works

I suggest this reading grid to guide your decision.

• At Toray, standard-modulus fibers have a modulus of about 33-34 MSi or slightly higher; this family includes T300, T700S, and T700G.
• Toray's M series (M35J to M60J) covers moduli from 49.8 to 85.3 MSi (343 to 588 GPa): T700, at 33.4-34.8 MSi, therefore sits in the lower part of the stiffness scale of Toray carbon fibers.
• Toray T700S carbon fiber has a tensile strength of 711 ksi, or 4,900 MPa.
• The tensile modulus of T700S fiber is 33.4 MSi, or 230 GPa.

Points to watch

A trap awaits at this stage — a standard-modulus fiber is not the stiffest: intermediate-modulus (42 MSi) and high-modulus (up to 85.3 MSi) fibers exist, so “T700” is not synonymous with maximum stiffness.

Which lines of the sheet matter?

Let us look at what happens here: T300 is Toray's reference fiber, used in aerospace for more than 20 years; T700 belongs to the same standard-modulus family.

Among the points of comparison, this one — Toray classes T700G, the version with reinforced fiber-resin adhesion, among the fibers intended for sporting goods: a T700 grade can therefore exist in several variants (T700S, T700G) with different uses. Weigh this point according to your personal priorities.

Finishing in practice

Note your questions as you read, then check them against the corresponding sections.

Questions and answers

Is T700 an intermediate-modulus fiber?

No: Toray presents T700S as a standard-modulus fiber.

Related reading

• T700 carbon: what this designation really means — Definition, properties, and a comparison of T700 with other fiber grades. The reading plan announced here: what organizes the subject.
• T700S, standard modulus and intermediate modulus: reading the difference — Place T700S relative to the intermediate or high modulus fibers from the same manufacturer. In these pages, you will go through: the basic vocabulary.
• T700 carbon: what this designation really refers to — Learn that T700 is a fiber grade made by a manufacturer, not a racket label. Use this tabular summary to compare the options.
• T700 carbon badminton racket: what you need to know — T700 in badminton rackets and the BWF rules. Across these pages, you will move through the reading plan, starting with what organizes the subject.

Sources cited

• Fibres de carbone à module standard, intermédiaire et élevé (Toray) — Presents T700S and T700G: T700G offers a higher modulus and adhesion and targets aerospace and high-end sporting goods. Text consulted as of 2026-10-13.
• Carbon fibers, Wikipédia —
• Familles de fibres de carbone TORAYCA — Place of T700 among the standard-modulus (T300, T700), intermediate-modulus (T800, T1000, T1100), and high-modulus (M series) ranges. Text consulted as of 2026-10-13.
• Fédération Internationale de Padel — Website of the international padel federation: regulations, competitions, and news. Text consulted as of 2026-10-13.
• T700S, fibre de carbone standard (Toray Composite Materials America) — Characteristics of T700S fiber: tensile strength 4,900 MPa, modulus 230 GPa, 6K, 12K, and 24K formats. Text consulted as of 2026-10-13.

Sources and verification

• This text draws on 5 sources: 1 official body or institution and 3 manufacturer documentations.
• Facts checked against their sources on October 13, 2026.
• How sources are chosen and verified: Fact checking.