Helical Springs

Name: Helical Springs
SKU: 1361
Availability: InStock

Price range: $7.08 through $77.69

per 1″

Spring mandrel size (spring inner diameter) equal and bigger than 4.75mm is defined as Helical-spring

Request A Quote for bulk or custom orders.

See “Micro-Springs” listing for smaller mandrel sizes.

Wire Size(mm)

Mandrel Size

Pitch

Transition Temperature

Clear

Description
Additional information

Spring mandrel size (spring inner diameter) equal and bigger than 4.75mm is defined as Helical spring. Available mandrel sizes are 4.75mm, 6mm, 8mm, 9.5mm, 12.7mm, 16mm, 19mm, 22.2mm, 25.4mm. Available wire sizes are 0.15mm, 0.25mm, 0.4mm, 0.5mm, 0.75mm, 1mm, 1.25mm, 1.5mm, 2mm, 3mm, and 5mm.

The listing price is for per inch. If multiple units are ordered, a continuous length will be sent out unless otherwise stated in the comments box.

For smaller helical springs, please check “Micro Springs” listings.

For special designs or sizes, please feel free to contact us: nitinol@kelloggsresearchlabs.com.

We are also capable of creating two-way helical springs and other nitinol components. These are difficult to create, thus cost more. Please Request a Quote. To see a simple demonstration of two-way, please view this video showing how a spring can move depending on the temperature.

Transition Temperature
Tag	Transition Temperature(°C/°F)	Effect
SuperElastic	0	Austenitic at room temperature
Air Temp	20/70	Martensitic in a cool environment(freezer, ice water…) and change to set shape when brought to room temp.
Body Temp	35/95	Martensitic in a cool environment(freezer, ice water…) and change to set shape when held in hands.
Standard Temp	45/115	Martensitic at room temperature and change to set shape when heat to 45°C and above.
High Temp	80/180	Martensitic at elevated temperatures and change to set shape when heat to 80°C and above.
		Note: Heat can be generated electrically.

Pitch

Pitch is the distance between the center of two consecutive wraps of wire.

Mandrel Size

This determines the inside diameter of the spring.

Wire Size(mm)	0.15, 0.25, 0.4, 0.5, 0.75, 1, 1.25, 1.5, 2, 3, 5
Mandrel Size	4.75mm, 6mm, 8mm, 9.5mm, 12.7mm, 14.2mm, 16mm, 19mm, 22.2mm, 25.4mm
Pitch	Tight, wire size x 2, wire size x3, wire size x4
Transition Temperature	-15°C (5°F), 20°C (68°F), 35°C (95°F), 45°C (113°F), 80°C (176°F)