Airbags Inflators and Components

Automotive

Axles
Airbag Inflators and Components
Transmission Parts
Other Applications



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The component centers located in Mexico and Romania, specially dedicated to global airbag manufacturers, can perform cutting, cold forming and machining operations such as turning, drilling and milling

Dedicated component centers PERFORM added-value operations

Tenaris manufactures a wide range of seamless cold-drawn tubes and components for driver, passenger, side and curtain airbag inflators.

The tubes used for airbag manufacturing are subjected to the strictest standards of quality control and must meet the most demanding dimensional and functional requirements. Their critical factors are clean steelmaking, mechanical characteristics and very close tolerance in terms of thickness and eccentricity. When an inflator deploys, the tubes undergo high stresses at an extremely elevated strain rate. We have developed carbon low-alloy steels which guarantee high-strength properties combined with excellent resistance both to burst and impact toughness even at low (-40°C) temperatures.

We supply tubes suitable for hot, cold or warm forming. In our automotive component centers, we can perform cutting, cold forming and machining operations such as turning, drilling and milling for global airbag manufacturers.

Tubes for Hybrid Inflators

Hybrid inflators combine a small explosive charge with the presence of a cold pressurized gas. We provide passenger, side and curtain hybrid inflator vessels which are manufactured by cold forming processes and subsequent machining operations.

Manufacturing process

Cold-drawn

Steel grades

Special steel grades designed to meet each customer’s needs

Size range

Outer diameter 25--65 mm
Wall thickness 2--4 mm

Mechanical properties

Minimum tensile strength

Low grade 100 Ksi (690 Mpa)
Medium grade 135 Ksi (930 Mpa)
UHSS grade 145 Ksi (1000 Mpa)
MHSS grade 160 Ksi (1100 Mpa)

Delivery conditions

Heat-treated (proprietary heat treatments)

Standards

100% DOT compliance

Special requirements

Ductile behaviour in burst tests even at -60º C

Tubes for Pyrotechnic Inflators

Pyrotechnic inflators, which use a gas produced by the rapid combustion of a special solid propellant to inflate the cushion, usually require perforated tubes containing an explosive device and a cartridge of solid propellant. We supply a wide range of driver and passenger pyrotechnic inflator tubes manufactured according to each customer's design.

Manufacturing process

Cold-drawn

Steel grades

Special steel grades designed to respond to each customer’s needs

Size range

Outer diameter 25--75 mm
Wall thickness 2--5 mm

Mechanical properties

Minimum tensile strength Low grade 52 Ksi (360 Mpa)
Medium grade 86 Ksi (580 Mpa)
High grade 100 Ksi (690 Mpa)

Delivery conditions

As drawn, stress-relieved, normalized