Tin Bronze Valve Bellows
Tin Bronze Valve Bellows Manufacturer | QSn6.5-0.1 Bellows
JK Bellows manufactures tin bronze valve bellows primarily from QSn6.5-0.1 phosphor bronze for pressure regulating valves, valve control assemblies, and flexible sealing applications. As part of our precision metal bellows range, these tin bronze bellows provide elastic axial movement and pressure-responsive mechanical performance for industrial valves and OEM equipment.
Our precision tin bronze bellows are manufactured using hydroforming technology and are available in different dimensions, wall structures, convolution designs, and end configurations. JK Bellows also supplies custom bronze valve bellows based on customer drawings, operating pressure, valve stroke, sealing requirements, and installation dimensions.
Tin Bronze Valve Bellows Technical Specifications
Parameter
Specification
Product Type
Precision Tin Bronze Valve Bellows
Primary Material
QSn6.5-0.1 Phosphor Bronze
International Material Reference
CuSn6 / UNS C51900 (approximate equivalent)
Manufacturing Process
Hydroforming
Inner Diameter
10–70 mm
Wall Thickness
0.1–2.0 mm (published range across different constructions)
Effective Stroke
2–40 mm
Working Pressure
Vacuum to 25 MPa (design-dependent)
Operating Temperature
-60°C to +100°C
Elastic Modulus
9,000–10,000 kgf/mm² (published material reference)
Outer Diameter
According to product drawing
Free Length
Customizable
Convolution Geometry
Custom number, pitch, and profile
Wall Construction
Single-layer or multi-layer designs
End Connections
Open ends, closed ends, and custom interfaces
Spring Rate
According to the selected bellows design
Material Documentation
Material Test Certificate; EN 10204 3.1 upon agreed specification
Customization
Dimensions, stroke, convolution structure, and end connections
JK Bellows supplies QSn6.5-0.1 tin bronze valve bellows with different dimensional and mechanical specifications. Our published product range includes the following specifications for valve control and sealing applications.
The specifications cover different tin bronze valve bellows designs. Working pressure, effective stroke, spring rate, and service life vary with bellows geometry, wall construction, and operating conditions. The published pressure range extends to 25 MPa for suitable designs rather than every specification. JK Bellows also manufactures custom tin bronze bellows for customer-specific valve assemblies.
QSn6.5-0.1 Tin Bronze Material and Product Features
Product Feature
Benefit for Valve Applications
QSn6.5-0.1 Phosphor Bronze
Provides elastic properties and formability for precision valve bellows components.
Hydroformed Corrugated Structure
Produces the convolution geometry required for axial movement and mechanical response.
Flexible Axial Movement
Accommodates specified compression and extension in valve control assemblies.
Pressure-Responsive Design
Supports mechanical sensing and actuation in pressure regulating equipment.
Custom End Connections
Allows integration with valve stems, mounting interfaces, and other components.
Custom Convolution Geometry
Supports specified spring rate, axial stroke, and installation dimensions.
QSn6.5-0.1 is a copper-tin-phosphorus alloy containing approximately 6–7% tin with a small phosphorus addition. It is commonly referenced alongside CuSn6 and UNS C51900 in international material comparisons. Its strength, elastic properties, and formability make it suitable for precision corrugated metal components.
Our QSn6.5-0.1 tin bronze bellows combine the mechanical properties of phosphor bronze with thin-walled corrugated structures. They are used in valve assemblies requiring elastic movement, pressure response, or flexible sealing.
For valve assemblies requiring a different copper alloy, JK Bellows also manufactures H80 Brass Bellows. Material selection should consider the working medium, temperature, pressure, and mechanical requirements.
