Stainless Steel Filled PTFE has enhanced mechanical properties by the use of a 50% by weight (or 15% by volume) stainless steel powder filling.

The material is extremely hard wearing, has excellent strength and stability under extreme loads and elevated temperatures whilst still retaining the low coefficient of friction of conventional PTFE. It is an extremely versatile product and can be used on Steam and Thermal Fluid applications.

It is also an extremely good seat material for use in V-Ball type Flow Control Ball Valve applications due to its high resistance to wear. 

STRENGTHS

Extremely hard wearing
Excellent under extreme loads
Excellent under extreme temperatures
Lowers creep, cold flow and wear
Increased thermal and electrical conductivity

WEAKNESSES

Very heavy
TYPICAL PHYSICAL PROPERTIES OF STAINLESS STEEL FILLED PTFE
Property Test Method Typical Values
Specific Gravity ASTM D 4894 3.35 g/cm3
Tensile Strength ASTM D 4894 Min 22 MPa
Elongation ASTM D 4894 Min 220%
Shore D Hardness Needle 65 - 69
Datasheet: Stainless Steel Filled PTFE
AF616 Stainless Steel Filled PTFE 252kb

The addition of Stainless Steel to PTFE gives better dimensional stability and lowers creep, cold flow and wear. It increases hardness and compressive strength whilst also increasing thermal and electrical conductivity.

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