0
EN
0
EN
VESPEL SP22
polyimide (PI) + graphite
Details »
Choice of sizes »
Group 39868
VESPEL SP22
polyimide (PI) + graphite
Details »
Choice of sizes »

Product features

VESPEL SP22: heat resistant plastic, contains 40% graphite.

Greyish black

product family features

Polyimides are high-performance plastics (HPM) designed to withstand extreme stresses, with special heat resistance and mechanical properties. Antistatic (ESD) and reinforced (glass fibre, carbon fibre, graphite and/or lubricant such as Teflon composite) versions are available in rod and sheet formats. For certain specific applications, it is possible to find the right variation developed for that purpose. Typically not from stock but can be supplied at short lead times. For certain extreme conditions there is no alternative, which is reflected in their price level. They have excellent machinability with high precision.

VESPEL SP22

Some important features

  • High strength over a wide temperature range
  • High stiffness and hardness
  • Good electrical insulation (for insulated versions)
  • Good tribological behaviour, especially in composite versions
  • Resistant to high-energy radiation (Gamma and X-rays)
  • Flame retardant (difficult to burn)
  • Excellent chemical resistance

Main areas of application

Valve seats, seals, insulators, other parts subject to mechanical stress at high temperatures. Composites for tribological purposes as self-lubricating material for high-speed sliding, also in vacuum. Electronic industry, various components for glass production. Potential material for engineering developments in the aerospace industry.

Machining technology

Chipping (turning, milling, drilling, sawing): carbide and diamond tools should be used. Cooling is recommended, with cutting speeds as follows: e.g. v = 250-500 m/min for turning and milling, v = 10-30 m/min for drilling.

Gluing: feasible.

Available formats

  • polyimide plate
  • polymide rods

Technical data

Downloadable technical data sheet »
Investigation
Unit of measurement
Value
Base properties
Basic colour
-
-
greyish black
Density
DIN EN ISO 1183
g/cm^3
1.65
Water absorption: saturation in air, 24 h / 96 h, (23ºC)
DIN EN ISO 62
%
0.14 / 0,42
Flammability rating according to UL94
DIN IEC 60695-11-10
-
V0
Mechanical properties
Tensile strength
DIN EN ISO 527-2
MPa
52
River crossing
DIN EN ISO 527-2
MPa
Tensile modulus of elasticity
DIN EN ISO 527-2
MPa
Elongation at break
DIN EN ISO 527-2
%
3,0
Compressive strength
EN ISO 604 1% / 2%
MPa
Flexural strength
DIN EN ISO 178
MPa
90
Charpy impact strength
DIN EN ISO 179-1eU
kJ/m2
Charpy impact strength, notched
DIN EN ISO 179-1eA
kJ/m2
Ball indentation hardness
ISO 2039-1
MPa
Shore D hardness
DIN EN ISO 868
-
Compressive strength
23°C, 2N/mm2, 1h
%
Compressive strength
80°C, 10N/mm2, 56h
%
Thermal properties
Melting point
ISO 11357-3
ºC
Glass transition temperature
DIN 53765
ºC
Thermal conductivity factor
ISO 22007-4:2008
W/ (K.m)
Forest heat
ISO 22007-4:2008
J/(g.K)
Coefficient of linear thermal expansion (CLTE): between 23 - 100ºC
DIN EN ISO 11359-1;2
m/(m.K)x10-5
3,8
Applicable max. temperature in air - short time
-
ºC
Applicable max. temperature in air - for prolonged use
-
ºC
Minimum temperature of applicability
-
ºC
Thermal stability (HDT)
DIN EN ISO 75, A
ºC
Chemical resistance
Chemical resistance at 23ºC: - weak acid
-
-
Chemical resistance at 23ºC: - strong acid
-
-
Chemical resistance at 23ºC: - weak alkali
ISO 11357-3
ºC
Chemical resistance at 23ºC: - strong alkali
-
-
Chemical resistance at 23ºC: - aromatic hydrocarbons
-
-
Chemical resistance at 23ºC: - alpha hydrocarbons
-
-
Chemical resistance at 23ºC: - chlorinated solvents
-
-
Chemical resistance at 23ºC: - alcohols
-
-
Electrical properties
Dielectric constant
IEC 60250
-
Dielectric loss factor (50 Hz)
IEC60 250
-
Volume resistance
IEC60093
Ω*cm
<10
Surface resistance
IEC60093
Ω
<10
Creep current strength, CTI
IEC 60112
-
Dielectric strength
IEC 60243
kV/mm
Optical properties
No value to display.
Sterilizability
No value to display.
Wear properties
No value to display.

(*) legend:

A - applicable
B - limited application
C - not applicable

Tables
Thickness
Colour
Table size (mm x mm)
Thickness tolerances: +0; +1
Mass: 1,34 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 2,67 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 4,01 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 5,34 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 6,68 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 8,02 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 9,35 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 10,69 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 12,02 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 13,36 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 14,69 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 16,03 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 17,37 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1
Mass: 18,70 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1.5
Mass: 20,04 kg/m
Table size: 254 x 254 mm
Thickness tolerances: +0; +1.5
Mass: 21,37 kg/m
Table size: 254 x 254 mm
Please contact us for the current availability of each size.
Rods
Diameter (mm)
Colour
Diameter tolerances: +0.0; +0.8
Mass: 0,01 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 0,05 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 0,12 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 0,21 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 0,33 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 0,47 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 0,64 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 0,84 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 1,06 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 1,31 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 1,58 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 1,88 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 2,21 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 2,56 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 2,94 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 3,34 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +0.8
Mass: 3,77 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +1.0
Mass: 4,23 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +1.0
Mass: 4,71 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +1.0
Mass: 5,22 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +1.0
Mass: 5,76 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +1.0
Mass: 6,32 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +1.0
Mass: 6,91 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +1.0
Mass: 7,52 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +1.0
Mass: 8,16 kg/m
Standard length: 965 mm
Diameter tolerances: +0.0; +1.0
Mass: 8,83 kg/m
Standard length: 965 mm
Please contact us for the current availability of each size.
Get in touch »