GEHR PA® 6.6

Chemical Family: Polyamides

GEHR PA® 6.6 is slightly increased surface hardness and rigidity of PA 6.6 is due to the reduced moisture absorption behavior compared to PA 6 XT. Abrasion resistance and heat deflection temperature could also be optimized at the expense of toughness.

Properties

Physical Form: Custom, Rods, Sheets
Custom
Rods
Sheets

Other characteristics

Brand: GEHR PA
Color: Black
Density: 1110.0 - 1140.0 kg/m³
Features: Abrasion Resistant, Chemical Resistant, Dimensional Stability, Excellent Surface Hardness, Good Impact Strength, Good Rigidity, Good Sliding Properties, High Heat Deflection Temperature, High Stiffness, High Strength, Humidity Resistant, Low Moisture Absorption, Shock Absorbent
Polymer Name: Polyamide 66 (PA 66)
Odor: Odorless
Markets: Automotive & Transportation
Building & Construction
Electrical & Electronics
Industrial
Storage: The products shall be stored indoor to keep away from any source of degradation such as sunlight, UV-jets, ionizing radiation, chemicals.
Machining: The product can be machined with standard machinery and tools. Before machining the product should be stored at room temperature 24 h. Evacuate swarf to prevent slipping or tripping. Observe the maximum allowable concentration of dust levels on the working area which apply in your country. Wear safety goggles during machining. General dust limit value: Respirable dust (6 mg/m3); Inhalable dust (10 mg/m3).
Properties: High strength and stiffness; High impact and notch impact strength; High heat deflection temperature; Shock-absorbing properties; Good sliding and dry running operating features; Good chemical stability against organic solvents and fuels; Size alteration by humidity absorption must be considered; Dimension stability, electrical and mechanical properties may become affected by water absorption
Flame Rating: UL 94 HB
Insoluble In: Water
Technology: Plastics
Safety Measures: The general industrial safety measures should be considered. A thermal damage during machining should be avoided.
Product Families: Plastics — Parts, Shapes & Films
Form and Condition: Rods. Sheets / Solid
Material Features: Abrasion Resistant
Chemical Resistant
Dimensional Stability
Excellent Surface Hardness
Good Impact Strength
Good Rigidity
Good Sliding Properties
High Heat Deflection Temperature
Certifications and Compliance: UL 94

Technical data

Table 1 of 6

8 rows

Characteristic	Value	Unit	Method
Tensile Strength at Yield	80	MPa	ISO 527
Elongation at Yield (S)	7	%	ISO 527
Elongation at Break (R)	min. 70	%	ISO 527
Impact Strength (an)	No break	kJ/m2	ISO 179
Ball Indentation (Rockwell Hardness)	170	MPa	ISO 2039
Hardness	83	Shore D	ISO 868
Flexural Strength (B 3,5 %)	110	MPa	ISO 178
Modulus of elasticity (Et)	3470	MPa	ISO 527

Table 2 of 6

5 rows

Characteristic	Value	Unit	Method
Specific Gravity	1.14	—	ISO 1183
Water Absorption	8.5	%	ISO 62
Humidity Absorption	2.6	%	ISO 62
Maximum Permissible Service Temperature	100	°C	UL746B
Lower Permissible Service Temperature	-30	°C	UL746B

Table 3 of 6

6 rows

Characteristic	Value	Unit	Method
Heat Deflection Temperature (HDT/B)	200	°C	ISO 75
Heat Deflection Temperature (HDT/A)	100	°C	ISO 75
Coefficient of Linear Thermal Expansion	1.1	K-1.10-4	ISO 11359
Thermal Conductivity (20°C)	0.35	W/(m.K)	ISO 22007-4
Glass Transition Temperature (Tg)	47	°C	ISO 3146
Melting Temperature (Tm)	260	°C	ISO 3146

Table 4 of 6

4 rows

Characteristic	Value	Unit
Density	1.11 - 1.14	g/cm³
Melting Temperature	min. 220	°C
Thermal Decomposition	min. 300	°C
Ignition Temperature	min. 400	°C

Table 5 of 6