June 2005Ultramid® A3WG5

(PA66-GF25)

Product description

Glass fibre reinforced and heat aging resistance injection moulding grade for machinery components

and housings of high stiffness and dimensional stability such as coil formers and bearing cages.

A3EG5 and A3HG5 are the preferred grades for producing electrically insulating parts.

Physical form and storage

Ultramid is supplied dry and ready to use in moisture-proof packaging in the form of cylindrical or flat

pellets. Its bulk density is about 0,7g/cm³. Standard packs are the special 25kg bag and the 1000kg

bulk container (octagonal IBC= intermediate bulk container made from corrugated board with a liner

bag). Subject to agreement other forms of packaging and shipment in tankers by road or rail are also

possible. All containers are tightly sealed and should be opened only immediately prior to

processing. To ensure that the perfectly dry material delivered cannot absorb moisture from the air

the containers must be stored in dry rooms and always carefully sealed again after portions of

material have been withdrawn. Ultramid can be kept indefinitely in the undamaged bags. Experience

has shown that product supplied in IBCs can be stored for about 3 months without any adverse

effects on processing properties due to moisture absorption. Containers stored in cold rooms should

be allowed to equilibrate to normal temperature so that no condensation forms on the pellets. Product safety

Ultramid melts are thermally stable at the usual temperature for A, B and C up to 310°C and 350°C

for T and do not give rise to hazards due to molecular degradation or the evolutionon of gases and

vapors. Like all thermoplastic polymers Ultramid decomposes on exposure to excessive thermal

load, e.g. when it is overheated or as a result of cleaning by burning off. In such cases gaseous

decomposition products are formed. Decomposition accelerates above 310°C (T >350°C)

approximately, the initial products formed being mainly carbon monoxide and ammonia, and

caprolactam too in the case of Ultramid B. At temperatures above about 350°C (T>400°C) small

quantities of pungent smelling vapors of aldehydes, amines and other nitrogenous decomposition

products are also formed.

Further safety information see safety data sheet of the individual product.

Note

The information submitted in this publication is based on our current knowledge and experience. In

view of the many factors that may affect processing and application, these data do not relieve

processors of the responsibility of carrying out their own tests and experiments; neither do they imply

any legally binding assurance of certain properties or of suitability for a specific purpose. It is the

responsibility of those to whom we supply our products to ensure that any proprietary rights and

existing laws and legislation are observed. In order to check the availability of products please

contact us or our sales agency.

BASF Aktiengesellschaft

67056 Ludwigshafen, Germany

BASF Aktiengesellschaft

67056 Ludwigshafen, Germany

Ultramid ®

A3WG5

Typical values at 23°C 1) Test method Unit

Condition Values

Properties

Abbreviated term ISO 1043 - - PA66-GF25

Density

ISO 1183 g/cm 3

- 1.32 Viscosity number (solution 0.005 g/ml sulfuric acid) ISO 307 ml/g - 145

Colour: natural (n), coloured (c), black (bk) - - - n,bk Water absorption, equilibrium in water at 23°C ISO 62 % - 5.70 - 6.30 Moisture absorption, equilibrium 23°C/50% r.h. ISO 62 % - 1.70 - 2.10

Processing

Melting temperature, DSC ISO 3146 °C - 260

Melt volume rate MVR 275/5

ISO 1133 cm 3

/10 min - 50

Melt temperature, injection moulding/extrusion - °C - 280 - 300 Mould temperature, injection moulding

- °C - 80 - 90 Moulding shrinkage, constrained 6)

- % - 0.55 Flammability

UL94 rating at 1.6 mm thickness

UL 94 class - HB Automotive materials (thickness d ≥ 1mm) FMVSS 302

- - + Mechanical properties

Tensile modulus

ISO 527-2 MPa dry/cond. 8600/6500 Yield stress (v = 50 mm/min), Stress at break (v = 5 mm/min)* ISO 527-2 MPa dry/cond. 180*/120*

Yield strain (v = 50 mm/min)

ISO 527-2 % dry/cond. Nominal strain at break, Strain at break*

ISO 527-2 % dry/cond. 3.0*/6.0* Tensile creep modulus, 1000 h, strain ≤ 0.5%, +23°C ISO 9-1 MPa cond. 4400 Flexural modulus ISO 178 MPa dry/cond. 7600/6000 Flexural strength

ISO 178 MPa dry/cond.

260/200

Charpy unnotched impact strength 3)

+23°C ISO 179/1eU kJ/m 2

dry/cond.

65/90 Charpy unnotched impact strength -30°C

ISO 179/1eU kJ/m 2

dry

55 Charpy notched impact strength 3)

+23°C ISO 179/1eA kJ/m 2

dry/cond.

12.0/18.0 Charpy notched impact strength -30°C

ISO 179/1eA kJ/m 2

dry

9.0 Izod notched impact strength 1A 3)

+23°C ISO 180/1A kJ/m 2

dry/cond.

9.5/15.0

Izod notched impact strength 1A -30°C ISO 180/1A kJ/m 2

dry Ball indentation hardness H 358/30, H 961/30* ISO 2039-1

MPa dry/cond. 230*/180*

Thermal properties

Deflection temperature 1.8 MPa (HDT A) ISO 75-2 °C - 245

Deflection temperature 0.45 MPa (HDT B)

ISO 75-2 °C - 250

Max. service temperature (short cycle operation) 2)

- °C - 240 Temperature index at 50% loss of tensile strength after 20000 h / 5000 h IEC 216-1 °C - 145 / 175

Thermal coefficient of linear expansion, longitudinal / transverse (23-80)°C DIN 53752 10-4

/K

- 0.25 - 0.35 / 0.6 - 0.7Thermal conductivity DIN 52 612 W(m · K) - 0.34

Specific heat capacity - J(kg · K) - 1600.00 Electrical properties Dielectric constant at 1 MHz IEC 60250 - dry/cond. 3.5/5.5 Dissipation factor at 1 MHz IEC 60250 10-4

dry/cond. 140/3000

Volume resistivity IEC 60093 Ω · m dry/cond. 1013/1010

Surface resistivity IEC 60093 Ω dry/cond. 1012/1010

CTI, solution A

IEC 60112

- cond. 450

Footnotes:

1) for uncoloured product, unless defined otherwise in the product name

2) Empirical values determined on articles repeatedly subjected to the temperature concerned for several hours at a time over a period of several years. The proviso is that the articles were properly designed and processed according to our recommendations. 3) N = no break.

6) Test box with central gating, dimensions of base (107·47·1,5) mm,

processing conditions: T M PA6 = 260 °C, T M PA66 = 290 °C, mould surface temp. MST = 60 °C for unreinforced, MST = 80 °C for reinforced.下载本文