ELASTOSIL® M 4470

$ELASTOSIL<sup>®</sup> M 4470

Pourable, condensation-curing, two-component silicone rubber that vulcanizes at room temperature.

 

Main application: Making molds for casting of low melting metal alloys.



Properties

  • Good flowability and self-deaeration
  • High Shore A hardness (approx. 60)
  • Outstanding resistance to common casting resins
  • Low viscosity

Specific features of ELASTOSIL® M 4470

  • Condensation-curing
  • Heat resistant
  • Low viscosity
  • Two-component

Disclaimer

All the information provided is in accordance with the present state of our knowledge. Nonetheless, we disclaim any warranty or liability whatsoever and reserve the right, at any time, to effect technical alterations. The information provided, as well as the product's fitness for an intended application, should be checked by the buyer in preliminary trials. Contractual terms and conditions always take precedence. This disclaimer of warranty and liability also applies particularly in foreign countries with respect to third parties' rights.

ELASTOSIL® M 4470 is particularly suitable for molding applications in which high elongation and tear strength can be sacrificed in favor of excellent deformation resistance and thermal stability, e. g., for making molds of models of models with nor or only minor undercuts if good heat dissipation and high rigidity are required.


Typical applications are molds with

  • high rigidity for foaming resins (for foaming polyurethanes, it is advisable to use a barrier coat!)
  • high swelling resistance to components of casting resins, such as styrene in the case of polyesters
  • high thermal stability and heat dissipation for casting low-melting metal alloys

ELASTOSIL® M 4470 is cured by adding Catalyst T37 for long pot lives and curing times, or Catalyst T40 for short pot lives and curing times.


Thin-walled molds are best suited for casting low-melting metal alloys (melting point: 300 °C max.) and should be placed on a sheet of aluminum or other material with high thermal conductivity. Before the casting process, the old should be post-cured for a few hours at about 150 °C. In order to improve wetting by the molten metal, a thin layer of extremely fine silicon carbide, graphite powder or acetylene black should be applied to the mold surface.
The first castings have normally to be discarded since the rubber still emits gases, giving the surface of the casting a pockmarked appearance.
The pot life is the period of time at 23 °C / 50 % rel. humidity during which the catalyzed mix to attain a viscosity of 100,000 mPa s and still be just pourable

 

Please check also our brochures and info sheets.

Storage

The 'Best use before end' date of each batch is shown on the product label.


Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

Sales and support

Wacker Chemical Corporation
3301 Sutton Road
Adrian, MI 49221-9397
United States
+1  888  922-5374 (Phone)
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Products Technical data
Color Density Elongation at break Hardness Shore A Linear shrinkage Pot life Tear strength Tensile strength Viscosity, dynamic
CENUSIL® M 810 A/B white white 1.05 g/cm³[1] 8.763 lb/gal[1] 600 %[22] 600 %[22] 10[18] 10[18] - - - - - - 3.5 N/mm²[21] 3.5 N/mm²[21] 3000 mPa·s[7] 3000 mPa·s[7]
CENUSIL® M 820 A/B white white 1.05 g/cm³[2] - 500 %[22] 500 %[22] 20[18] 20[18] - - - - - 4 N/mm²[21] 4 N/mm²[21] 6000 mPa·s[8] -
CENUSIL® M 825 A/B white white 1.05 g/cm³[1] 8.763 lb/gal[1] 450 %[22] 450 %[22] 25[18] 25[18] - - - - - - 5 N/mm²[21] 5 N/mm²[21] 8000 mPa·s[9] -
CENUSIL® M 830 A/B translucent translucent 1.05 g/cm³[1] 8.763 lb/gal[1] 500 %[22] 500 %[22] 26[18] 26[18] - - - - - - 5 N/mm²[21] 5 N/mm²[21] 8000 mPa·s[9] -
ELASTOSIL® M 1470 light gray light gray 1.28 g/cm³[3] - 230 %[22] 230 %[22] 45[18] 45[18] 0.2 % 0.2 % - - - - 4.5 N/mm²[21] 4.5 N/mm²[21] - -
ELASTOSIL® M 4115 A/B translucent translucent 1.05 g/cm³[1] 8.763 lb/gal[1] 400 %[22] 400 %[22] 17[18] 17[18] - - - - - - 3 N/mm²[21] 3 N/mm²[21] 2500 mPa·s[9] -
ELASTOSIL® M 4119 A/B tranlucend tranlucend 1.05 g/cm³ - > 400 %[22] > 400 %[22] 20 - - - - - - - 3.5 N/mm²[21] 3.5 N/mm²[21] 3000 mPa·s[7] 3000 mPa·s[7]
ELASTOSIL® M 4370 A/B reddish brown reddish brown 1.5 g/cm³[4] - 130 %[22] 130 %[22] 55[19] - < 0.1 %[23] - - - - - 3.0 N/mm²[21] 3.0 N/mm²[21] 350 mPa·s[10] -
ELASTOSIL® M 4400 pale yellow pale yellow 1.3 g/cm³[3] - 250 %[22] 250 %[22] 23[18] 23[18] 0.7 %[24] - - - - - 2 N/mm²[21] 2 N/mm²[21] 30000 mPa·s[11] -
ELASTOSIL® M 4440 white white 1.23 g/cm³[3] - 220 %[22] 220 %[22] 37[18] 37[18] 0.4 % 0.4 % - - - - 2.5 N/mm²[21] 2.5 N/mm²[21] 25000 mPa·s[11] -
ELASTOSIL® M 4470 reddish brown reddish brown 1.44 g/cm³[3] - 120 %[22] 120 %[22] 60[18] 60[18] 0.8 % 0.8 % - - - - 4.5 N/mm²[21] 4.5 N/mm²[21] 15000 mPa·s[12] -
ELASTOSIL® M 4503 white white 1.2 g/cm³[5] - 350 %[22] 350 %[22] 25[19] - 0.5 %[25] - - - - - - 40000 mPa·s[13] -
ELASTOSIL® M 4511 white white 1.22 g/cm³[3] - 600 %[22] 600 %[22] 12[18] 12[18] < 0.4 % < 0.4 % - - - - 3.5 N/mm²[21] 3.5 N/mm²[21] 25000 mPa·s[11] -
ELASTOSIL® M 4512 white white 1.19 g/cm³[3] - 500 %[22] 500 %[22] 20[18] 20[18] < 0.4 % < 0.4 % - - - - 3.5 N/mm²[21] 3.5 N/mm²[21] 30000 mPa·s[11] -
ELASTOSIL® M 4514 white white 1.25 g/cm³[3] - 450 %[22] 450 %[22] 25[19] - < 0.4 % < 0.4 % - - - - 4.5 N/mm²[21] 4.5 N/mm²[21] 35000 mPa·s[14] -
ELASTOSIL® M 4541 white white 1.16 g/cm³[3] - 400 %[22] 400 %[22] 32[18] 32[18] < 0.4 % < 0.4 % - - - - 5 N/mm²[21] 5 N/mm²[21] 40000 mPa·s[12] -
ELASTOSIL® M 4600 A/B translucent translucent 1.10 g/cm³[4] - 800 %[22] 800 %[22] 20[18] 20[18] < 0.1 % < 0.1 % 90 min 90 min - - 7[21] 7[21] 20000 mPa·s[12] -
ELASTOSIL® M 4601 A/B white white 1.14 g/cm³[4] - 700 %[22] 700 %[22] 28[18] 28[18] < 0.1 % < 0.1 % - - - - 6.5 N/mm²[21] 6.5 N/mm²[21] 15000 mPa·s[12] -
ELASTOSIL® M 4642 A/B beige beige 1.15 g/cm³[4] - 480 %[22] 480 %[22] 37[18] 37[18] < 0.1 % < 0.1 % - - - - 7 N/mm²[21] 7 N/mm²[21] 20000 mPa·s[12] -
ELASTOSIL® M 4643 A/B white white 1.37 g/cm³[4] - 300 %[22] 300 %[22] 48[18] 48[18] < 0.1 % < 0.1 % - - - - 5 N/mm²[21] 5 N/mm²[21] 40000 mPa·s[12] -
ELASTOSIL® M 4670 A/B beige beige 1.32 g/cm³[4] - 250 %[22] 250 %[22] 55[18] 55[18] < 0.1 % < 0.1 % - - - - 5.5 N/mm²[21] 5.5 N/mm²[21] 120000 mPa·s[12] -
ELASTOSIL® RT 480 light gray light gray 1.2 g/cm³[3] - 170 %[22] 170 %[22] 55[18] 55[18] - - - - - - 4.5 N/mm²[21] 4.5 N/mm²[21] 300000 - 400000 mPa·s[15] -
ELASTOSIL® RT 625 A/B translucent translucent 1.10 g/cm³[4] - 600 %[22] 600 %[22] 25[18] 25[18] < 0.1 % < 0.1 % - - - - 6.5 N/mm²[21] 6.5 N/mm²[21] 25000 mPa·s[12] -
ELASTOSIL® RT 646 A/B beige beige 1.3 g/cm³ - 280 %[22] 280 %[22] 53[20] - - - - - - - 5 N/mm²[21] 5 N/mm²[21] 110000 mPa·s[9] -
ELASTOSIL® RT K light gray light gray 1.22 g/cm³[3] - 130 %[22] 130 %[22] 45[18] 45[18] 0.3 %[26] - - - - - 2 N/mm²[21] 2 N/mm²[21] - -
ELASTOSIL® VARIO 15 Translucent Translucent 1.06 g/cm³[2] - 900 %[22] 900 %[22] 15[18] 15[18] - - - - - - 6.5 N/mm²[21] 6.5 N/mm²[21] 5.000 mPa·s[16] -
ELASTOSIL® VARIO 40 Translucent Translucent 1.15 g/cm³[6] - 450 %[22] 450 %[22] 40[18] 40[18] - - - - - - 8[21] 8[21] 15.000 mPa·s[17] -
Legend
[1] Density | 23 °C | ISO 2811,  [2] Density 23°C | ISO 2811,  [3] Density in water | 23 °C | ISO 2781,  [4] Density | 23 °C ,  [5] Density | 23 °C | ISO 2781,  [6] Density 23° C | ISO 2811,  [7] Viscosity, dynamic | Brookfield,  [8] Viscosity, dynamic 23°C | ISO 3219,  [9] Viscosity, dynamic | 23 °C | ISO 3219,  [10] Viscosity, dynamic after stirring | 23 °C ,  [11] Viscosity, dynamic after stirring | 23 °C | DIN EN ISO 3219,  [12] Viscosity, dynamic after stirring | 23 °C | ISO 3219,  [13] Viscosity, dynamic after stirring | 23.0 °C | ISO 3219,  [14] Viscosity, dynamic (after stirring) | 23 °C | ISO 3219,  [15] Viscosity, dynamic | 23 °C | Brookfield,  [16] Viscosity, dynamic 23°C, stirred | ISO 3219,  [17] Viscosity, dynamic 23° C, stirred | ISO 3219,  [18] Hardness Shore A | ISO 868,  [19] Hardness Shore A | ISO 7619-1,  [20] Hardness Shore A | DIN 53 505 / ISO 868,  [21] Tensile strength | ISO 37,  [22] Elongation at break | ISO 37,  [23] Linear shrinkage (after 24 h at 23°C),  [24] Linear shrinkage T 37 | 3 % ,  [25] Linear shrinkage at 23°C,  [26] Linear shrinkage (cured for 7 d / 23 °C) | 2% Catalyst T  

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